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Time's Arrow Explained by Minute Physics

Why does time flow from the past to the future? That’s an extraordinarily deceptively simple question. It seems so, well, straightforward. But when you start to really investigate it, you wind up going down a rabbit hole of twisty, complicated physics. When I first started reading about this, I was surprised to learn that it’s tied to entropy. That’s a concept in physics that has a lot of different ways to think about it, but the most common colloquially is to say it’s the degree of disorder in a system.
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