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How about the modern physics engine for the real world? How much energy would it need to calculate all the effects of collisions of the "little" elastic bodies
by bgkim 4y ago
How about the modern physics engine for the real world? How much energy would it need to calculate all the effects of collisions of the "little" elastic bodies with infinite precision? And how fast would it need to be to calculate them in such a short period of time?
It's amazing to think about all the objects in the universe which collide, always according to the laws of physics, not requiring any cost/resource/energy to such computing loads, and reliably without any uncaught exceptions.
Edit: I meant the theoretical physics engine operating the real world.
- bjornsing 4y agoI think it should be safe to assume that you always need a computer that is bigger than the mass you are trying to simulate (in every possible aspect).
- bgkim 4y agoSorry I meant the theoretical physics engine operating the real world. For example if 1N of force is exerted on an atom having 1kg of mass, who is to calculate the resulting acceleration of the atom and update the value of the acceleration state variable of the atom? Atom itself or some kind of the universe OS? And wouldn’t it be necessary some kind of energy to calculate it?
- meindnoch 4y agoJt’s just a guy with a bunch of rocks: https://xkcd.com/505/ https://xkcd.com/505/
- radarsat1 4y ago> not requiring any cost/resource/energy to such computing loads, and reliably without any uncaught exceptions. It is highly distributed, in that every atom in the universe is performing this "calculation", all the time. That is literally an ungodly amount of energy. As for uncaught exceptions, they are also performing "only" this calculation, not much room for exceptions there. But let's not talk about quantum tunneling and other weird things that go on in the even lower level VM ;)
- robin_reala 4y agoIf we’re being literal, a lot of people would claim that that’s precisely a godly amount of energy.
- l33tman 4y agoYeah it is incredibly much more computationally expensive when you consider it's a quantum mechanics universe and not a Newtonian, as all possible updates and combination of updates needs to be calculated and all considered together to generate the output probabilities..