 The answer to the first might include both specific knowledge (i.e., your knowledge that you have a hand) or types of knowledge—viz., we have knowledge of mathematics, knowledge of the past, knowledge of the qualitative character of our experiences, etc. An answer to the second kind of question would look very different. An answer to the second would give us criteria (or canons, methods, principles, or the like) that would explain how we know whatever it is that we do know (Sosa 1980: 4; cf., Cassam (2007) for a slightly different “how possible” reading of this second question).