In slip-and-fall cases, the mere presence of a foreign object near the site of a fall does not, without more, give rise to an inference that the plaintiff's foot contacted the object. Expert evidence that a substance constitutes a slip hazard must include reasoning and quantification — a bare assertion that grip is reduced, without stating the degree of reduction, is of no probative value. An assessment of 20% of a most extreme case for minor soft tissue injuries with good prognosis and amenability to exercise-based resolution is demonstrably excessive.
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