Earlier this month, the Eleventh Circuit Court of Appeals decided a case that deals with an evidentiary issue common in many personal injury lawsuits: the admissibility of expert testimony. In the case of Sorrels v. NCL (Bahamas), the plaintiff was a customer on one of NCL’s cruise ships. At some point during the cruise, the plaintiff slipped and fell on the deck of the ship and fractured her wrist. At the time, the deck was wet from a recent rainfall. She filed suit against the cruise line, alleging its negligence in maintaining the ship’s deck.
The Issues at Trial
In this slip-and-fall case, one of the critical issues was what the ship deck’s coefficient of friction (COF) was. COF is a scientific term experts use to describe how much force is necessary to move one surface over another. In this case, the relevant surface was the ship’s deck; the higher the COF, the less slippery the surface will be.
The plaintiff called an expert at trial to testify to the ship deck’s COF. The expert tested the ship’s deck, although it was 520 days after the slip-and-fall accident. The expert also was going to testify to what he believed that the “normal” COF for a ship deck on a commercial cruise line should be. Specifically, the expert had four conclusions: