Is time an illusion?
The Conversation Weekly
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The Entropy Business
Time is a coordinate on space time. It doesn't flow as a fundamental feature any more than space flows. The idea that we are propelled through it by some sense of flow is just a consequence of our macroscopic existence in a world where entropy is going up. We have an impression that time flows because entropy is increasing, which gives us the arrow of time, whereas there's no arrow of space. But that doesn't mean it's illusion. Space can be just as real as time is.
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