#433 – Sara Walker: Physics of Life, Time, Complexity, and Aliens

3379.126 - 3402.589 Sarah Walker

And so that sounds very abstract, but you can just think of a chemical reaction can't happen if there's not a catalyst, for example, or a baby can't be born if there wasn't a parent. So there's a lot of causal contingency that's necessary for certain things to happen. So- You think about this sort of unconstrained, random system. There's nothing that reinforces the existence of other things.