Having posed those questions, though, we should realize that they are merely representative of a more general epistemological line of inquiry. The epistemological challenge is not just to discover the minimal repair that we could make to Gettier’s Case I, say, so that knowledge would then be present. Rather, it is to find a failing — a reason for a lack of knowledge — that is common to all Gettier cases that have been, or could be, thought of (that is, all actual or possible cases relevantly like Gettier’s own ones). Only thus will we be understanding knowledge in general — all instances of knowledge, everyone’s knowledge. And this is our goal when responding to Gettier cases.