Mr. Delisle was diagnosed with mesothelioma and sued Crane Co. and others alleging they were liable for exposing him to toxic amounts of asbestos. After the case began, but before trial, state lawmakers amended the statute that applied to the admission of scientific opinion evidence. On appeal, the companies argued the trial court erred in
applying the amended statute to expert witness testimony. The Fourth District Court of Appeal agreed that testimony should have been excluded. Mr. Delisle asks this Court to determine the correct standard for the admissibility of expert opinion.

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