John continues to ruffle the feathers of scientists and philosophers ... Concepts of consciousness, from pure materialism to panpsychism ... John: The solipsism problem will keep the mind-body problem problematic ... Daniel Dennett’s inordinate aversion to mystery ... John gives us the plot spoiler about his book-in-progress ... Bob thought he had Dan Dennett cornered. But then… ... Are we in a simulation? Perish the thought, says John ...