“Why Life Exists” by Isaac Arthur, 30 minutes.
In summary, to dissipate heat, he says.
He gives examples of emergent behavior in mathematics, taking some from chess (why does chess theory work out the way it does) and then with games, like an ant moving from light to dark squares, eventually abandon the complex web it has created to migrate.
I think that life gives the universe the opportunity to limit disorder. Entities localize agency, the ability make decisions with self-interest, or layered within the context of a group (like a hive or colonial organism, even the slime mold).
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