Suppose I have a question that is concerned not with 'what is knowledge' or 'how we acquire knowledge,' but instead how we are able to implement it, are we still talking about epistemology or about another branch of philosophy?
For example, let's suppose we have an agent who knows some collection of values and knows them to be good. I'm curious about the process by which she takes these values and applies them to specific situations. Is this still epistemology?
By way of another example, I know some assume, explicitly or otherwise, that people reason the same way that a computer does... sort of. While this assumption seems really weird to me (like I don't even know what it means), it does allow a philosopher to prove the existence of limits to human reasoning like mathematicians and computer scientists have proven the existence of an absolute unavoidable incompleteness in their fields. (Like Gödel's incompleteness theorems, for example.)
Is this still within the domain of epistemology? Or do discussion about the character, breadth and limits of rational thinking belong to a different branch of philosophy?