I’ve wondered this as well. Particularly with regard to quantum mechanics—it just seems so weird that our world is quantum mechanical if we “could have” existed in a classically deterministic or stochastic universe.
Maybe a specific quantum universe is more likely to contain life than a specific deterministic universe, because there are many branches so in some of them the lucky accidents happened? Not exactly this, but something like this: the complexity of the universe is only a part of the equation, we need to also consider how likely is life in the universe, how much life does the universe contain, etc. And the quantum universe may be “worse” in some regard (having more complex rules), but “better” in others.
A classically stochastic universe could also have a lot of branches. A MWI universe doesn’t just have random branches, it only branches under certain conditions, basically when local information propagates widely enough—“quantum darwinism”. I wonder if there is some significance to this method of randomizing that makes life more probable...
I have a hobby of trying to “invent universes” to use as toy models for various things. Sort of like Conway’s Game of Life, except Game of Life lacks a bunch of properties that seem fairly core to characterizing the dynamics of our universe (Poincare invariance and therefore also continuity, Louville’s theorem, conservation of energy and momentum etc.). (It does have some important characteristics that match our universe, e.g. fixed speed of causality (light).) Such universes generally have to be deterministic or stochastic, because making them quantum would be computationally infeasible. However, the properties seem very difficult to satisfy in interesting ways for deterministic or stochastic universes.
I’ve wondered this as well. Particularly with regard to quantum mechanics—it just seems so weird that our world is quantum mechanical if we “could have” existed in a classically deterministic or stochastic universe.
A QM universe is more stable. Not only is the ultraviolet catastrophe avoided, but much of classical chaos.
Maybe a specific quantum universe is more likely to contain life than a specific deterministic universe, because there are many branches so in some of them the lucky accidents happened? Not exactly this, but something like this: the complexity of the universe is only a part of the equation, we need to also consider how likely is life in the universe, how much life does the universe contain, etc. And the quantum universe may be “worse” in some regard (having more complex rules), but “better” in others.
A classically stochastic universe could also have a lot of branches. A MWI universe doesn’t just have random branches, it only branches under certain conditions, basically when local information propagates widely enough—“quantum darwinism”. I wonder if there is some significance to this method of randomizing that makes life more probable...
I have a hobby of trying to “invent universes” to use as toy models for various things. Sort of like Conway’s Game of Life, except Game of Life lacks a bunch of properties that seem fairly core to characterizing the dynamics of our universe (Poincare invariance and therefore also continuity, Louville’s theorem, conservation of energy and momentum etc.). (It does have some important characteristics that match our universe, e.g. fixed speed of causality (light).) Such universes generally have to be deterministic or stochastic, because making them quantum would be computationally infeasible. However, the properties seem very difficult to satisfy in interesting ways for deterministic or stochastic universes.