“The essence of relativity is that there is no absolute time, no absolute space. Everything is relative. When you try to discuss time in the context of the universe, you need the simple idea that you isolate part of the universe and call it your clock, and time evolution is only about the relationship between some parts of the universe and that thing you called your clock.”
Read MoreIn the last couple of decades it has become more and more commonplace to encounter — in science and popular culture — various expressions of the idea that the universe we inhabit is, in one way or another, not real. The idea being that it, of course, exists but not at all in the way we perceive it. That it’s a masquerade.
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