Ernest Sosa likes externalism. He thinks that it is intuitively correct. But he must and does agree that it must be clarified in order to avoid certain problems. So, his mission in this paper is to first define what he calls "Generic Reliabilism," then to show how it is susceptible to certain objections, then to present a modified version of it, and to show that this new version is, in general, better than its predecessor. Let us look at his argument. First, we get the usual definition of generic reliabilism: S is justified in his belief that ....