 The Relevant Depth Question: This targets the content of the imagined situation or world that the subject takes to verify some proposition \(p\). In what detail do we have to imagine a world \(w\) in order for the fact that \(p\) seems true in \(w\) to confer evidence for the possibility of \(p\)? (see van Inwagen 1998) The issue of relevant depth has to do with what imagined details are needed to justify a possibility judgment, e.g., is it enough to imagine a human brain functioning normally while not having any experiences to justify the possibility of a philosophical zombie?