"Say when." That expression, usually reserved as an inquiry by a solicitous dispenser of party libations, is apt for the serious case writer. In both cases it is meant to find out how much is enough. How much liquid or information should we dole out to our vessels? Can we find a Goldilocks solution to the problem, when everything is "just right"? This article delves into a discussion of how much information a professor should put into a case study.