A jury verdict finding no employer negligence in a workplace slip-and-fall case will not be overturned on appeal where the plaintiff's account of the accident was challenged by inconsistent prior statements and a credit attack, even where expert evidence could explain the mechanism of the fall and subsequent remedial measures were taken. The Shirt calculus does not compel a finding of breach where the probability of the risk materialising was very low, as evidenced by years of incident-free use by many people.
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