Cooper, Robert E. v. Nelson & Company ( 2000 )


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  • In the
    United States Court of Appeals
    For the Seventh Circuit
    Nos. 98-4169, 98-4222
    ROBERT E. COOPER and MARIANN POGGE, Trustee
    of the Bankruptcy Estate of Robert E. Cooper,
    Plaintiffs-Appellants, Cross-Appellees,
    v.
    CARL A. NELSON & CO., a corporation,
    Defendant-Appellee, Cross-Appellant.
    Appeal from the United States District Court
    for the Central District of Illinois.
    No. 94-1274--Joe B. McDade, Chief Judge.
    Argued September 16, 1999--Decided March 7, 2000
    Before RIPPLE, MANION and DIANE P. WOOD, Circuit
    Judges.
    RIPPLE, Circuit Judge. Robert E. Cooper/1
    brought this personal injury action against Carl
    A. Nelson & Co. ("Nelson"), seeking damages for
    an accident at a construction site. The case
    proceeded to trial, and a jury verdict was
    entered for Nelson. For the reasons set forth in
    the following opinion, we reverse the judgment of
    the district court and remand the case to the
    district court for proceedings consistent with
    this opinion.
    I
    BACKGROUND
    A.   Facts
    Nelson was the general contractor at the
    construction of a new Wal-Mart in Macomb,
    Illinois. Mr. Cooper was an electrician working
    for one of Nelson’s subcontractors. Workers at
    the site were encouraged by Nelson to park in a
    vacant lot at the existing Wal-Mart adjacent to
    the construction site./2 This arrangement
    required that they traverse a drainage ditch to
    access the construction trailers. The bottom of
    the ditch was spanned by planks, so that the
    construction workers would not have to walk
    through the bottom of the ditch. Rather, they had
    to walk down an incline and then across the
    planks and up an incline on the other side. The
    incline down to the planks became muddy whenever
    it rained, and it was difficult to maintain
    footing. Consequently, Nelson laid pallets in
    this area to afford workers additional traction.
    The exact nature of the plank bridge and the
    condition of the bottom of the ditch were
    subjects of some dispute in the district court.
    On July 7, 1992, Mr. Cooper slipped and fell
    while traversing this drainage ditch. He claims
    to have been knocked unconscious in his fall, and
    does not recall exactly where he was when he
    fell. He testified that it was raining at the
    time of his accident and that both the ditch and
    the planks were wet and slippery.
    B.   Proceedings in the District Court
    Mr. Cooper’s initial amended complaint alleged
    that he fell on the planks over the bottom of the
    ditch. During discovery, he acknowledged that he
    was not certain about the exact place of his
    fall. He did not, however, further amend his
    complaint to reflect this uncertainty. In ruling
    on a motion for summary judgment filed by Nelson,
    the district court determined that Mr. Cooper’s
    claim could not be sustained on the theory that
    he had fallen on the planks themselves and,
    therefore, granted summary judgment for Nelson.
    The district court noted, however, that the
    evidence produced at discovery suggested that Mr.
    Cooper had fallen on the incline leading down
    toward the location of the planks across the
    bottom of the ditch. The district court therefore
    vacated its grant of summary judgment and allowed
    Mr. Cooper to amend his pleadings to allege that
    he had fallen on the incline. In the new amended
    pleading, Mr. Cooper alleged that he had fallen
    on the muddy incline approaching the planks in
    the ditch, not on the planks themselves.
    Nelson later sought, through a motion in limine,
    to preclude at trial any mention of Mr. Cooper’s
    having fallen on the planks. The district court
    granted the motion. The district court noted that
    the allegation in the second amended complaint
    was that Mr. Cooper fell on the incline
    approaching the planks and ruled that Mr. Cooper
    ought to be bound at trial by that allegation.
    Mr. Cooper sought to introduce at trial the
    deposition testimony of medical professionals who
    had examined him. Among those experts were Dr.
    William Richardson, a specialist in internal
    medicine affiliated with the St. Louis University
    School of Medicine; Dr. Emre Kokmen, a board
    certified neurologist at the Mayo Clinic in
    Rochester, Minnesota; and Dr. Joshua Warach, a
    board certified neurologist in Springfield,
    Illinois. After a hearing to determine the
    admissibility of this testimony under Daubert v.
    Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
    (1993), the district court decided that the
    testimony was not admissible because the
    physicians had an inadequate foundation for
    evaluating the cause of Mr. Cooper’s injury.
    Specifically, the district court pointed to the
    physicians’ finding that Mr. Cooper’s 1992 fall
    was the cause of his chronic pain syndrome and
    other ailments. That finding was based on Mr.
    Cooper’s own statements to the physicians that he
    had fallen in 1992, that before his fall he had
    been healthy, and that after his fall his
    physical condition had deteriorated.
    Mr. Cooper also argued that, in addition to the
    medical experts, Robert Bunch, a carpenter for
    Nelson, should have been allowed to testify about
    when a proper man bridge was built across the
    ditch. Terry Lox, a supervisor for Nelson, was
    allowed to testify that at the time of Mr.
    Cooper’s accident there was a man bridge across
    the ditch, not merely some planks. Bunch would
    have testified that he assisted in the
    construction of a proper bridge after the
    accident. The district court excluded the
    testimony as evidence of a subsequent remedial
    measure. See Fed. R. Evid. 407. The district
    court also excluded a report from the Social
    Security Administration finding that Mr. Cooper
    was entitled to total disability benefits.
    At the close of Mr. Cooper’s case, the district
    court granted Nelson summary judgment on Mr.
    Cooper’s claim that Nelson had willfully and
    wantonly caused his injury. The case proceeded on
    Mr. Cooper’s negligence theory. After the
    presentation of Nelson’s case, the district court
    instructed the jury that Nelson’s duty was that
    of a landowner. Mr. Cooper objected, claiming
    that the contractor should not have been held to
    the "passive" duty of care of a landowner, but
    rather to a more active duty of ordinary care.
    The jury returned a verdict for Nelson.
    II
    DISCUSSION
    Mr. Cooper raises six distinct issues on appeal.
    He argues that the district court incorrectly
    granted summary judgment on the issue of the
    place of the fall, that it administered faulty
    jury instructions, and that it should not have
    dismissed his willful and wanton injury claim.
    The other three challenges relate to the district
    court’s evidentiary decisions: the rejection of
    Robert Bunch’s testimony, the refusal to admit
    the Social Security Administration report, and
    the decision under Daubert to exclude his
    proffered medical testimony. We consider these
    contentions in turn.
    A.   Mr. Cooper’s Fall
    Mr. Cooper cannot remember whether he fell on
    the slope approaching the planks over the ditch
    or on the planks themselves. He originally
    claimed that he slipped on the planks, but the
    district court granted summary judgment for
    Nelson on the ground that the evidence did not
    support such an allegation but rather tended to
    show that he slipped on the incline approaching
    the location of the planks. Mr. Cooper then
    amended his pleading to state that he had slipped
    on the incline. Later, the court granted Nelson’s
    motion in limine to prevent Mr. Cooper from
    offering testimony suggesting that he slipped on
    the planks.
    Before this court, Mr. Cooper submits that the
    district court erred when it decided to take the
    issue of whether he fell on the planks away from
    the jury on the ground that there was no evidence
    to support a verdict for Mr. Cooper on that
    theory. First, contends Mr. Cooper, the district
    court ought not to have granted summary judgment
    to Nelson on the ground that the amended
    complaint alleged solely that Mr. Cooper had
    fallen on the planks, not the incline. Second,
    continues Mr. Cooper, this initial error was
    compounded when the district court, although
    allowing an amendment of the pleadings, refused,
    by granting the motion in limine, to allow the
    jury to consider the possibility that he fell on
    the planks. Mr. Cooper admits that his second
    amended complaint, filed with leave of court
    after the district court had granted summary
    judgment on the first amended complaint, alleged
    only that he had slipped on the incline, not on
    the planks. He asks us to take into account,
    however, that this complaint was filed only after
    the district court had ruled that the evidence
    would not support a jury finding that he had
    slipped on the planks. Therefore, he submits, its
    content was governed by the law of the case as
    established in the district court’s earlier
    ruling.
    Nelson replies that there was no evidence to
    establish that Mr. Cooper slipped on the planks
    and that the district court was therefore
    justified in ruling as it did. It argues that, in
    response to Nelson’s summary judgment motion, Mr.
    Cooper admitted that he had not fallen on the
    planks but on the incline leading to the planks.
    Indeed, even on this appeal, argues Nelson, Mr.
    Cooper argues only that it is "just as likely"
    that he fell on the planks as on the incline.
    We believe that the district court should not
    have precluded the jury from considering the
    possibility that Mr. Cooper fell on the planks.
    In the first amended complaint, Mr. Cooper
    alleged, in more detail than was required by the
    Rules, that he had "slipped among planks while
    carrying materials for use on the job site
    walking down the incline approaching the six foot
    deep ditch and then fell onto the plank boards
    which were inadequate to hold him and then onto
    pallets laying in the ditch six feet below." R.85
    at 9-10. When this allegation was challenged by
    Nelson on summary judgment, Mr. Cooper admitted
    that "[h]e did not fall on the planks. He fell
    among the pallets located on the incline."/3 In
    the very same document, however, indeed, in the
    preceding paragraph, Mr. Cooper gave a more
    plenary description of his recollection of the
    fall:
    9. He cannot say exactly where he fell because
    he was knocked out by the fall. He remembers
    coming off the flat ground getting ready to go
    down the ditch; he remembers starting down the
    incline. He could have been on the 2 by 10 planks
    when he fell, but he cannot honestly answer yes
    or no. (Cooper dep. 32)./4
    The district was correct when it concluded that
    Mr. Cooper’s initial amended complaint had been
    too specific when it alleged only that he had
    slipped on the incline./5 However, we think that
    the district court went too far in its criticism
    when it further concluded that the evidence of
    record, including Mr. Cooper’s own deposition
    testimony, precluded the jury from considering
    the possibility that he fell among the planks.
    This misapprehension on the part of the district
    court was partially corrected when the court
    allowed Mr. Cooper to amend his complaint.
    Unfortunately, as we see it, even at this stage
    the district court’s actions placed, as a
    practical matter, inappropriate restrictions on
    Mr. Cooper’s effort to replead. The critical
    document is the January 16, 1996 summary judgment
    order; to get back into court, Mr. Cooper had to
    overcome the deficiencies perceived by the
    district court in his first amended complaint.
    That summary judgment order was the only guidance
    Mr. Cooper had on how he might revive his case.
    In that document, the district court had not only
    rejected the possibility that the jury might
    conclude that he fell on the planks, it also
    expressed clearly its own view of what the
    evidence might show:
    Defendant contends that Plaintiff cannot show
    proximate cause here because there is no evidence
    that the planks over the ditch had anything to do
    with Plaintiff’s injury. Plaintiff does nothing
    to refute this claim. Rather, Plaintiff merely
    changes the relevant facts in his Statement of
    Disputed Facts, asserting that "[h]e did not fall
    on the planks. He fell among the pallets located
    on the incline." If the Court were to focus upon
    these newfound facts, it would hold that the
    testimony evinced during discovery is enough to
    preclude summary judgment here. The theory would
    be that Defendant’s failure to remedy the unsafe
    condition of the entire pathway (the inclines,
    the pallets and the planks) during rainy periods
    caused Cooper to traverse the incline on the mud,
    thus causing him to slip and injure himself.
    R.105 at 19-20 (emphasis added). As we have noted
    earlier, this statement of the district court was
    Mr. Cooper’s only guidance on how to restart his
    case. From our review of the record, we must
    conclude, however, that the district court’s
    estimation of Mr. Cooper’s case in that summary
    judgment order rested on a misapprehension of the
    record. For instance, although the court
    correctly noted that "He testified that he fell
    somewhere between the beginning of the slope to
    halfway down the slope," Mr. Cooper also said
    that he fell somewhere "between the crest of the
    slope and halfway across the planks." Cooper
    deposition at 39 (quoting the original
    complaint). We cannot say that Mr. Cooper’s
    deposition testimony is accurately reported in
    the court’s statement that "Plaintiff knows that
    he fell somewhere between the top of the incline
    and half way down." R.105 at 20. Similarly
    problematic is the district court’s assertion
    that "It is undisputed that Plaintiff did not
    slip or fall on the planks themselves." Id. at
    21. Mr. Cooper said specifically that he "could
    have been" on the planks when he fell. Cooper
    deposition at 32. His testimony was at least
    partially corroborated by the deposition
    testimony of his brother, whose testimony as to
    Mr. Cooper’s position after the fall at least
    allowed the inference that he had fallen backward
    from the planks onto the pallets.
    As a general proposition, a district court has
    the discretion to treat an allegation in a
    party’s pleading as a judicial admission. See
    Taylor v. Monsanto Co., 
    150 F.3d 806
    , 809 (7th
    Cir. 1998); Schott v. American Honda Motor Co.,
    
    976 F.2d 58
    , 61 (1st Cir. 1992). A judicial
    admission trumps evidence. See Murrey v. United
    States, 
    73 F.3d 1448
    , 1455 (7th Cir. 1996);
    Keller v. United States, 
    58 F.3d 1194
    , 1199 n.8
    (7th Cir. 1995). Here, however, it would be
    inappropriate to treat the allegations in the
    second amended complaint as a binding admission
    that ought to bind Mr. Cooper in the subsequent
    trial. The allegations of that second amended
    complaint are grounded in the district court’s
    earlier ruling that the evidence would not
    support a jury finding that Mr. Cooper fell on
    the planks, a ruling we think was based on a
    misapprehension of the record. As we have noted
    above, we believe that the evidence of record
    made the exact place of the fall a jury issue
    that ought not to have been excluded from the
    trial of this matter.
    Nelson argues that we should not consider Mr.
    Cooper’s argument that he fell on the planks
    rather than the incline. Nelson contends that, if
    Mr. Cooper wanted to preserve the option of
    making such an argument, he should have appealed
    the district court’s initial grant of summary
    judgment rather than seeking permission to
    replead in conformity with the district court’s
    view of the evidence. Because, in any event, the
    judgment under review cannot stand due to
    instructional and evidentiary error, we believe
    that, in a retrial of the case, none of the
    policy concerns animating the law of the case
    doctrine require that the district court’s
    initial misapprehension of the evidence ought to
    control. See Alston v. King, 
    157 F.3d 1113
    , 1116
    (7th Cir. 1998) (holding that the law of the case
    is only a presumption whose strength varies with
    circumstances); see also United States v. United
    States Smelting Co., 
    339 U.S. 186
    , 199 (1950).
    B. Nelson’s Duty of Care and the
    Resulting Jury Instructions
    In this diversity case, the nature of Nelson’s
    duty to Mr. Cooper is governed by Illinois law,
    and in Illinois the existence of a duty is a
    question of law. See Reid v. Norfolk & W. Ry.
    Co., 
    157 F.3d 1106
    , 1110 (7th Cir. 1998);
    Rodriguez v. Norfolk & W. Ry. Co., 
    593 N.E.2d 597
    , 607 (Ill. App. Ct. 1992). We review such
    questions de novo. See Khan v. Gallitano, 
    180 F.3d 829
    , 837 (7th Cir. 1999). Although the
    existence of a duty must be determined as a
    matter of law, the question of whether there was
    a breach of that duty and an injury proximately
    caused by that breach are questions of fact for
    the jury. See Rodriguez, 
    593 N.E.2d at 607
    . An
    error in jury instructions therefore can be
    reversible error if it misinforms the jury about
    the applicable law. See Bruno v. City of Crown
    Point, 
    950 F.2d 355
    , 360 (7th Cir. 1991), cert.
    denied, 
    505 U.S. 1207
     (1992); Schranz v. Halley,
    
    448 N.E.2d 601
    , 603 (Ill. App. Ct. 1983).
    The district court’s instructions to the jury
    asked it to consider whether Nelson had exercised
    reasonable care, the standard applied to
    landowners in Illinois for injuries occurring on
    their land. See Lewis E. v. Spagnolo, 
    710 N.E.2d 798
    , 815 (Ill. 1999); Ward v. K-Mart Corp., 
    554 N.E.2d 223
    , 229 (Ill. 1990). Illinois has adopted
    the rules set forth in sections 343 and 343A of
    the Restatement (Second) of Torts regarding the
    duty of possessors of land to their invitees.
    Therefore, as a general rule, a landowner in
    Illinois is only liable for harm caused to
    invitees by a condition on his land if he:
    (a) knows or by the exercise of reasonable care
    would discover the condition, and should realize
    that it involves an unreasonable risk of harm to
    such invitees, and
    (b) should expect that they will not discover or
    realize the danger, or will fail to protect
    themselves against it, and
    (c) fails to exercise reasonable care to protect
    them against the danger.
    Genaust v. Illinois Power Co., 
    343 N.E.2d 465
    ,
    472 (Ill. 1976) (quoting Restatement (Second) of
    Torts sec. 343); see also Deibert v. Bauer Bros.
    Const. Co., 
    566 N.E.2d 239
    , 241 (Ill. 1990)
    (quoting Genaust); Ward, 
    554 N.E.2d at 229
    (same). As a general rule, therefore, landowners
    in Illinois are not liable to invitees when
    invitees should have realized the danger and
    could have protected themselves against it; the
    landowner’s duty is only to rid the land of
    unreasonable dangers. As the Supreme Court of
    Illinois pointed out in Deibert, this general
    rule is subject to an exception set forth in sec.
    343A of the Restatement. See 
    566 N.E.2d at 243
    .
    That section states:
    A possessor of land is not liable to his
    invitees for physical harm caused to them by any
    activity or condition on the land whose danger is
    known or obvious to them, unless the possessor
    should anticipate the harm despite such knowledge
    or obviousness.
    Restatement (Second) of Torts sec. 343A(1), at
    218 (1965), quoted in 
    566 N.E.2d at 241
    . In the
    case before us, the general contractor, Nelson,
    stands in the place of the landowner and, for
    purposes of our analysis, is the possessor of the
    land. See Deibert, 
    566 N.E.2d at 240-43
    .
    We think that two considerations lead to the
    conclusion that the duty of Nelson was not simply
    that set forth in sec. 343 of the Restatement
    (Second) of Torts. First, as the Supreme Court of
    Illinois made clear in Deibert, the duty of the
    landowner is set forth not only in sec. 343 but
    also in the exception to that general rule in
    sec. 343A. See 
    id. at 241-42
    . This latter
    provision requires that the possessor of the land
    remedy an activity or condition on the land
    which, although known and obvious to the invitee,
    may still cause that individual harm. Here,
    Nelson had undertaken to construct a walkway of
    pallets to permit the workers to traverse the
    incline and a bridge of planks to cross the
    bottom of the ditch. According to the evidence of
    record, the jury was entitled to believe Mr.
    Cooper’s allegations that the wooden walkway had
    become so muddy that he was required to walk down
    the unprotected incline which also posed a danger
    because of its muddy condition. The jury was
    entitled to consider whether the condition of the
    premises was such that Nelson was required to
    anticipate that workers such as Mr. Cooper might
    avoid the mud on the pallets and consider the
    unprotected incline to be at least as safe a
    passage as the one prepared by Nelson.
    Second, the contractual provision governing the
    relationship of the general contractor, Nelson,
    to the subcontractor also appears to have set a
    standard of care somewhat higher than the one set
    forth in the Restatement sections. The
    contractual provision states that the contractor
    "shall take reasonable precautions for safety of
    . . . employees on the Work," Appellant’s Br. at
    21. In interpreting this section, we must be
    careful not to interpret the contractual
    provisions in such a way as to expand the duties
    of the contractor beyond the scope of the duties
    described in the contract. See American States
    Ins. Co. v. A.J. Maggio, Inc., 
    593 N.E.2d 1083
    ,
    1086 (Ill. App. Ct. 1992)./6 In American States,
    the Illinois court determined that a contractual
    provision that imposed a duty to keep the work
    area in reasonably safe condition imposed no
    greater duty on the possessor of the land than
    the common law duty stated above. By contrast,
    the contractual duty here places the affirmative
    duty on the possessor of the land "to take
    reasonable precautions" for the safety of the
    workers. In our view, the jury was entitled to
    consider whether Nelson had breached its
    obligation by the manner in which the pallet
    walkway was constructed or by permitting its
    condition to deteriorate.
    In Ward, the Supreme Court of Illinois noted
    that, in ascertaining whether a possessor of land
    owes a duty of care to an invitee, a court must
    take into consideration the magnitude of the
    burden of guarding against the injury, and the
    consequences of placing that burden upon the
    defendant, as well as the likelihood of injury
    and the possible serious nature of such an
    injury. See 
    554 N.E.2d at 226-27
    . Here, the
    existence of a duty of care cannot be decided in
    abstracto but must take into account the
    relationship of the contractor to the
    subcontractor and the undertakings of the former
    for the employees of the latter. Here, the
    allegation is that the prime contractor breached
    its obligation to these employees, including Mr.
    Cooper, by failing to maintain a proper walkway
    to the job site, by permitting it to become
    covered with quantities of mud that rendered it
    useless, and by requiring the workers to try
    other ways of making the same passage. In our
    view, these allegations implicate the policy
    concerns noted by the Supreme Court of Illinois
    in much the same way as those cases that
    articulate a higher standard of care for
    landowners who place a foreign substance on their
    land. See Donoho v. O’Connell’s, Inc., 
    148 N.E.2d 434
    , 439 (Ill. 1958); Wind v. Hy-Vee Food Stores,
    Inc., 
    650 N.E.2d 258
    , 262 (Ill. App. Ct. 1995).
    On   the record before us, therefore, we must
    conclude   that the jury was not instructed
    properly   with respect to whether Nelson had
    breached   its duty of care./7
    C.   Mr. Cooper’s Willful and Wanton Claim
    At the close of Mr. Cooper’s evidence, the
    district court granted a directed verdict for
    Nelson on Mr. Cooper’s willful and wanton claims.
    We review de novo the decision to grant a
    directed verdict, reviewing the evidence in the
    light most favorable to Mr. Cooper. See Payne v.
    Milwaukee County, 
    146 F.3d 430
    , 432 (7th Cir.
    1998); Bowlen v. United States, 
    956 F.2d 723
    , 727
    (7th Cir. 1992).
    Because we believe that Mr. Cooper ought to be
    permitted to argue that he fell on the planks
    over the ditch, not on the slope approaching the
    planks, we also believe that the directed verdict
    on the issue of whether Nelson willfully and
    wantonly caused his injury cannot stand at this
    point in the litigation. The district court will
    have to revisit this matter in due course. To
    prevail on this theory, Mr. Cooper must show
    either that Nelson actually or deliberately
    intended to harm him, or that Nelson was utterly
    indifferent to or showed a conscious disregard
    for his personal safety. See Pfister v. Shusta,
    
    657 N.E.2d 1013
    , 1016 (Ill. 1995); Bowden v. Cary
    Fire Protection Dist., 
    710 N.E.2d 548
    , 552 (Ill.
    App. Ct. 1999). Relying on the testimony of other
    construction workers at the site, he argues that,
    when a landowner knows of a dangerous condition
    and fails to remedy it, he has exhibited a
    reckless disregard for the safety of others that
    leads to his liability for willful or wanton
    injuries. See Schneiderman v. Interstate Transit
    Lines, 
    69 N.E.2d 293
    , 300 (Ill. 1946). As we have
    held in the preceding section, Mr. Cooper ought
    to be permitted to argue that he slipped not on
    the incline but on the planks. Therefore, he
    should not be foreclosed from arguing that
    Nelson’s decision to utilize this configuration
    rather than a man bridge constituted willful or
    wanton behavior.
    D.   Testimony of Robert Bunch
    Although the matter may not arise again in the
    same context, we shall address, for the sake of
    judicial economy, the district court’s decision
    not to admit the testimony of Robert Bunch that a
    man bridge was built over the area after Mr.
    Cooper’s fall.
    The district court admitted testimony from Terry
    Lox, a Nelson supervisor, that on the day of Mr.
    Cooper’s injury, the ditch was spanned not by
    planks, but by a man bridge. The court instructed
    the jury that it was to consider Lox’s testimony
    only for the purposes of determining Lox’s
    credibility. The testimony was limited because,
    in light of the determination that Mr. Cooper
    slipped on the incline, the exact nature of the
    bridge at the time of the incident was
    irrelevant. Mr. Cooper then sought to contradict
    Lox through testimony by Robert Bunch, another
    worker at the site, that Bunch assisted Lox with
    the construction of a bridge after Mr. Cooper’s
    injury. The district court would not allow this
    testimony pursuant to Federal Rule of Evidence
    407, which bars testimony about subsequent
    remedial measures for the purposes of proving
    negligence. The district court’s rulings on
    evidentiary decisions are reviewed for an abuse
    of discretion. See White v. United States, 
    148 F.3d 787
    , 791 (7th Cir. 1998); United States v.
    Beyer, 
    106 F.3d 175
    , 179 (7th Cir. 1997).
    The district court did not abuse its discretion
    in excluding Bunch’s testimony. There was nothing
    to prevent Mr. Cooper from contradicting Lox’s
    story, or attacking Lox’s credibility, by
    introducing evidence that there was no bridge at
    the time of Mr. Cooper’s injury. At Bunch’s
    deposition, Mr. Cooper’s counsel did not ask
    Bunch to describe the condition of the ditch
    before the accident, which would have been
    permissible. Instead, he asked Bunch to describe
    his assistance with the construction of a bridge
    after the accident, which was not. The district
    court did not abuse its discretion in excluding
    the evidence.
    E. The Social Security Administration
    Report
    Mr. Cooper sought to introduce a Social Security
    Administration report, pursuant to Federal Rule
    of Evidence 803(8)(C), the hearsay exception for
    government reports. An administrative law judge
    of the Social Security Administration determined
    that Mr. Cooper’s chronic pain syndrome entitled
    him to total disability benefits. His counsel
    explained that he wished to argue to the jury
    that Mr. Cooper’s eligibility for social security
    disability payments demonstrated the severity of
    his injury and, therefore, was relevant to the
    measure of damages. The district court refused to
    admit the report into evidence, finding it both
    irrelevant and more prejudicial than probative
    pursuant to Federal Rule of Evidence 403. When
    reviewing the district court’s evidentiary
    decisions, we employ an abuse of discretion
    standard and consequently give great deference to
    the trial court. See Merriweather v. Family
    Dollar Stores of Ind., 
    103 F.3d 576
    , 580 (7th
    Cir. 1996); Littlefield v. McGuffey, 
    954 F.2d 1337
    , 1342 (7th Cir. 1992).
    We have noted that the district court retains
    significant discretion to exclude administrative
    findings that meet the standards of Federal Rule
    of Evidence 803(8)(C). See Halloway v. Milwaukee
    County, 
    180 F.3d 820
    , 827 n.9 (7th Cir. 1999);
    see also Johnson v. Yellow Freight Sys., 
    734 F.2d 1304
    , 1309 (8th Cir.) ("In our view, it would be
    ill-advised to shackle the discretion of trial
    judges with a rule of per se admissibility."),
    cert. denied, 
    469 U.S. 1041
     (1984). Evidence
    admissible under Rule 803(8)(C) is still subject
    to exclusion on other grounds, such as relevancy.
    See Beech Aircraft v. Rainey, 
    488 U.S. 153
    , 167-
    68 (1988); Paolitto v. John Brown E.&C., Inc.,
    
    151 F.3d 60
    , 64 (2d Cir. 1998). The district
    court here decided that a finding that Mr. Cooper
    met the Social Security Administration’s
    definition of totally disabled was irrelevant
    because the jury would be applying a different
    standard. Our review of the record leaves us with
    some doubt, however, as to whether the district
    court and counsel miscommunicated about the
    narrow purpose for which Mr. Cooper sought
    admission of the document. Even on this narrow
    ground, the district court may have believed that
    any probative value of the report was outweighed
    by its potential to confuse the jury. If the
    issue arises again on remand, the district court
    is free to revisit the issue.
    F.   Medical Expert Testimony
    At trial, Mr. Cooper attempted to establish that
    he was suffering from chronic pain syndrome
    ("CPS") and that this condition was caused by his
    fall. He offered the testimony of three medical
    expert witnesses to substantiate his submission.
    The three witnesses--Dr. William Richardson, Dr.
    Emre Kokmen, and Dr. Joshua D. Warach--were
    prepared to testify about the CPS suffered by Mr.
    Cooper. The parties agreed that the district
    court’s decision on the admissibility of Dr.
    Richardson’s testimony also would apply to Dr.
    Kokmen and Dr. Warach because the question
    considered by the court--the propriety of
    reliance on Mr. Cooper’s statements to the
    physicians in determining causation--was the same
    for each of them.
    The district court refused to admit the
    testimony. Because each physician relied on Mr.
    Cooper’s statements about his past medical
    history as the basis for a diagnosis that Mr.
    Cooper’s fall caused his CPS, the district court
    concluded that the physicians had no scientific
    basis for their testimony. We believe that the
    district court assumed an overly aggressive role
    as "gatekeeper" and that the jury ought to have
    been allowed to assess the physicians’ assertion
    that trauma from the fall caused Mr. Cooper’s
    pain.
    Dr. Richardson, a pain specialist associated
    with St. Louis University, treated Mr. Cooper for
    chronic pain, beginning on August 30, 1994. In
    his deposition testimony, he stated that trauma
    is a recognized cause of chronic pain syndrome.
    He also described his examination of Mr. Cooper,
    which included a physical examination and a self-
    reported medical history from the patient. In the
    course of that medical history, Mr. Cooper told
    him about his fall at the Nelson construction
    site. Mr. Cooper also told Dr. Richardson that,
    after the accident, he began experiencing pain in
    his mid-thoracic area, his buttocks and thighs,
    his right leg, his neck, and his shoulders, and
    that he also suffered headaches. In his
    diagnosis, Dr. Richardson concluded that Mr.
    Cooper was suffering from chronic musculoskeletal
    pain. Dr. Richardson further said that, based on
    Mr. Cooper’s statement that he had been free of
    pain before the fall, the pain was caused by the
    fall. Dr. Richardson also explained that the
    cause of Mr. Cooper’s trauma was irrelevant to
    him in prescribing a course of treatment and
    that, therefore, he did not inquire further as to
    the cause of Mr. Cooper’s CPS.
    The district court, attempting to fulfill the
    mandate of Daubert v. Merrell Dow
    Pharmaceuticals, Inc., 
    509 U.S. 579
     (1993),
    essentially identified four issues that it
    believed needed to be resolved before Dr.
    Richardson’s testimony could be admitted. Those
    issues were:
    1)   Is there a scientific basis for diagnosing
    a patient as having chronic pain syndrome?
    2) If so, is there a scientific basis for
    finding that trauma could cause chronic pain
    syndrome?
    3) If so, is there a scientific basis for
    finding that Mr. Cooper has chronic pain
    syndrome?
    4) If so, is there a scientific basis for
    finding that Mr. Cooper’s chronic pain syndrome
    was caused by trauma?
    As this case comes to us, Nelson has admitted
    that the diagnosis of CPS is generally, although
    not universally, recognized among members of the
    medical profession. It recognizes that, among
    physicians who believe that CPS is a disease,
    trauma is generally recognized as a cause of that
    condition. It also acknowledges that Dr.
    Richardson may have employed a differential
    diagnosis to determine whether Mr. Cooper suffers
    from CPS. Nelson therefore asks us to focus on
    the fourth inquiry: whether there was a
    scientific basis for concluding that Mr. Cooper’s
    CPS was caused by the fall down the hill. Nelson
    contends that not only could Dr. Richardson not
    rely on a patient’s statements to prove
    causation, but, in this case, Mr. Cooper had lied
    about the nature of the incident that allegedly
    caused his injuries and had lied further about
    being free of pain before the incident. Nelson
    contends, therefore, that the court properly
    refused to admit Dr. Richardson’s testimony on
    the issue of causation.
    More specifically, Nelson stresses that Dr.
    Richardson admitted that not all CPS patients can
    point to a particular event as the cause of their
    condition and further admitted that emotional
    factors have been known to play a role in the
    onset of the condition. Nelson further contends
    that Dr. Richardson had not taken into account
    the possible effect of such other factors in Mr.
    Richardson’s life on the onset of the condition.
    Indeed, argues Nelson, Dr. Richardson made no
    critical evaluation of the cause of Mr. Cooper’s
    CPS because it was not necessary to his treatment
    of the condition that he know with any certainty
    its cause. Before this court, Nelson argues that
    Dr. Richardson’s "post hoc, propter hoc"
    determination of cause, although perhaps an
    acceptable methodology in cases in which the
    mechanism of injury is understood, is not
    adequate in cases such as this one in which that
    mechanism is not understood.
    We think that Nelson suggests, in the context of
    this case, an overly demanding gatekeeping role
    for the district court. Indeed, Nelson seems to
    agree that, in clinical medicine, the methodology
    of physical examination and self-reported medical
    history employed by Dr. Richardson is generally
    appropriate. Although it disputes the
    acceptability of such an approach in the case of
    conditions whose etiologies are less specific, it
    suggests no alternative that could be employed by
    the conscientious clinical physician in this
    situation. Certainly, when the asserted cause of
    the patient’s condition is a phenomenon that
    requires specialized scientific knowledge, "an
    insightful, even an inspired, hunch" will not
    suffice. Rosen v. Ciba-Geigy Corp., 
    78 F.3d 316
    ,
    319 (7th Cir.) (testimony of treating physician
    that nicotine patch worn for three days was a
    cause for myocardial infarction properly
    excluded), cert. denied, 
    519 U.S. 819
     (1986). See
    also Bradley v. Brown, 
    42 F.3d 434
    , 438 (7th Cir.
    1994) (testimony of physician that multiple
    chemical sensitivity was the result of pesticide
    exposure properly excluded); O’Conner v.
    Commonwealth Edison Co., 
    13 F.3d 1090
    , 1107 (7th
    Cir.) (physician’s testimony that radiation
    exposure caused plaintiff’s cataracts properly
    excluded), cert. denied, 
    512 U.S. 1222
     (1994);
    Porter v. Whitehall Labs., Inc., 
    9 F.3d 607
    , 614
    (7th Cir. 1993) (treating physician’s testimony
    that renal failure caused by ibuprofen was
    properly excluded). In Rosen, Chief Judge Posner
    emphasized that the purpose of the rule announced
    in Daubert "was to make sure that when scientists
    testify in court they adhere to the same
    standards of intellectual rigor that are demanded
    in their professional work." 
    78 F.3d at 318
    .
    Indeed, Rule 703 of the Federal Rules of Evidence
    explicitly permits reliance on material
    "reasonably relied upon by experts in the
    particular field in forming opinions or
    inferences." Fed. R. Evid. 703. Our case law has
    recognized that experts in various fields may
    rely properly on a wide variety of sources and
    may employ a similarly wide choice of
    methodologies in developing an expert opinion.
    See United States v. Lundy, 
    809 F.2d 392
    , 395-96
    (7th Cir. 1987) (noting that arson experts
    regularly rely upon "interviews with many
    witnesses to a fire" as a "standard investigating
    technique in cause and origin inquiries"); see
    also United States v. Lawson, 
    653 F.2d 299
    , 302
    n.7 (7th Cir. 1981), cert. denied, 
    454 U.S. 1150
    (1982). Here, Dr. Richardson essentially
    testified that a patient history indicating
    freedom from pain before a given event followed
    by pain of the type experienced and observed
    following the incident was a sufficient basis for
    diagnosis and treatment of Mr. Cooper’s chronic
    pain syndrome.
    The possibility of Mr. Cooper’s CPS being
    attributable to a factor other than the fall is a
    subject quite susceptible to exploration on
    cross-examination by opposing counsel. Similarly,
    the accuracy and truthfulness of the underlying
    medical history is subject to meaningful
    exploration on cross-examination and ultimately
    to jury evaluation. Therefore, Nelson’s
    contention that other conditions of Mr. Cooper’s
    might have caused his CPS goes to the weight of
    the medical testimony, not its admissibility.
    Notably, on cross-examination of Dr. Richardson,
    Nelson elicited testimony that Dr. Richardson had
    really done no investigation into the causes of
    Mr. Cooper’s CPS; Nelson presented evidence that
    Mr. Cooper suffered physical maladies before July
    7, 1992; it also presented evidence that Mr.
    Cooper had been less than truthful in the history
    he submitted to Dr. Richardson. This evidence
    would permit a jury to conclude that the fall did
    nothing to cause CPS. The proper method of
    attacking evidence that is admissible but subject
    to doubt is to cross-examine vigorously, to
    present contrary evidence, and to give careful
    instructions on the burden of proof. Daubert
    acknowledged the continuing vital role that
    "[v]igorous cross-examination, presentation of
    contrary evidence, and careful instruction on the
    burden of proof," 
    509 U.S. at 596
    , are to play in
    the trier of fact’s ultimate evaluation of
    admissible but shaky evidence. See Daubert, 
    509 U.S. at 596
    . See also Rushing v. Kansas City S.
    Ry. Co., 
    185 F.3d 496
    , 507 n.10 (5th Cir. 1999);
    Allison v. McGhan Med. Corp., 
    184 F.3d 1300
    , 1311
    (11th Cir. 1999); Freeman v. Case Corp., 
    118 F.3d 1011
    , 1017 (4th Cir. 1997), cert. denied, 
    522 U.S. 1069
     (1998). All of these tools were
    utilized by Nelson.
    Here, a physician employed the accepted
    diagnostic tool of examination accompanied by
    physical history as related by the patient./8 In
    this case, this methodology was acceptable under
    the gatekeeping requirements of Daubert. We are
    aware that, although Daubert is concerned
    primarily with the issue of methodology, not
    conclusions, "conclusions and methodology are not
    entirely distinct from one another. Trained
    experts commonly extrapolate from existing data."
    General Elec. Co. v. Joiner, 
    118 S. Ct. 512
    , 519
    (1997). Although a court "may conclude that there
    is simply too great an analytical gap between the
    data and the opinion proffered," 
    id.,
     no such
    suggestion has been made here. Accordingly, in
    the circumstances presented here, Dr.
    Richardson’s testimony should not have been
    excluded under Daubert solely on the ground that
    his causation diagnosis was based only on his
    patient’s self-reported history.
    On remand, the district court must revisit the
    issue of the admissibility of the testimony of
    the physicians and must determine the
    admissibility of the proffered evidence in
    accordance with this decision. The district court
    retains, of course, the discretion to exclude
    portions of the depositions that are inconsistent
    with other Federal Rules of Evidence.
    G.   Comparative Fault
    Because we remand this case for a new trial, we
    must consider Nelson’s cross-appeal. After the
    close of evidence, the district court granted a
    directed verdict for Mr. Cooper on the issue of
    comparative fault, finding no evidence to suggest
    that there was an alternate route for Mr. Cooper
    to use to get around the ditch. Nelson argues
    that there was testimony that Mr. Cooper knew the
    ditch was dangerous, and knew of ways around the
    ditch, and that, therefore, the jury should have
    had a chance to consider the question of
    comparative fault. We review the district court’s
    decision de novo. See Payne, 
    146 F.3d at 432
    ;
    Bowlen, 
    956 F.2d at 727
    .
    A manager for Nelson, James Quickstead,
    testified that there was an alternative area for
    workers to park that would not require them to
    walk over the ditch. He acknowledged, however,
    that the Wal-Mart parking lot was the primary
    parking lot. Robert Bunch testified that some of
    Nelson’s men took a truck around the ditch and
    that, on one occasion, a Nelson truck carried his
    tools around the ditch. Mr. Cooper responds that
    Bunch’s testimony discussed the time period after
    Mr. Cooper’s injury. Although Nelson is correct
    that Mr. Cooper was aware of the danger of the
    ditch and proceeded despite it, Mr. Cooper parked
    in the primary parking lot for Nelson workers,
    and crossed the primary route used by Nelson
    workers from that lot to the work site. We agree
    with the district court that his choice to do so
    does not implicate the doctrine of comparative
    fault.
    Conclusion
    For the foregoing reasons, the jury verdict is
    reversed, and the case is remanded for further
    proceedings consistent with this opinion./9
    REVERSED and REMANDED
    /1 Although the case is brought by the injured party
    and the trustee of his bankruptcy estate, for the
    reader’s convenience, we shall refer solely to
    Mr. Cooper throughout this opinion.
    /2 Alternative parking was available, but the lot
    described in the text was the primary parking
    lot.
    /3 Plaintiff’s statement of genuine issues of
    material fact precluding summary judgment at
    I.C.10.
    /4 
    Id.
     at I.C.9.
    /5 We note that in a notice pleading regime, the
    plaintiff is often well advised when filing his
    complaint to limit the detail of its factual
    averments. See American Nurses’ Ass’n v. State of
    Illinois, 
    783 F.2d 716
    , 724 (7th Cir. 1986) ("A
    plaintiff who files a long and detailed complaint
    may plead himself out of court by including
    factual allegations which if true show that his
    legal rights were not invaded.").
    /6 See also Pippin v. Chicago Hous. Auth., 
    399 N.E.2d 596
    , 599 (Ill. 1979) ("The Authority’s
    duty was limited by the extent of the
    undertaking"); Kotarba v. Jamrozik, 
    669 N.E.2d 1185
    , 1188 (Ill. App. Ct. 1996); Perkaus v.
    Chicago Catholic High Sch. Athletic League, 
    488 N.E.2d 623
    , 628 (Ill. App. Ct. 1986).
    /7 It is also clear that counsel properly preserved
    his objection to the instruction given by the
    court. R.408 at 286-87. See Lawson v. Trowbridge,
    
    153 F.3d 368
    , 372 (7th Cir. 1998).
    /8 Fed. R. Evid. 803(4) n.4 (statements of external
    cause of pain not hearsay because of
    trustworthiness).
    /9 Nelson has asked that Mr. Cooper be sanctioned
    for bringing a frivolous appeal. In light of our
    disposition of the case, Nelson’s motion must be
    denied.