Expert testimony, we are taught, is intended to assist juries in deciding difficult factual issues. We permit the opinion testimony of folks who know things the rest of us don't because of their education, skill, training or experience, thus, a doctor on disease, or an electrician on circuitry.
One Hand Clapping
Opinion: When Uncorroborated Claims Serve As Expert Testimony
The Connecticut Law Tribune
November 1, 2013