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this post was submitted on 05 Aug 2023
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Asklemmy
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Now here’s an interesting take.
In principle, one might be able to predict behavior based on this model.
But I would asset that it is not possible to achieve these conditions no matter what godlike technology one has.
Let’s go simpler. We don’t want to predict a human we want to predict the path of one electron.
Starting from initial conditions we should be able to predict the path of that electron right Wrong!
It’s wrong because it is impossible, in a way that cannot be overcome in this or any universe, to know those initial conditions.
And that may seem like a technicality, but that’s exactly where the chink in the armor is: no matter how precise your model, it’s impossible to determine the state of a closed system, because it’s closed, and it’s impossible to predict the behavior of an open system, because its evolution is determined by its interactions with its surroundings, and you can’t get all that information.
So the idea of using physics to predict things precisely is a Platonic ideal, not a thing which can manifest in reality.
But unpredictability is not the same as free will. Doesn't free will imply a conscious decision being made?
But does it really matter if it's possible for us to make such predictions? If a hypothetical omniscient observer (i.e. Laplace's demon) could predict all your decisions, then that already shows that they're deterministic. Us not being able to actually do the determination wouldn't change the fact that there is a definitive state of the universe for any point in time.
The problem with your simplification is that it loses all predictability.
We can't predict an electron on a miniscule scale. But we certainly can predict the rock it is a part of falling.
We can't predict an electron. But we can determine and estimate with some probabilities. And on a higher scale the summation of individual behavior becomes quite predictable.
If we were to take only your electron argument, it implies we can not predict any material movement.
But the macroscopic universe responds to the subatomic universe because of the existence of chaotic systems which can amplify the tiniest difference. The prediction of the rock breaks down over time because it’s interacting with macroscopic inputs from chaotic systems around it.
I think this is my favorite answer so far.