On May 22, 2025, WLF asked the Eleventh Circuit to overturn a jury verdict built on unreliable scientific expert testimony. In its amicus brief supporting reversal, WLF faults the district court for relying on outdated, pre-Rule 702 amendment caselaw, which treats factual gaps in an expert’s opinion as a jury issue. But the 2023 amendments to the Federal Rules of Evidence explicitly rejected that approach, demanding judicial scrutiny of reliability. The district court’s stale precedent thus conflicts with Rule 702’s amended rigor and is no longer good law. WLF’s brief also rebuts the trial judge’s view that any flaws in the plaintiff’s experts’ testimony go to the weight that testimony should be given, rather than to its reliability.
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