Imagine you’re in an open room and you have a bouncy ball. You have a generally good idea where the ball will go after you chuck it at a wall after one or two bounces but it gets a lot harder to tell after that. Now imagine millions of balls and trying to track all of them. That’s what it’s like trying to track all of the molecules in the air. We generally have a good idea of the next few days but after that, it’s a lot harder to predict where the molecules in the air will be.
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