Major v. R.J. Reynolds Tobacco Co. ( 2017 )


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  • Filed 8/30/17
    CERTIFIED FOR PUBLICATION
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SECOND APPELLATE DISTRICT
    DIVISION EIGHT
    TAJIE MAJOR.,                                    B260355 c/w B265671
    Plaintiff and Appellant,                  (Los Angeles County
    Super. Ct. No. BC473650)
    v.
    R.J. REYNOLDS TOBACCO COMPANY,
    Defendant and Appellant.
    APPEAL from a judgment of the Superior Court of Los
    Angeles County. Amy D. Hogue, Judge. Affirmed.
    Jones Day, Steven N. Geise, Gregory G. Katsas and
    Charles R.A. Morse for Defendant and Appellant.
    Brayton Purcell, Gilbert L. Purcell, Richard M. Grant and
    Jason M. Rose for Plaintiff and Appellant.
    __________________________
    William E. Major smoked two packs of cigarettes a day, on
    average, from 1961 to 1989. He was diagnosed with lung cancer
    in 1997, and died a year later. His wife, plaintiff Tajie Major,
    brought suit against several manufacturers of cigarettes Major
    had smoked, as well as manufacturers of asbestos to which he
    had been exposed, alleging that Major’s smoking and his asbestos
    exposure caused his lung cancer and death.1 All defendants but
    one settled, and plaintiff proceeded to trial against only Lorillard
    Tobacco Company, the manufacturer of Kent and Newport
    cigarettes.2 After trial, the jury concluded that Lorillard’s
    cigarettes were defectively designed, and that their design was a
    substantial factor in causing Major’s death. In allocating
    responsibility for plaintiff’s damages, the jury determined Major
    was 50 percent liable, Lorillard was 17 percent liable, other
    cigarette manufacturers were 33 percent liable, and asbestos
    exposure was not a substantial factor. After making appropriate
    allowances for comparative negligence and settlements, judgment
    was entered against Lorillard for an amount in excess of $3.75
    million, plus costs and interest.
    1     We refer to the decedent as “Major,” and his wife as
    “plaintiff” or “Mrs. Major.” Some witnesses referred to Major as
    “Captain Major” reflecting his Navy rank.
    2      Lorillard has since been acquired by R.J. Reynolds Tobacco
    Company, which was one of the original defendants in this action.
    Although Reynolds has substituted in for Lorillard, and is a party
    to the appeal, we nonetheless refer to defendant/appellant as
    “Lorillard,” because here we are concerned with Reynolds’s
    liability for Lorillard’s conduct, as opposed to Reynolds’s liability
    for its own conduct (an issue resolved by pretrial settlement).
    2
    Lorillard appeals, arguing: (1) federal law preempts
    liability on the theory pursued; (2) the trial court erred in
    refusing its proposed jury instruction that the sale of cigarettes is
    lawful; (3) the trial court erred in refusing to instruct the jury on
    “but-for” causation; (4) there is insufficient evidence that any
    defective design of Lorillard’s cigarettes caused Major’s death, in
    that Major would not have smoked any conceivable non-defective
    cigarette; and (5) the trial court erred in excluding evidence of
    Major’s asbestos exposure, in the form of admissions in Mrs.
    Major’s complaint, discovery responses, and claims against
    asbestos bankruptcy trusts. Mrs. Major cross-appeals, arguing
    the court erred in calculating the prejudgment interest to which
    she was entitled. We reject each of these arguments and affirm
    both the appeal and cross-appeal.
    In doing so, we conclude, among other things, that:
    (1) Congress has expressed no intent to foreclose tort liability
    against cigarette manufacturers, even if liability may have some
    negative impact on the sale of cigarettes; and (2) but-for
    causation does not apply in a case of multiple causes, different
    combinations of which are sufficient to have caused the harm.
    FACTUAL AND PROCEDURAL BACKGROUND
    1.     Major’s Smoking History
    There is no serious dispute that Major smoked heavily from
    1961 until he quit in 1989. What is not entirely clear is when he
    smoked Lorillard cigarettes, specifically Kents and Newports, as
    opposed to other brands. Mrs. Major testified that she did not
    recall Major being exclusive to any one brand, although she
    remembered seeing him smoke Kents, Marlboros and Winstons.
    In one interrogatory answer, which Lorillard entered into
    evidence, Mrs. Major stated that Major smoked Winstons from
    3
    1961 to 1965; Marlboros from 1961 to 1984; and Kents from 1984
    to 1989. However, anecdotal evidence reflects Major’s use of
    Lorillard cigarettes was not limited to the 1984-1989 period. A
    Navy colleague testified that, in Spring 1973, Major was smoking
    Kents and Newports. From that point until March 1975, he saw
    Major smoking Kents and (once) Marlboros. One of Major’s
    daughters testified that Major smoked Kents between 1979 and
    1981. In short, the jury appears to have concluded that Lorillard
    cigarettes accounted for approximately one-third of the harm
    Major suffered from cigarettes – a conclusion broadly supported
    by the evidence that he smoked Lorillard cigarettes, although not
    exclusively, during 12 years of his nearly 30-year smoking
    history.
    Major quit smoking in 1989. It was hard. Later, when he
    encouraged his daughter to get her husband to quit, he told her
    that “[i]t’s going to be hard to quit” and “[i]t’s really tough to
    quit.” Before he stopped, Major had tried to quit perhaps four
    times; each attempt had been unsuccessful and he had resumed
    the habit. Major’s smoking history was in line with expert
    testimony that, due to nicotine addiction, only three percent of
    smokers’ attempts to quit are successful and, on average, it takes
    seven or eight years for a smoker to stop smoking once he or she
    has chosen to do so.
    2.     Major’s Cancer and Death
    In 1997, Major was diagnosed with small cell lung cancer,
    which the lung pathologist expert described as a “bad, bad type of
    cancer.” It metastasized to Major’s lymph nodes, brain, liver and
    bone. He was dead in a year. There is no dispute that Major’s
    lung cancer was caused, at least in part, by cigarette smoke
    carcinogens. At trial, Lorillard questioned whether it was not
    4
    also caused by asbestos exposure. On that, the medical evidence
    was, at best, inconclusive. There was no evidence that Major had
    asbestosis or chest cavity scarring caused by asbestos. While this
    did not exclude asbestos as a cause of Major’s lung cancer, most
    people who have asbestos-caused lung cancer “usually” also
    present with evidence of a scar disease specific to asbestos.
    3.     Plaintiff’s First Action
    In January 1999, plaintiff brought suit against Lorillard,
    two other cigarette manufacturers, and numerous asbestos
    manufacturers (the “First Action”). She alleged that Major’s
    cancer was caused by exposure to both asbestos and cigarettes.
    4.     The Action is Dismissed and Refiled Six Years Later
    In 2005, the parties then remaining in the First Action
    agreed to a dismissal without prejudice (the “Dismissal
    Agreement”). At that time, several smoking-related cases were
    then pending in appellate courts, and the parties concluded that
    those cases might control, or at least affect, the disposition of this
    one. The parties agreed that plaintiff could refile her action after
    the appellate cases had been resolved, and that, if she did, “[a]ll
    prior costs and C.C.P. § 998 offers will be tacked onto and
    applicable to, any refiled Action.” The Dismissal Agreement is at
    issue here solely in connection with plaintiff’s cross-appeal.
    The case was ultimately refiled in 2011.
    5.     The Operative Complaint
    The operative pleading in the refiled action is Mrs. Major’s
    first amended complaint, filed in February 2012. By this time,
    plaintiff had resolved her disputes with the asbestos
    manufacturers, and the only defendants were cigarette
    companies. Nonetheless, the operative complaint still alleged
    5
    that Major’s cancer had been caused by “the exposure to asbestos
    and tobacco.”
    Mrs. Major alleged two wrongful death causes of action:
    negligence and products liability. She alleged that defendants’
    cigarettes were defective when used as intended, and their risks
    outweighed their benefits.
    6.     The Trial
    The other cigarette company defendants settled, and the
    case proceeded to jury trial against Lorillard, on the theory of
    design defect under the risk/benefit test, and negligent design
    which, in this case, was virtually identical to the risk/benefit
    theory. What was remarkable about the case was that Lorillard
    called no witnesses on its own behalf; the only testimony it
    elicited was through cross-examination of plaintiff’s witnesses.
    A.    Evidence That Lorillard’s Cigarettes Were Defective
    On the issue of Lorillard’s defective design, plaintiff elicited
    expert testimony to the following effect: (1) cigarettes are highly-
    engineered products, with design choices being made on every
    possible detail, including, for example, the length and diameter of
    the cigarette, the weight of the tobacco, the type of filter, the
    density of the coating over the inside of the filter, and the flavor
    additives; (2) cigarette “tar” -- the chemicals produced by smoking
    – includes 69 identifiable carcinogens; (3) at the time plaintiff
    was smoking Lorillard cigarettes, the state of the art was such
    that cigarette manufacturers could have made a no-tar cigarette,
    both as a traditional cigarette (which actually was marketed at
    the time) and as an aerosolized e-cigarette (which was not); and
    (4) nonetheless, Lorillard continued to sell Kent and Newport
    cigarettes, which contained substantial tar. Lorillard did not
    contest any of this evidence, but instead suggested that a no-tar
    6
    cigarette was not a commercially viable alternative design, in
    that although there were a few no-tar brands marketed, very few
    smokers found them satisfying. Plaintiff’s expert agreed that no-
    tar cigarettes would not be used by the majority of smokers, as
    long as higher tar cigarettes remained on the market.
    B.    Evidence That the Design of Lorillard’s Cigarettes
    Was a Cause of Major’s Cancer
    As to whether the design of Lorillard’s cigarettes was a
    substantial factor in causing Major’s cancer, it was not disputed
    that cigarette smoking itself played a substantial factor in
    causing the cancer. The issue at trial was whether the design of
    Lorillard’s cigarettes was a substantial factor, as opposed to the
    simple fact that Major smoked. Plaintiff presented expert
    testimony that lung cancer is a total dose/response disease,
    meaning that “the more that you are exposed to a carcinogen . . . ,
    the lot more likely you are going to develop a disease that is
    caused by it.” One might infer that if the design of Lorillard’s
    cigarettes resulted in an increased exposure to carcinogens
    (which they did, compared to a no-tar alternative), the design
    would also result in an increased risk of cancer. This was made
    explicit in expert testimony. Plaintiff’s lung pathology expert
    agreed that if the design of Lorillard’s cigarettes resulted in
    increased exposure to carcinogens, there is no doubt that those
    increased exposures “would be causal specifically in Captain
    Major’s lung cancer.” The expert testified that it is scientifically
    impossible to assign causal exposures to parts of an overall
    aggregate dose. The best science can do is say that “all of the
    carcinogens that he was exposed to contributed to cause his small
    cell lung cancer.” The expert implicated every cigarette Major
    7
    smoked from birth to 1987 as a substantial factor in his lung
    cancer.
    C.     Evidence Pertaining to Asbestos
    One of Lorillard’s theories of defense was that, even
    conceding its cigarettes contributed in some way to Major’s
    cancer, the cancer could be attributed to Major’s smoking of other
    cigarettes combined with his asbestos exposure. Expert
    testimony indicated that asbestos and cigarette smoke
    carcinogens work synergistically to create an increased risk of
    lung cancer over and above the risk caused by simply adding
    together the risks caused by the total exposures. That Major
    smoked other brands of cigarettes, for many years, is
    uncontroverted. It is also uncontroverted that he was exposed to
    asbestos. What was controverted was whether his asbestos
    exposure was a substantial factor in his development of lung
    cancer.
    Plaintiff’s counsel, in his opening statement, conceded
    probable asbestos exposure, stating, “there’s no question that
    Captain Major, when we go through his career, was aboard ship
    and doing things where there was significant activity of asbestos
    products in his vicinity, and he probably had some exposure to
    it.” But counsel did not concede causation from asbestos, stating,
    “the evidence will show you that [Major’s cancer] was certainly
    caused by cigarettes and may have also been contributed to by
    asbestos exposure [that] he had.”
    Plaintiff’s lung pathology expert testified that there was no
    evidence of asbestos-related lung scarring, which is usually seen
    when a lung cancer is caused by asbestos. He conceded, though,
    that he had been looking at a small tissue sample which was
    “probably not enough, really, to make an absolute conclusion.”
    8
    He agreed that Major had been exposed to asbestos, and testified
    that Major’s cancer might have involved both cigarettes and
    asbestos. In cross-examination based on Mrs. Major’s
    interrogatory responses, the expert conceded that if the
    interrogatory responses were true, Major suffered significant
    exposure to asbestos and asbestos “was a cause” of Major’s lung
    cancer. At one point he testified that Major’s lung cancer “was
    caused by the combined effect of asbestos and the carcinogens in
    cigarette smoke.” On redirect, the expert explained that, prior to
    trial, he did not have sufficient information regarding Major’s
    asbestos exposure to reach opinions regarding asbestos. He
    agreed that if Major had been exposed to asbestos and cigarette
    smoke carcinogens, both contributed to his cancer. Other than
    the fact that Major had been exposed to asbestos, there was no
    medical evidence – such as test results or lung scarring – showing
    that Major was afflicted with an asbestos-related disease.
    Plaintiff’s expert pulmonologist testified similarly. It is not
    necessary to have asbestosis in order to have an asbestos-caused
    lung cancer, but it is “common” for them to present together.
    Major did not have radiologic evidence of an exposure to asbestos
    sufficient to cause a scar response. The pulmonologist could not
    say that asbestos contributed to Major’s malignancy, nor could he
    exclude it as a cause. However, he conceded that he did not have
    a sufficient understanding of Major’s work history to determine if
    asbestos had been involved.3
    Prompted by the testimony of plaintiff’s experts, Lorillard
    wanted to introduce evidence of Major’s exposure to asbestos.
    3     As Lorillard called no witnesses, no defense expert testified
    that Major’s lung cancer was caused in whole or in part by
    asbestos.
    9
    Specifically, it sought to introduce excerpts from Mrs. Major’s
    complaint, Mrs. Major’s admissions in interrogatories, and Mrs.
    Major’s assertions in claims against asbestos bankruptcy trusts,
    which would show both Major’s history of asbestos exposure and
    Mrs. Major’s legal assertion that the asbestos exposure was a
    factor in causing Major’s cancer. Mrs. Major objected, and the
    asbestos evidence which defendant was permitted to introduce
    was limited by the trial court’s rulings and, in one case, by a
    stipulation by the parties. Lorillard challenges these rulings on
    appeal, and we will discuss them at length in the Discussion
    section of our opinion.
    We describe here the evidence which Lorillard was
    permitted to introduce at trial. It included a lengthy discussion
    of Major’s job history, including the many years he spent as a
    Naval officer. This specifically referenced asbestos exposure in
    several situations, as excerpted here: “Decedent was exposed to
    asbestos-containing materials installed on the [U.S.S.] England,
    including those installed prior to the time he served on board. . . .
    Decedent qualified as a surface warfare officer, which required
    him to regularly stand watch in the engine rooms. Decedent was
    exposed to asbestos-containing materials installed on the [U.S.S.]
    Fox prior to the time he served on board. . . .” The interrogatory
    answer, as read to the jury, ended with, “At all of the above sites,
    decedent worked with or around asbestos-containing
    materials . . . .” Finally, Lorillard read an interrogatory answer
    in which Mrs. Major stated that Major “suffered significant
    exposure to asbestos-containing products in the U.S. Navy.
    Plaintiff further responds that she does not have sufficient
    personal knowledge to identify and describe each and every
    exposure to asbestos decedent suffered throughout his lifetime.”
    10
    7.     The Verdict
    On a special verdict, the jury unanimously concluded that
    the design of Lorillard’s cigarettes was a substantial factor
    causing harm to Major, and that the risks outweighed the
    benefits of their design. Major’s negligence was also found to be a
    substantial factor, as were other cigarette manufacturers;
    asbestos exposure was not. Fault was allocated 50 percent to
    Major, 33 percent to the other cigarette manufacturers, and
    17 percent to Lorillard. The jury calculated economic damages at
    $2,736,700, and non-economic damages at $15 million. No
    punitive damages had been sought.
    8.     The Judgment
    The court denied Lorillard’s motions for a new trial and
    judgment notwithstanding the verdict. Reducing the damages for
    comparative negligence and giving credit for settlements with
    other tortfeasors, judgment was entered for plaintiff in the
    amount of $3,780,100.93, plus interest and costs.
    9.     Prejudgment Interest
    It is undisputed that, in connection with the First Action,
    plaintiff had served, and defendant had rejected, an offer to settle
    under Code of Civil Procedure section 998 for $199,999. It was
    also undisputed that, because plaintiff’s result at trial was better
    than her rejected offer, she was entitled to prejudgment interest.
    The parties further agreed that, due to the Dismissal
    Agreement, plaintiff was entitled to prejudgment interest
    accruing during: (1) the period between service of her offer to
    settle and dismissal of the First Action; and (2) the period
    between the filing of the second action and judgment in the
    second action. They disputed, however, whether plaintiff was
    also entitled to prejudgment interest during the period in
    11
    between, when no action was pending. The issue was briefed,
    and the trial court agreed with Lorillard that plaintiff was not
    entitled to prejudgment interest during the period that the
    Dismissal Agreement was in effect.
    10. Cross-Appeals
    Lorillard timely appealed from the judgment; Mrs. Major
    timely appealed the denial of prejudgment interest during the
    period the Dismissal Agreement was in effect.
    DISCUSSION
    1.     Federal Law Does Not Preempt Plaintiff’s Claim
    Lorillard’s first argument on appeal is that liability in this
    case is federally preempted. The argument begins: Plaintiff
    prevailed on a theory that virtually all cigarettes sold in the
    United States – all except the handful of no-tar cigarettes which
    had a negligible market share – are defectively designed. Tort
    liability on this basis is the functional equivalent of a ban on all
    cigarettes. It continues: But Congress has concluded that
    cigarettes may, in fact, be sold in the United States. Thus, tort
    liability on the theory successfully pursued by plaintiff is
    contrary to the intent of Congress, and must therefore be
    preempted.4
    4      We proceed to discuss whether the current state of federal
    law preempts state law tort liability for the design and sale of
    cigarettes. It is important to note, however, that we reject, for
    lack of evidence at trial, Lorillard’s initial premise – that tort
    liability in this case is the functional equivalent of a ban on all
    cigarettes. The Kent and Newport cigarettes Major smoked were
    not no-tar cigarettes, nor were they low-tar cigarettes. Many
    other cigarettes existed with lower tar yields, and it is only
    speculation that the jury’s conclusion that the Lorillard cigarettes
    12
    We start with some general observations about federal
    preemption. “ ‘There is ordinarily a “strong presumption” against
    preemption. [Citations.] “Consideration of issues arising under
    the [s]upremacy [c]lause ‘start[s] with the assumption that the
    historic police powers of the States [are] not to be superseded by
    . . . Federal Act unless that [is] the clear and manifest purpose of
    Congress.’ [Citation.] Accordingly, ‘ “[t]he purpose of Congress is
    the ultimate touchstone” ’ of pre-emption analysis. [Citation.]”
    [Citation.] However, when the state regulates in an area where
    there has been a history of significant federal presence the
    “ ‘assumption’ of nonpre-emption is not triggered . . . .”
    [Citation.]’ [Citation.]” (Sturgeon v. Bratton (2009)
    
    174 Cal.App.4th 1407
    , 1422 (Sturgeon).) While Congress has
    acted in the area of cigarette labeling and advertising, to the
    point of expressly preempting state laws to the contrary in those
    areas (Altria Group, Inc. v. Good (2008) 
    555 U.S. 70
    , 78-79 [state
    fraud liability not preempted]; Cipollone v. Liggett Group, Inc.
    (1992) 
    505 U.S. 504
    , 518-519 [express preemption clause of 1965
    federal act “merely prohibited state and federal rulemaking
    bodies from mandating particular cautionary statements on
    cigarette labels [citation] or in cigarette advertisements
    [citation]” but does not encompass “common-law damages
    actions”]), Lorillard points to no “significant federal presence”
    (Sturgeon, supra, 174 Cal.App.4th at p. 1422) in terms of
    cigarette design and sale. As such, the usual presumption of
    nonpreemption applies.
    “Preemption of state law can be express or implied. It is
    express when Congress positively enacts a preemption clause
    Major smoked were defective is equivalent to a finding that all
    cigarettes are defective and must be removed from the market.
    13
    displacing state law; it is implied when courts infer a
    congressional intent to displace state law under one of three
    doctrines of ‘implied preemption’—namely, ‘field, conflict, or
    obstacle preemption.’ [Citation.] ‘Field preemption applies when
    federal regulation is comprehensive and leaves no room for state
    regulation’; ‘[c]onflict preemption is found when it is impossible to
    comply with both state and federal law simultaneously’; and
    ‘[o]bstacle preemption occurs when state law stands as an
    obstacle to the full accomplishment and execution of
    congressional objectives.’ [Citation.]” (Roberts v. United
    Healthcare Services, Inc. (2016) 
    2 Cal.App.5th 132
    , 142; see also
    Brown v. Mortensen (2011) 
    51 Cal.4th 1052
    , 1059.)
    Lorillard’s argument is one of obstacle preemption. It is
    based on the premise that Congress intends to allow cigarettes to
    be sold, and that tort liability for the sale of cigarettes would at a
    minimum stand as an obstacle to the accomplishment of that
    goal. But Lorillard does not direct us to any specific federal
    statute to establish its premise that Congress does, in fact, intend
    that cigarettes be exempt from tort liability. Instead, as we see
    it, Lorillard hangs its argument primarily on language in a
    United States Supreme Court case that has nothing to do with
    tort liability, Food and Drug Administration v. Brown &
    Williamson Tobacco Corp. (2000) 
    529 U.S. 120
     (Brown &
    Williamson).
    In Brown & Williamson, the Supreme Court considered
    whether the Food and Drug Administration (“FDA”) possessed
    jurisdiction to regulate tobacco products, on the theory that
    nicotine is a drug within the meaning of the Food, Drug, and
    Cosmetic Act (“FDCA”). (Brown & Williamson, 
    supra,
     529 U.S.
    at p. 125.) The court concluded that the FDA did not have such
    14
    jurisdiction. (Id. at p. 126.) The issue in Brown & Williamson
    was not one of federal preemption of state law, but one of an
    agency’s (in this case, the FDA’s) construction of a statute that it
    administers (the FDCA). The court’s consideration of the issue
    began with whether Congress had spoken directly on the FDA’s
    jurisdiction, and the court ultimately concluded that Congress
    had. (Id. at p. 133.) Specifically, the court found that, if
    cigarettes were regulated under the FDCA, the FDA would be
    required to remove them from the market. (Id. at pp. 135-136.)
    But when the court considered Congress’s history of regulating
    cigarettes, the court concluded that a “ban of tobacco products by
    the FDA would . . . plainly contradict congressional policy.” (Id.
    at p. 139.) The court believed that Congress had been aware of
    the health consequences of tobacco when it chose to regulate
    cigarette labeling and advertising while “stopp[ing] well short of
    ordering a ban.” (Id. at p. 138.) It believed that, if the FDA
    enacted a ban, that would directly counter Congress’s implied
    decision not to enact a federal ban itself. (Id. at pp. 137-139.)
    Lorillard reasons that if an FDA ban on tobacco products
    would contradict congressional policy, tort liability that was the
    functional equivalent of a state law ban would also contradict
    congressional policy, and is therefore federally preempted. We
    have already rejected for lack of evidentiary support Lorillard’s
    claim that tort liability in this case equates with a ban. Beyond
    that, Lorillard relies on certain language from Brown &
    Williamson stating that Congress’s intent was that “cigarettes
    and smokeless tobacco will continue to be sold,” without
    recognizing the implicit limitation on that language in light of
    Brown & Williamson’s limited inquiry into whether the FDA
    could impose a ban.
    15
    The flaw in Lorillard’s argument is that Congress’s intent
    that a federal agency created by Congress did not have the
    authority to impose a nationwide ban on cigarettes says little
    about whether a state could impose such a ban within its borders
    under the state’s traditional police powers. That issue was not
    before the Supreme Court; nor do we have to decide it here.
    Standing alone, Brown & Williamson’s discussion of
    Congressional intent vis-à-vis the FDA does not overcome the
    presumption against preemption. And nothing in Brown &
    Williamson tells us about Congress’s intent as to state
    restrictions on cigarettes.
    Following Brown & Williamson, Congress enacted
    legislation specifically addressing the issue. In 2009, Congress
    superseded the holding of Brown & Williamson by in fact
    granting the FDA authority over tobacco products, including
    cigarettes. (21 U.S.C. § 387a(a) & (b).) In that statute, the
    Family Smoking Prevention and Tobacco Control Act, Congress
    specified that the FDA’s authority did not include the authority
    to ban all cigarettes. (21 U.S.C. § 387g(d)(3).) At the same time,
    Congress specified that nothing in that subchapter (with an
    exception not relevant here) “shall be construed to limit the
    authority of a Federal agency (including the Armed Forces), a
    State or political subdivision of a State, or the government of an
    Indian tribe to enact, adopt, promulgate, and enforce any law,
    rule, regulation, or other measure with respect to tobacco
    products that is in addition to, or more stringent than,
    requirements established under this chapter, including a law,
    rule, regulation, or other measure relating to or prohibiting the
    sale, distribution, possession, exposure to, access to, advertising
    and promotion of, or use of tobacco products by individuals of any
    16
    age . . . .” (21 U.S.C. § 387p(a)(1).) Considered together, these
    statutes state that while Congress’s intent is that the FDA not
    ban cigarettes entirely, Congress has made no such
    determination with respect to the states. (U.S. Smokeless
    Tobacco Mfg. Co. LLC v. City of New York (2013) 
    708 F.3d 428
    ,
    433 [“the preservation clause of [this section] expressly preserves
    localities’ traditional power to adopt any ‘measure relating to or
    prohibiting the sale’ of tobacco products”].)
    Lorillard responds that this statute does not “retroactively
    abrogate the Supreme Court’s conclusion that, at least before
    2009 [the year Congress granted FDA authority], Congress
    deliberately chose to foreclose the removal of tobacco products
    from the market.” But there is no abrogation, because there was
    no such congressional intent. In Brown & Williamson, the
    Supreme Court concluded that Congress did not intend for the
    FDA to remove tobacco products from the market; it did not
    address the states’ powers. The Family Smoking Prevention and
    Tobacco Control Act confirmed that the Supreme Court was
    correct in interpreting Congress’s intent with respect to the FDA,
    but also confirmed that Congress did not have a similar intent
    with regard to the states.5
    5     Lorillard offers no other interpretation of this statutory
    language. Instead, Lorillard notes that an uncodified section of
    the same statute provided that it shall not be construed to “affect
    any action pending in Federal, State, or tribal court, or any
    agreement, consent decree, or contract of any kind.” (Pub. L. No.
    111-31 (June 22, 2009) 
    123 Stat. 1776
    , § 4(a)(2).) Lorillard
    interprets this provision to mean that no “rationale based on” the
    statute can have any effect on this case, as it is “a continuation of
    one that was pending” before the statute was enacted in 2009.
    Even if the provision somehow prevents a court from considering
    17
    Because we find no general federal preemption of state tort
    law that regulates the sale of cigarettes, Lorillard’s argument
    fails. Other courts have agreed. Just this year, the Florida
    Supreme Court rejected similar preemption claims by cigarette
    manufacturers. (R.J. Reynolds Tobacco Company v. Marotta
    (2017) 
    214 So.3d 590
     (Marotta).) In Marotta, the tobacco
    company defendant argued, just as Lorillard does here, that
    Brown & Williamson establishes that Congress intended the
    manufacture and sale of cigarettes to continue, and therefore
    preempts state law claims based on such manufacture and sale.
    (Marotta, at pp. 595-596.) The Florida court disagreed,
    concluding, as do we, that “while Brown & Williamson held that
    the FDA did not have the authority to regulate tobacco products,
    it said nothing about the states’ power to do the same.” (Marotta,
    at p. 598.) Considering Congress’s history of tobacco regulation,
    the Marotta court concluded that while Congress expressly
    preempted state and local regulations pertaining to labeling and
    advertising cigarettes, “there is no indication that Congress had a
    ‘clear and manifest purpose’ to insulate the tobacco industry from
    state tort liability.” (Id. at p. 600.) While Marotta did not have to
    consider the validity of a state ban on cigarettes, it said even if an
    its expression of congressional intent, it is not applicable here
    because the statute was enacted well after the First Action was
    dismissed and before the current action was actually filed. There
    is no suggestion in the Dismissal Agreement that the law in
    effect at the time the First Action was filed would govern.
    Indeed, the intent of the Dismissal Agreement was to enable
    certain cases to wend their way through the appellate system, as
    their resolution might affect this action.
    18
    outright ban on cigarette sales was preempted, state tort law
    liability was preserved.6 (Id. at p. 601.)
    Lorillard notes that several federal district courts have
    accepted its preemption argument. (Pooshs v. Philip Morris
    USA, Inc. (N.D. Cal. 2012) 
    904 F.Supp.2d 1009
    , 1025-1026;
    appeal filed Mar. 10, 2016; Johnson v. Brown & Williamson
    Tobacco Corp. (D. Mass. 2004) 
    345 F.Supp.2d 16
    , 21; Conley v.
    R.J. Reynolds Tobacco Co. (N.D. Cal. 2002) 
    286 F.Supp.2d 1097
    ,
    1107.) We find these authorities unpersuasive. These cases
    uncritically accept the premise that Brown & Williamson
    6      In oral argument, Lorillard suggested that Marotta was
    incorrectly decided because it failed to consider the effect of Geier
    v. American Honda Motor Company, Inc. (2000) 
    529 U.S. 861
    . In
    Geier, the U.S. Supreme Court concluded that a claim for tort
    liability for the failure to equip a vehicle with airbags was
    preempted by a safety standard, promulgated pursuant to the
    National Traffic and Motor Vehicle Safety Act, which provided for
    a general phasing-in of airbags and specifically permitted other
    restraints to be used instead. (Id. at pp. 864-865, 874-875, 879.)
    The court concluded that the tort action was preempted, because
    it would have stood as an obstacle to the federal intent that
    multiple different types of restraints be used at that time and
    that mandatory air bag installation was to be deferred. (Id. at
    p. 881.) Geier does not undermine Marotta, or our conclusion,
    because it is based on a distinguishable federal standard. Geier
    found preemption based on an actual federal safety standard that
    permitted different types of restraints to be used in motor
    vehicles. Lorillard would analogize to a congressional intent that
    cigarettes be sold in the United States. But, as we have
    explained, there is no such intent. Lorillard points to no
    statutory enactment providing that cigarettes shall be sold;
    Brown & Williamson holds only that Congress did not intend
    that a federal agency could ban them. Subsequent federal
    legislation reflects a very different Congressional intent.
    19
    confirmed an across-the-board congressional intent that
    cigarettes not be banned; in reaching this conclusion the courts
    did not appear to consider that Brown & Williamson addressed
    FDA action, not state action. We therefore decline to adopt these
    district court opinions. Moreover, in an en banc decision, the
    Eleventh Circuit decided that Brown & Williamson “does not
    address state sovereignty, and it does not consider the
    preemptive reach of federal legislation on tobacco.”7 (Graham v.
    R.J. Reynolds Tobacco Company (11th Cir. 2017) 
    857 F.3d 1169
    ,
    1190 (en banc).) As such, the traditional police powers of the
    states to regulate cigarette sales and impose tort liability on
    cigarette manufacturers remain. (Id. at p. 1191.)
    2.    Lorillard Was Not Entitled to an Instruction That
    Cigarettes Are Lawful
    Lorillard next argues, as a alternative to its preemption
    argument, that the trial court erred in rejecting its instruction on
    the legality of cigarette sales. Specifically, Lorillard requested
    that the jury be instructed: “I remind you that the manufacture
    and sale of cigarettes is a lawful activity. Therefore, you cannot
    find Lorillard Tobacco Company liable merely based on a finding
    7      The en banc panel consisted of 10 judges. The 7-judge
    majority held that Brown & Williamson did not consider the
    preemptive reach on states of federal legislation of tobacco. An
    eighth judge concurred in “the majority opinion’s decision that
    federal law does not preempt” jury findings of liability against
    cigarette manufacturers. (Graham v. R.J. Reynolds Tobacco
    Company, supra, 857 F.3d at p. 1191 (conc. & dis. opn. of Carnes,
    J.).) A ninth judge concluded that a due process error meant it
    was unnecessary to reach the preemption issue. (Id. at p. 1315
    (dis. opn. of Wilson, J.).) Only one judge expressly found
    preemption. (Id. at p. 1194 (dis. opn. of Tjoflat, J.).)
    20
    that Lorillard’s product caused injury, or solely because Lorillard
    manufactures, advertises, or sells cigarettes.”
    California law on the duty to instruct is clear: “A party is
    entitled to have the jury instructed on each viable legal theory
    supported by substantial evidence if the party requests a proper
    instruction. [Citation.]” (Orichian v. BMW of North America,
    LLC (2014) 
    226 Cal.App.4th 1322
    , 1333.) “A court may refuse a
    proposed instruction that is erroneous, misleading, or otherwise
    improper and ordinarily has no duty to modify a proposed
    instruction in a civil case. [Citations.] This general rule is
    inapplicable, however, if the inaccuracy is minor and easy to
    correct and the failure to do so would leave the jury inadequately
    instructed on an important issue. [Citations.]” (Ibid.)
    Here, the instruction Lorillard sought was both
    unnecessary and not supported by the evidence. On appeal,
    Lorillard attempts to characterize this case as one in which it
    was held liable simply for selling cigarettes, in that plaintiff’s
    design expert took the position that any cigarette which produced
    tar could have been more safely designed, given that no-tar
    designs were available. But the issue before the jury was
    whether the Kent and Newport cigarettes smoked by Major – the
    specific tar and nicotine yields of which were before the jury in
    written exhibits – were defective. That plaintiff’s expert may
    have drawn the line beyond Lorillard’s cigarettes does not mean
    that any brand of cigarettes other than those smoked by Major
    was actually at issue here. The jury did not find liability for all
    cigarettes. The issue was: under the design defect test, do the
    benefits of Lorillard’s cigarettes – which delivered more tar than
    several competing labels – outweigh their risk?
    21
    We therefore conclude Lorillard was not entitled to the
    instruction it sought. But even if the trial court erred, the error
    would have been harmless. That the sale of cigarettes is lawful
    and not alone a basis of liability is an obvious fact known to every
    juror. Tort liability is frequently imposed for the sale of products
    lawful in the abstract; the issue is whether the particular product
    was defective and caused harm. The same analysis applies to
    cigarettes.
    Our conclusion is partially supported by the history of
    California law on the liability of cigarette manufacturers. If this
    case had been presented during 1988 through 1997, under
    California law applicable then, Lorillard’s jury instruction
    argument might have more traction. During those ten years,
    cigarettes were entitled to special treatment immunizing
    liability. No longer. Civil Code section 1714.45, subdivision
    (a)(1) provides a statutory immunity from product liability
    actions for common consumer products when the product is
    “inherently unsafe and the product is known to be unsafe by the
    ordinary consumer who consumes the product with the ordinary
    knowledge common to the community.” Subdivision (a)(2)
    specifies certain products, such as alcohol, to which the immunity
    applies. For a ten-year period, from January 1, 1988, through
    December 31, 1997, the statute also applied to tobacco, but
    tobacco was then removed from the list. (Myers v. Philip Morris
    Companies, Inc. (2002) 
    28 Cal.4th 828
    , 832-834.) In repealing the
    immunity for tobacco, it was the “intention of the Legislature . . .
    to declare that there exists no statutory bar to tobacco-related
    personal injury, wrongful death, or other tort claims against
    tobacco manufacturers and their successors in interest by
    California smokers or others who have suffered or incurred
    22
    injuries, damages, or costs arising from the promotion,
    marketing, sale, or consumption of tobacco products.” (Civ. Code,
    § 1714.45, subd. (f).) “Therefore, with respect to conduct falling
    outside the 10-year immunity period, the tobacco companies are
    not shielded from product liability lawsuits.” (Myers v. Philip
    Morris Companies, Inc., supra, 28 Cal.4th at p. 832; see also
    Naegele v. R.J. Reynolds Tobacco Co. (2002) 
    28 Cal.4th 856
    , 860
    [“The liability of tobacco companies based on their conduct
    outside the 10-year period is governed by general tort
    principles.”].)
    As tort liability for defectively designed cigarettes is
    governed by the same tort law principles which govern tort
    liability for any defectively designed product, Lorillard’s proposed
    instruction regarding the lawfulness of cigarettes would have had
    no effect on this action.
    3.     The Court Did Not Err in Refusing to Instruct on But-For
    Causation
    Lorillard argues the court erred in refusing to instruct the
    jury on but-for causation. For us to properly address the issue,
    we must take a brief detour to the evolution of causation
    instructions in California.
    A.     Legal Background
    In 1991, the California Supreme Court considered two
    then-current BAJI instructions regarding causation. One, former
    BAJI No. 3.75, provided a but-for test. The second, BAJI
    No. 3.76, was a substantial factor test. In Mitchell v. Gonzales
    (1991) 
    54 Cal.3d 1041
    , the court concluded that the but-for
    instruction was poorly written and caused jury confusion. (Id. at
    pp. 1050-1052.) The Supreme Court disapproved of the but-for
    instruction and held the substantial factor instruction was a
    23
    better instruction. (Id. at pp. 1045, 1053.) In the course of its
    discussion, the court noted that, generally speaking, the
    substantial factor test subsumes the but-for test. (Id. at p. 1052.)
    But this general proposition is untrue when “two ‘causes concur
    to bring about an event and either one of them operating alone
    could have been sufficient to cause the result.’ ” (Id. at p. 1049.)
    In such a case, neither cause can be considered a but-for cause of
    the injury, as the injury would have occurred without either one,
    but both causes are substantial factors in bringing about the
    injury. (Ibid.) In short, (1) in the “great majority of cases,” the
    substantial factor test produces the same result as the but-for
    test, and (2) the substantial factor test also produces the right
    result in cases of independent causes, where the but-for test
    would lead to incorrect results. (Id. at pp. 1052-1053.) Although
    the court disapproved of the then-existing but-for instruction, it
    did not remove the concept of but-for causation from California
    law, and observed that nothing in the opinion should be read to
    discourage the jury instruction committee from drafting a new
    and proper but-for instruction. (Id. at p. 1054, fn. 10.)
    Twelve years later, the court reaffirmed that there is still a
    place for but-for causation in the law, holding that a client cannot
    recover for attorney malpractice in a transactional setting unless
    the client can establish the harm would not have occurred
    without the malpractice. (Viner v. Sweet (2003) 
    30 Cal.4th 1232
    ,
    1235.) In the course of its discussion, the court reaffirmed that,
    generally, the substantial factor test subsumes the but-for test.
    (Id. at p. 1240.) It also reaffirmed that the but-for test is
    inappropriate in cases when two forces are actively operating and
    each is sufficient to bring about the harm. (Ibid.) The court
    recognized that this exceptional situation “has been given various
    24
    labels, including ‘concurrent independent causes’ [citation],
    ‘combined force criteria’ [citation], and ‘multiple sufficient causes’
    [citation].” (Ibid.)
    The current causation jury instruction is CACI No. 430. It
    provides, “A substantial factor in causing harm is a factor that a
    reasonable person would consider to have contributed to the
    harm. It must be more than a remote or trivial factor. It does
    not have to be the only cause of the harm. [¶] [Conduct is not a
    substantial factor in causing harm if the same harm would have
    occurred without that conduct.]” The instruction’s Use Note
    explains that “[t]he ‘but for’ test of the last optional sentence does
    not apply to concurrent independent causes, which are multiple
    forces operating at the same time and independently, each of
    which would have been sufficient by itself to bring about the
    same harm. [Citations.] Accordingly, do not include the last
    sentence in a case involving concurrent independent causes.”
    Contemporaneous with these developments in but-for
    causation doctrine, another line of cases was considering a
    problem of proof arising in cases of asbestos exposure. If a
    plaintiff has developed an asbestos-related disease after having
    been exposed to multiple defendants’ asbestos products, medical
    science was unable to determine which defendant’s product
    included the specific fibers that caused the plaintiff’s disease.
    (Rutherford v. Owens-Illinois, Inc. (1997) 
    16 Cal.4th 953
    , 976
    (Rutherford).) As a result of this barrier, the long latency-period
    of asbestos-related disease, and the occupational settings that
    often exposed workers to multiple forms and brands of asbestos,
    our Supreme Court concluded than an asbestos plaintiff need
    only prove “that exposure to the defendant’s asbestos products
    was, in reasonable medical probability, a substantial factor in
    25
    causing or contributing to his risk of developing cancer.” (Id. at
    pp. 957-958.)
    In light of Rutherford, California adopted CACI No. 435,
    titled “Causation for Asbestos-Related Cancer Claims.” It
    provides, “A substantial factor in causing harm is a factor that a
    reasonable person would consider to have contributed to the
    harm. It does not have to be the only cause of the harm. [¶]
    [Name of plaintiff] may prove that exposure to asbestos from
    [name of defendant]’s product was a substantial factor causing
    [his/her/[name of decedent]’s] illness by showing, through expert
    testimony, that there is a reasonable medical probability that the
    exposure was a substantial factor contributing to [his/her] risk of
    developing cancer.”
    Subsequent authority has extended Rutherford to cancer
    caused by long-term exposure to multiple different toxins.
    (Bockrath v. Aldrich Chemical Co., Inc. (1999) 
    21 Cal.4th 71
    , 77,
    79.) While one case suggested that Rutherford’s rule “would
    appear appropriate” for injuries due to cigarette smoke, the
    appellate court ultimately concluded that it need not resolve the
    issue on the facts before it. (Whiteley v. Philip Morris, Inc. (2004)
    
    117 Cal.App.4th 635
    , 700-701 (Whiteley).)
    B.     Causation Instructions in This Case
    With this background, we now discuss the jury instruction
    issue as it arose in this case.
    Pretrial, Mrs. Major argued for the Rutherford standard of
    causation (CACI No. 435). Lorillard wanted the usual
    substantial factor instruction, including the optional but-for
    language (CACI No. 430). The trial court initially determined
    that, in the absence of authority that Rutherford applied in a
    smoking case, it would not give the Rutherford instruction.
    26
    Therefore, the court would give CACI No. 430. The dispute then
    turned to whether the last bracketed line of the instruction,
    regarding but-for causation, also would be given. Plaintiff
    objected to that sentence.
    Because the Use Note stated that the but-for sentence
    should not be given in cases of concurrent independent causes,
    the debate turned to whether this case involved concurrent
    independent causes, or some other type of multiple causes.8 At
    this point, the court decided to defer ruling until after it heard
    the evidence, although it was, at that moment, “inclined” to
    instruct on but-for causation.
    Near the close of the evidence, the court returned to the
    issue. By this time, the court’s tentative view was that the jury
    should not be instructed on but-for causation, but it intended to
    further research the issue. After reviewing the law, particularly
    the Whiteley case, the court reconsidered whether to give the
    Rutherford instruction. The court stated, however, that even if it
    did not give Rutherford, it was not going to give the but-for
    sentence from CACI No. 430. The court was convinced that but-
    for causation did not apply to this case. Given the uncertainty as
    to whether Rutherford applied to a cigarette case, the court
    believed that giving CACI No. 430 without the but-for instruction
    8      The parties appeared to go off on a tangent on whether
    asbestos exposure and cigarette smoking were “dependent” or
    “independent.” This was mistaken. The issue is not whether the
    causes were dependent or independent; “concurrent independent
    causes” is a term of art, used to refer to the situation of two forces
    each sufficient to bring about the harm. The parties could have
    just as easily considered whether the causes were “multiple
    sufficient causes,” a term some courts have used. (See Viner v.
    Sweet, 
    supra,
     30 Cal.4th at p. 1240.)
    27
    was a fair resolution of the problem.9 The court ultimately
    followed this course, instructing in the language of CACI No. 430,
    without the optional but-for language.
    C.    Analysis
    Preliminarily we note, as did the Whiteley court, that it
    appears that there is no reason that Rutherford would apply in
    cases of asbestos exposure and multiple toxic substance exposure,
    but not exposure to carcinogens in cigarettes. As the issue is not
    before us, we go no further, but await the proper case raising and
    fully briefing the issue.
    Because the trial court in this case did not give the
    Rutherford instruction, the only issue raised by this appeal is
    whether the court erred in declining to give the but-for
    instruction. The law is clear that but-for and substantial factor
    tests frequently lead to the same result. The law is also clear
    they may produce different results in cases of concurrent
    independent causes and that, in such cases, substantial factor
    leads to the correct result; but-for does not.
    Here, the parties’ argument on whether the but-for
    instruction should be given focused on whether this was a case of
    9     The court also agreed to give CACI No. 431, which
    provides, “A person’s negligence may combine with another factor
    to cause harm. If you find that [name of defendant]’s negligence
    was a substantial factor in causing [name of plaintiff]’s harm,
    then [name of defendant] is responsible for the harm. [Name of
    defendant] cannot avoid responsibility just because some other
    person, condition, or event was also a substantial factor in
    causing [name of plaintiff]’s harm.” On appeal, Lorillard argues
    that the court’s use of CACI No. 431 compounded its error in
    refusing to give the but-for language of CACI No. 430, but does
    not assert that giving CACI No. 431 was itself error.
    28
    concurrent independent causes. “Concurrent independent
    causes” are, as discussed above, two causes which concur to bring
    about an event when either one of them operating alone could
    have been sufficient to cause the result. We believe the issue
    raised by this case, although not specifically phrased in this
    manner, is how to deal with a case of more than two concurrent
    causes, when various combinations of the causes – although
    perhaps not any individual cause – would have been sufficient to
    cause the harm. Or, putting it more concretely, suppose there
    were three equal causes acting on Major’s lungs: Lorillard’s
    cigarettes, R.J. Reynolds’s cigarettes, and Philip Morris’s
    cigarettes. Suppose that each was only 33 1/3 percent
    responsible, and, acting alone, would not have been sufficient to
    cause Major’s cancer; but any two acting together would have
    been 66 2/3 percent responsible, and likely would have caused the
    cancer.10 No individual cigarette manufacturer’s liability would
    satisfy the but-for test, as Major would have developed cancer
    based on the other two alone; but no cigarette manufacturer
    would satisfy the independent concurrent cause test, because no
    individual manufacturer alone caused the cancer. In short, when
    there are three causes working together, any two of which would
    alone cause the harm, all three can escape liability via the but-for
    test.
    This precise scenario is addressed in the Restatement
    Third of Torts: Liability for Physical and Emotional Harm,
    10     This may, in fact, have been the jury’s thinking in this case.
    When subtracting out the 50 percent comparative negligence
    allotted to Major for choosing to smoke the cigarettes, the jury
    allocated approximately one-third of the remaining negligence to
    Lorillard, and two-thirds of the remaining negligence to other
    cigarette manufacturers (of which only two were sued).
    29
    section 27, comment f. Section 27 addresses the exception to but-
    for causation for “Multiple Sufficient Causes,” which is another
    term for concurrent independent causes. (Viner v. Sweet, 
    supra,
    30 Cal.4th at p. 1240.) The section provides, “If multiple acts
    occur, each of which . . . alone would have been a factual cause of
    the physical harm at the same time in the absence of the other
    act(s), each act is regarded as a factual cause of the harm.”
    Comment f explains, “In some cases, tortious conduct by one actor
    is insufficient, even with other background causes, to cause the
    plaintiff’s harm. Nevertheless, when combined with conduct by
    other persons, the conduct overdetermines the harm, i.e., is more
    than sufficient to cause the harm.” The comment provides, “The
    fact that an actor’s conduct requires other conduct to be sufficient
    to cause another’s harm does not obviate the applicability of this
    Section. [Citation.] Moreover, the fact that the other person’s
    conduct is sufficient to cause the harm does not prevent the
    actor’s conduct from being a factual cause of harm pursuant to
    this Section, if the actor’s conduct is necessary to at least one
    causal set.” The comment includes Illustration 3: “Able, Baker,
    and Charlie, acting independently but simultaneously, each
    negligently lean on Paul’s car, which is parked at a scenic
    overlook at the edge of a mountain. Their combined force results
    in the car rolling over the edge of a diminutive curbstone and
    plummeting down the mountain to its destruction. The force
    exerted by each of Able, Baker, and Charlie would have been
    insufficient to propel Paul’s car past the curbstone, but the
    combined force of any two of them is sufficient. Able, Baker, and
    Charlie are each a factual cause of the destruction of Paul’s car.”
    The but-for test simply does not govern when it would exclude a
    30
    substantial cause merely due to the fact that other causes acting
    together are alone sufficient to cause the harm.
    We believe this analysis is correct, and, in fact, necessary.
    Without this gloss on the concurrent independent cause rule,
    each of three equally liable tortfeasors can escape liability on the
    basis that they are neither but-for causes nor concurrent
    independent causes – a wholly unjust result. Yet this is exactly
    the result Lorillard seeks – it would use the but-for rule to avoid
    liability because the combined effects of Philip Morris’s cigarettes
    and R.J. Reynolds’s cigarettes were likely sufficient to cause
    Major’s death alone; despite the fact that Lorillard’s cigarettes,
    combined with either Philip Morris’s or R.J. Reynolds’s
    cigarettes, were likely also sufficient. We therefore conclude that
    multiple sufficient causes exist not only when there are two
    causes each of which is sufficient to cause the harm, but also
    when there are more than two causes, partial combinations of
    which are sufficient to cause the harm. As such, the trial court
    did not err in refusing to instruct the jury with the but-for test.
    4.     There Was Sufficient Evidence the Defective Cigarette
    Design Was a Substantial Factor in Causing Major’s
    Cancer
    Lorillard’s next argument is that there is insufficient
    evidence that its defective cigarette design was a substantial
    factor in causing Major’s lung cancer. Lorillard does not question
    the medical evidence; plaintiff’s expert specifically testified that if
    the design of Lorillard’s cigarettes resulted in increased exposure
    to carcinogens, those increased exposures were a factor in causing
    Major’s lung cancer. Instead, Lorillard argues that plaintiff had
    to introduce evidence that if Lorillard’s cigarettes had been no-tar
    31
    cigarettes, Major would have smoked them (or not smoked at all).
    We believe Lorillard’s argument is legally erroneous.
    Lorillard relies exclusively on Whiteley, supra,
    
    117 Cal.App.4th 635
    . In that case, the plaintiff argued that his
    wife’s cancer had been caused by the defendant’s cigarettes,
    which were defective due to their high levels of nicotine. (Id. at
    p. 696.) On the cigarette manufacturer’s appeal from a
    substantial jury verdict, the cigarette manufacturer argued that
    there was insufficient evidence of causation. The Court of Appeal
    agreed. (Id. at p. 702.) The court reasoned that there was no
    evidence that, if the defendant had lowered the nicotine in its
    cigarettes, the decedent would have smoked them, smoked less,
    or quit smoking. Any such conclusion would have been
    speculative, and contrary to the evidence at trial, which showed
    that when the decedent had switched from unfiltered to filtered
    cigarettes, her smoking increased. (Ibid.)
    We believe the Whiteley court was mistaken, to the extent
    it considered this evidence in terms of the plaintiff’s failure of
    proof of causation, as opposed to the defendant’s proof of
    comparative fault. Prior to the California Supreme Court’s
    decision in Daly v. General Motors Corp. (1978) 
    20 Cal.3d 725
    , a
    plaintiff’s contributory negligence did not constitute a defense to
    an action in strict products liability, but the plaintiff’s
    assumption of risk was a complete defense. (Id. at p. 733.) In
    Daly, the court concluded that assumption of risk should in fact
    be considered as a form of comparative fault, which applies to
    strict liability. (Id. at pp. 736-738.) The argument that a
    defendant who designed and marketed a defective cigarette
    should not be liable because the plaintiff’s decedent would have
    smoked other manufacturers’ defective cigarettes is a form of
    32
    assumption of risk. It is therefore to be adjudicated as part of the
    affirmative defense of comparative fault.
    We observe that one of the federal cases on which Whiteley
    relied was Boerner v. Brown & Williamson Tobacco Co. (E.D. Ark.
    2000) 
    121 F.Supp.2d 1252
    , affirmed in part and reversed in part
    (8th Cir. 2001) 
    260 F.3d 837
    .11 In Boerner, the district court
    granted summary judgment to the defendant. In its analysis, the
    court stated that plaintiff suffered from a failure of proof on its
    design defect claim, in that “there is no evidence from which a
    jury could reasonably infer that [the plaintiff’s decedent] would
    have used any of the safer designs and thereby lessened the
    chances of contracting cancer. [The decedent] has testified that
    she . . . avoided filtered cigarettes because their low nicotine
    content did not satisfy her. This failure of proof entitles
    defendant to summary judgment on the defective design claim.”
    (Boerner, supra, 121 F.Supp.2d at p. 1255.) On appeal, the
    Eighth Circuit reversed, stating, “In reaching this conclusion, we
    have considered the district court’s conclusion that [the decedent]
    would not have used a safer alternative product because she
    disliked filtered cigarettes, and find it to be beside the point.
    Under Arkansas law, contributory negligence is no bar to
    recovery under a strict liability theory.” (Boerner v. Brown &
    Williamson Tobacco Corp. (8th Cir. 2001) 
    260 F.3d 837
    , 848.) We
    read the quoted language as the Eighth Circuit’s recognition that
    whether the decedent would have smoked safer cigarettes is a
    11    While Whiteley cited to the district court’s opinion in
    Boerner, it did not discuss the Eighth Circuit’s opinion reversing
    the district court, even though the Eighth Circuit’s opinion in
    Boerner predated Whiteley.
    33
    component of the decedent’s own negligence – an issue which, in
    California, is resolved under comparative fault principles.
    Here, the jury found that Major himself was 50 percent
    comparatively at fault, presumably based on Lorillard’s
    argument that he did not choose to quit smoking earlier and did
    not choose to smoke available no-tar cigarettes. The jury
    concluded that the cigarette manufacturers (taken together) and
    Major had been equally responsible for his lung cancer – the
    manufacturers for selling the defective cigarettes and Major for
    smoking them. Both are but-for causes of the cancer – had the
    cigarettes not been made or had Major not smoked them, the
    cancer would not have occurred. The cigarette manufacturers
    cannot transform the fact that Major’s choice to smoke their
    defective cigarettes was a but-for cause into an argument that
    their defectively designed cigarettes were not a cause at all.
    We also find persuasive Mrs. Major’s argument that, if we
    are truly to consider a hypothetical world in which Lorillard
    made only safe cigarettes, before we speculate as to what Major
    would have done, we would have to also assume that Lorillard
    informed the public that its prior cigarettes (and all other tar
    cigarettes) were unsafe. To the extent this sort of hypothetical
    inquiry is too speculative to support any reasonable conclusion, it
    simply confirms our conclusion that Major’s decision to smoke
    Lorillard’s defective cigarettes goes to the issue of his
    comparative negligence, and is not something plaintiff must
    address as part of her causation case-in-chief.
    5.    The Court Did Not Prejudicially Err in Excluding Evidence
    of Asbestos Exposure and Causation
    Although it was undisputed that Major had been exposed to
    asbestos, the jury concluded that asbestos exposure was not a
    34
    substantial factor in causing his cancer – apparently having been
    persuaded by the medical evidence that showed Major had not
    developed other asbestos-related disease. On appeal, Lorillard
    argues that the jury found no asbestos causation because the trial
    court prejudicially erred in excluding its evidence of asbestos
    exposure and causation.
    We review the trial court’s ruling on the admissibility of
    evidence for abuse of discretion. (Zhou v. Unisource Worldwide,
    Inc. (2007) 
    157 Cal.App.4th 1471
    , 1476.) A court’s error in
    excluding evidence is grounds for reversal only if the appellant
    demonstrates a miscarriage of justice, that is, that a different
    result would have been probable had the error not occurred. (Id.
    at p. 1480.)
    The excluded evidence falls into three categories:
    (1) allegations in the complaint; (2) admissions in interrogatories;
    and (3) assertions in asbestos bankruptcy claim forms.
    A.    Allegations of the Complaint
    On appeal, Lorillard contends the trial court erred in
    preventing it from introducing into evidence three particular
    allegations from Mrs. Major’s complaint: (a) that asbestos acted
    synergistically with the cigarette smoke; (b) that a person
    exposed to asbestos fibers and cigarette smoke would be at a
    much greater risk for lung cancer than if he had been exposed to
    either one alone; and (c) that Major’s cancer was caused by his
    exposure to both asbestos and tobacco. Lorillard argues these
    admissions should have been admissible at least for
    impeachment if not as substantive evidence.
    Procedurally, the issue was first raised in a motion in
    limine, by which plaintiff sought to preclude Lorillard from
    referring to the caption of the complaint, or any other allegations
    35
    of the complaint which would indicate Mrs. Major had sued
    additional defendants who are no longer in the case. Lorillard
    and the other tobacco defendants in the case responded that the
    allegations in Mrs. Major’s complaint are admissible as either
    evidentiary admissions or prior inconsistent statements. They
    argued, “[T]o the extent Plaintiff now claims that tobacco
    defendants are solely liable for Decedent’s death, Plaintiff’s
    allegations concerning asbestos nonparties, which are the same
    in both her previously dismissed . . . complaint and her operative
    Complaint, may be offered as evidentiary admissions or for
    impeachment.” Plaintiff replied that the tobacco defendants’
    premise was incorrect; she explained that she was not asserting
    that asbestos played no causal role in Major’s lung cancer. She
    had “not made any inconsistent statements and freely
    acknowledges that asbestos was a cause of decedent’s lung
    cancer.”
    At the hearing on the motion in limine, the court stated,
    “Nobody will be reading from any complaints in the case. That’s
    for sure. Those are lawyer words. So I would grant.” The court
    reasoned that allegations in the unverified complaint relating to
    causation were legal arguments of counsel, not factual assertions
    of plaintiff herself.
    Lorillard did not raise the issue during trial. It made no
    attempt to impeach the testimony of Mrs. Major with allegations
    from her complaint. In fact, Mrs. Major did not testify as to her
    belief regarding whether asbestos played a causal role in Major’s
    cancer; there was therefore nothing to impeach.
    We question whether Lorillard obtained a final ruling on
    the admissibility of the three precise complaint excerpts it now
    argues were improperly excluded. Although the court made the
    36
    broad statement that “[n]obody will be reading from any
    complaints in the case,” Lorillard did not draw the court’s
    attention to the three specific allegations nor present at trial its
    argument for their admissibility. Moreover, the court made its
    ruling based on plaintiff’s counsel’s representation that plaintiff
    “freely acknowledges that asbestos was a cause of decedent’s lung
    cancer.” Once plaintiff’s counsel had backed off from this
    somewhat in his opening statement, by saying that Major’s
    cancer was caused by cigarettes “and may have also been
    contributed to by asbestos,” Lorillard did not seek to reopen the
    issue.
    In any event, even if Lorillard obtained a final ruling on
    admissibility, and even if the trial court erred in excluding the
    excerpts, we conclude any error was not prejudicial. The first
    excerpt was that asbestos acted synergistically with cigarette
    smoke. The second was that a person exposed to asbestos and
    cigarette smoke would be at a much greater risk for lung cancer
    than if he had been exposed to asbestos or cigarettes alone. Both
    of these points were not controverted at trial, and in fact testified
    to by plaintiff’s lung pathology expert, Dr. Samuel Hammar. The
    third excerpt was plaintiff’s allegation that Major’s cancer was
    caused by both asbestos and cigarette exposure. While the causal
    role played by asbestos was disputed at trial, it was disputed
    because of medical evidence. It was clear that Major had been
    exposed to some amount of asbestos; but it was also clear that he
    had not suffered asbestos lung scarring, which is usually present
    when a lung cancer is caused by asbestos. Faced with this
    potential contradiction, Dr. Hammar testified that he would infer
    asbestos causation based on the significant asbestos exposure.
    Apparently the jury was not persuaded. That plaintiff herself
    37
    made the same inference in her complaint is even less convincing
    than the expert’s testimony, causing us to conclude that the
    exclusion of the evidence was not prejudicial.12
    B.    Interrogatory Answers
    We need not discuss at length the interrogatory answers
    Lorillard sought to introduce, the arguments for and against
    admission, and the court’s rulings. On appeal, defendant argues
    that the court erred in its ruling with respect to one interrogatory
    answer only, a lengthy response given by Mrs. Major explaining
    the nature and extent of Major’s exposure to asbestos. At trial,
    however, the parties reached an agreement with respect to that
    precise interrogatory: Lorillard could read a specified portion of
    the answer and, in light of the agreement, Lorillard agreed to
    “withdraw the proffer of the remainder of that interrogatory
    response” so there would be no issue on appeal.
    Nonetheless, Lorillard argues now that excluding the
    remainder of Mrs. Major’s answer was error. When plaintiff
    argued waiver in her respondent’s brief, Lorillard responded with
    the somewhat remarkable argument that plaintiff waived the
    right to rely on waiver – by failing to raise the waiver argument
    when Lorillard complained of the exclusion of the interrogatory
    answer in its motion for new trial. The authority on which
    Lorillard relies for this proposition, Federal Insurance Company
    v. Superior Court (1998) 
    60 Cal.App.4th 1370
    , 1375, does not
    support it. That case holds only that when a party argues on
    12    Nor is this “one of those relatively rare cases where a party
    can be bound by a judicial admission made in an unverified
    complaint.” (Womack v. Lovell (2015) 
    237 Cal.App.4th 772
    , 776.)
    Here, Lorillard was not misled by the so-called admission to
    think the issue of the extent of asbestos involvement in causation
    was not disputed at trial. The issue was, in fact, fully litigated.
    38
    appeal that its opponent waived the right to arbitrate by seeking
    to litigate in court, the party asserting waiver must have first
    raised the issue before the trial court. (Id. at p. 1375.) That is
    simply an application of the general proposition that an
    argument must be pursued at trial before it can be raised on
    appeal. Here, in open court, Lorillard withdrew its proffer of the
    remainder of the interrogatory answer and waived its right to
    pursue its admissibility on appeal; that withdrawal and waiver is
    not undone by Mrs. Major’s failure to mention the point in
    opposition to Lorillard’s new trial motion.
    C.    Bankruptcy Trust Claim Forms
    Many asbestos manufacturers have declared bankruptcy.
    (See Snyder, Todd R. & Siemer, Deanne C. (2005) 13 Am.Bankr.
    Inst. L. Rev. 801, Asbestos Pre-Packaged Bankruptcies: Apply
    The Brakes Carefully And Retain Flexibility For Debtors.) Mrs.
    Major initiated claims for Major’s death against some asbestos
    bankruptcy trusts. Lorillard argues that it was error to exclude
    certain excerpts from Mrs. Major’s claim forms submitted to
    those trusts. Mrs. Major responds, in part, that Lorillard has
    failed to identify the excerpts it sought to introduce – having
    presented only the unredacted stack of Mrs. Major’s bankruptcy
    trust claim forms on appeal – and thereby provided an
    inadequate record for appellate review. Lorillard replies that the
    excerpts it “contends should have been admitted are clear from
    the face of the [unredacted documents] and thus easily
    identified.” We review the unredacted documents with the
    understanding that it is not at all clear which excerpts Lorillard
    sought to introduce, and without knowing, if the excerpts had
    been admitted, which other portions the court would have
    allowed plaintiff to introduce. (Evid. Code, § 356 [where part of
    39
    an act, declaration, conversation, or writing is given in evidence
    by one party, the whole on the same subject may be inquired into
    by an adverse party.].)
    The issue was first raised in a motion in limine, by which
    Mrs. Major sought to exclude all references to all asbestos
    bankruptcy trust claim forms she submitted. Lorillard responded
    that, at the very least, some of the factual information in the
    claim forms would be admissible. Specifically, Lorillard argued
    that it “should be able to cross-examine [plaintiff’s expert
    witnesses] at trial with documents demonstrating that not only
    was decedent exposed to asbestos, plaintiff believed that his lung
    cancer was caused by this exposure . . . .” At the hearing on the
    motion, the court tentatively decided to exclude the evidence of
    plaintiff’s belief as to causation, on the grounds that whatever
    Mrs. Major believed to be the cause was not relevant. However, it
    tentatively denied the motion with respect to factual statements
    in the forms regarding Major’s asbestos exposure. The court
    directed defendant to “give the court and opposing counsel a
    heads-up” before attempting to use any particular bankruptcy
    trust claim forms in cross-examination, so that any specific
    objection could be addressed.
    Lorillard did not attempt to cross-examine any of plaintiff’s
    witnesses with the bankruptcy trust claim forms. Lorillard did
    not return to the issue of bankruptcy trust claim forms at all
    until after plaintiff had rested. After reading some of Mrs.
    Major’s interrogatory answers to the jury, Lorillard sought to
    admit into evidence excerpts from the bankruptcy trust claim
    forms. The trial court conceded that it had previously ruled that
    the factual allegations in the forms were relevant, but noted that
    Lorillard had failed to lay a foundation for their admissibility by
    40
    establishing that Mrs. Major saw and signed the forms. More
    than that, the court stated the evidence was cumulative, unless
    there were different factual statements in the bankruptcy trust
    claim forms than those made in the interrogatory answers
    already admitted. Plaintiff’s counsel represented that Lorillard
    had not identified anything different and plaintiff’s counsel
    believed that everything in the redacted exhibit was already in
    evidence. Lorillard’s counsel said nothing. The court then ruled
    that the exhibit was cumulative.
    On appeal, Lorillard argues that the excerpts it sought to
    admit were not cumulative. It states, “The claim forms contained
    detailed information about the dates of exposure, the places of
    exposure, and the activities that gave rise to the exposure. None
    of this factual information was introduced in another form at
    trial.” This argument is made with no citation to the record, and
    without identification of the specific information Lorillard sought
    to introduce. It is only in its reply brief that Lorillard for the first
    time purports to identify specific information in the claim forms
    which was not otherwise introduced at trial.
    We have reviewed the unredacted exhibit and conclude
    that, on the whole, the claim forms paint a very different picture
    than Lorillard asserts. The forms are, in fact, standard forms,
    which are to be filled out by the claimant. One of the questions
    asked on the form is “Was [the] death asbestos related?” While
    plaintiff answered “yes” on some of the forms, she left the
    question blank on several others.13 Many of the forms also fail to
    answer the question regarding Major’s asbestos exposure. Those
    13     One claim form includes a “Questions-Problems” page that
    says, “No meds stating LC [presumably: lung cancer] caused by
    asb. Expo” and indicates the claim was withdrawn.
    41
    that discuss asbestos do so with little detail, stating, for example,
    “Shipyard workers doing construction, overhaul and repair.”
    Another states that Major “[o]versaw operation of engine rooms
    and inspected piping systems & boilers.”
    Other than specifically identifying the manufacturers of
    asbestos to which Major was exposed – a fact which has no
    relevance to causation – Lorillard has not identified any fact
    regarding Major’s asbestos exposure which appears in these
    claim forms and was not otherwise already in evidence. As such,
    on this record, the court did not abuse its discretion in finding the
    excerpts cumulative.
    To the extent Lorillard also argues the court erred in not
    admitting the claim forms’ assertions that Major’s death was
    asbestos-related, we conclude – as we did with respect to
    identical allegations in the complaint – that any error was not
    prejudicial. Particularly given that Mrs. Major did not assert the
    death was asbestos-related across all of the claim forms, and that
    any such assertion was only Mrs. Major’s lay opinion, the
    admission of these assertions would have been of minimal
    significance in light of Mrs. Major’s lung pathology expert’s
    inference of asbestos causation, an inference which the jury
    rejected.
    6.     Plaintiff’s Cross-Appeal: The Court Did Not Err in
    Refusing to Award Prejudgment Interest For the Time the
    Dismissal Agreement Was in Effect
    In her cross-appeal, Mrs. Major contends the court erred by
    denying her prejudgment interest for the period the Dismissal
    Agreement was in effect.
    Mrs. Major claimed a right to prejudgment interest under
    Civil Code section 3291. That provision states, in pertinent part,
    42
    “If the plaintiff makes an offer pursuant to Section 998 of the
    Code of Civil Procedure which the defendant does not accept prior
    to trial or within 30 days, whichever occurs first, and the plaintiff
    obtains a more favorable judgment, the judgment shall bear
    interest at the legal rate of 10 percent per annum calculated from
    the date of the plaintiff’s first offer pursuant to Section 998 of the
    Code of Civil Procedure which is exceeded by the judgment, and
    interest shall accrue until the satisfaction of judgment.”
    Mrs. Major made no section 998 offer in the actual case
    that prompted this appeal – the second case. She did make an
    offer during the First Action. The only way in which the offer she
    made in the First Action could justify any award of prejudgment
    interest in this case is by the terms of the Dismissal Agreement,
    by which the parties agreed, among other things, that “[a]ll prior
    . . . [Code of Civil Procedure section] 998 offers will be tacked onto
    and applicable to, any refiled Action.” Because of this language,
    the plaintiff’s section 998 offer from the First Action became
    applicable to the second, and justified an award of prejudgment
    interest.
    The question then becomes what is the period when
    pretrial interest legally accrued. Interpreting the language of the
    Dismissal Agreement, the trial court awarded interest accruing
    during the First Action and during the current action, but not for
    the period in which the Dismissal Agreement was in effect. On
    appeal, plaintiff challenges this ruling, contending the terms of
    the Dismissal Agreement unambiguously provided for
    prejudgment interest to accrue during the period of the Dismissal
    Agreement. In the alternative, plaintiff relies on extrinsic
    evidence, in the form of the declaration of her attorney involved
    43
    in negotiating the Dismissal Agreement, as to his understanding
    of the intent of the parties.
    “The language of a contract is to govern its interpretation,
    if the language is clear and explicit, and does not involve an
    absurdity.” (Civ. Code, § 1638.) “ ‘[A] contract must be
    interpreted so as to give effect to the mutual intention of the
    parties, and the whole of a contract is to be taken together, so as
    to give effect to every part, if reasonably practicable, each clause
    helping to interpret the other.’ [Citation.]” (Gray1 CPB, LLC v.
    Kolokotronis (2011) 
    202 Cal.App.4th 480
    , 486-487.)
    Here, we consider two relevant provisions of the Dismissal
    Agreement. First, the agreement states its purpose is to
    “comprehensively freeze the rights and remedies available to the
    parties as presently contained in the Action at the point of
    dismissal, as permitted by law.” Second, the parties included a
    specific provision as to costs and section 998 offers, which
    provided, “If plaintiff refiles the Action, all recoverable costs
    associated with the Action carry over to the refiled Action and
    can be thereafter claimed by a prevailing party subject to a
    motion for costs subsequent to a judgment. All prior costs and
    [Code of Civil Procedure section] 998 offers will be tacked onto
    and applicable to, any refiled Action.”
    There is only one way to interpret this unambiguous
    language. The agreement intended to “comprehensively freeze
    the rights and remedies . . . at the point of dismissal.” This does
    not allow for the continued accrual of prejudgment interest – a
    type of remedy – while the action remained dismissed. (See Civ.
    Code, § 3291 [under which plaintiff sought prejudgment interest
    in this case], found in Article 2 “Interest as Damages” of Chapter
    1 “Damages in General” of Title 2 “Compensatory Relief” of
    44
    Division 4 “General Provisions” of the Civil Code.) That remedy,
    among others, was frozen. The specific provision relating to costs
    and section 998 offers is in agreement. Prior costs and section
    998 offers are to be “tacked onto” the refiled action; the costs do
    not continue to accrue, and the offers are not outstanding until
    the action is refiled. The trial court did not err in refusing to
    award prejudgment interest during the period of the Dismissal
    Agreement.
    DISPOSITION
    The judgment is affirmed in all respects. Plaintiff is to
    recover her costs on appeal.
    RUBIN, ACTING P. J.
    WE CONCUR:
    FLIER, J.
    *
    SORTINO, J.
    *     Judge of the Los Angeles Superior Court, assigned by the
    Chief Justice pursuant to article VI, section 6 of the California
    Constitution.
    45