We commonly turn to the metaphor of the mind as a sort of computer, yet we are incapable of programming a computer to perform even the simplest cognitive tasks that humanity is capable of, and this stark failure speaks to the centrality of the problem of framing. This 'frame problem' is one of determining relevance--of limiting thought regarding an impending action to that (and only that) which falls within the context at hand--in such a way that computationally tractable thought processing can take place. The simple fact is that we do, in fact, do this in day to day cognition, ubiquitously and quite efficiently. Yet it is not at all clear how we manage to do it without entailing a constant and nearly infinite revision of the entire epistem...