The Best Experts Increase Odds of Winning by Devising Strategy, Guiding Discovery, and Enhancing the Quality of Daubert Challenges Donald M. May at Claims Journal explains how the best expert witnesses increase odds of winning by devising strategy, guiding discovery, and enhancing the quality of Daubert challenges. Here are the sort of queries—about specific topical expertise, testimony record, exclusion history, and overall expert witness income—that experts should expect before being hired for top cases.