The way in which time is treated in modern physics is not essentially different from the way space is treated, and the 'time' of physical descriptions does not really flow at all. .... The temporal ordering that we appear to perceive is something that we impose on our perceptions to make sense of them in relation to the uniform forward time-progression of an external physical reality.
-- Roger Penrose, from The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics.
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