Questions about the reality of Dick's mystical experiences might be compared to questions about his sanity. We don't really have access to information that could confirm or deny. (aside-we might also compare the whole issue of authorial intention.) But we do know that Dick himself was worried about the problem, and devoted a large chunk of his literary energies to such speculations. My wish is that we aim to be at least as sophisticated as PKD himself was in our interrogations of these questions and the assumptions underlying them.
see also my comment on Dave Gill's excellent post on the "crazy" question
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