Degroot v. Winter

April 4, 1932, in a malpractice case against defendant Winter, in which present counsel represented the parties and argued the question, this court held that it was error to do the identical thing my Brother now sanctions. DeHaan v. Winter,258 Mich. 293. The question was then fully briefed, argued orally by present counsel, considered by the court, and no rehearing was sought. Counsel for plaintiff now urges error in our former holding.

Expert opinion evidence is an exception carved out of the general rule confining a witness to a relation of facts, and is usually accomplished by means of…