 The Implicit to Explicit Knowledge Question: We said that for Peacocke our knowledge or understanding of modality is parasitic on our knowledge of the Principles of Possibility. However, it seems somewhat unclear how our tacit knowledge of Principles of Possibility exactly gives us explicit knowledge of modal facts. In other words, it seems that Peacocke owes us an answer to the following question: How exactly are we to epistemically move from (implicit) knowledge of Principles of Possibility to (explicit) knowledge of modal facts or propositions so that knowledge is transmitted? In answer to this question Peacocke offers the following: