if one cannot observe a system without changing it, then such an omniscient demon is impossible: since 1) it's part of the system/universe and by observing it it will be changing it or, if it's not, then 2) by definition it cannot know the location/momentum of every atom in the universe, just of one closed system
yeah exactly. like the other commenter said, if you accept quantum physics the laplace demon is outdated because the thought experiment points out a problem/possibility in classical mechanics, but not in quantum, where it's not even about atoms anymore, and knowing things becomes very problematic. even the concept of time becomes different, non-linerar, where idk if you can even talk about past-present-future.
from a very pragmatic position: can a human brain know itself, even disregarding quantum states, just down to an atom? not even that. because to "know" anything a brain requires so many synapses, and those are made of i don't even know how many infinities of atoms
Well I can assure you that that's impossible. For example, there probably were entire cultures whose artifacts were primarily wood or clay-based. We'll never know enough about them because these materials have long decomposed, there's just nothing to compute or extrapolate, yet they existed and influenced future developments. We can know a lot and computers can help too, but it will never be a full picture.
if one cannot observe a system without changing it, then such an omniscient demon is impossible: since 1) it's part of the system/universe and by observing it it will be changing it or, if it's not, then 2) by definition it cannot know the location/momentum of every atom in the universe, just of one closed system
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bc you have to observe it again after changing it to know about its new state, thereby never attaining total omniscience
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yeah exactly. like the other commenter said, if you accept quantum physics the laplace demon is outdated because the thought experiment points out a problem/possibility in classical mechanics, but not in quantum, where it's not even about atoms anymore, and knowing things becomes very problematic. even the concept of time becomes different, non-linerar, where idk if you can even talk about past-present-future.
from a very pragmatic position: can a human brain know itself, even disregarding quantum states, just down to an atom? not even that. because to "know" anything a brain requires so many synapses, and those are made of i don't even know how many infinities of atoms
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This is out of my depth. Is that what people in archaeology say these days, that they just need to do better mathematical models?
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Well I can assure you that that's impossible. For example, there probably were entire cultures whose artifacts were primarily wood or clay-based. We'll never know enough about them because these materials have long decomposed, there's just nothing to compute or extrapolate, yet they existed and influenced future developments. We can know a lot and computers can help too, but it will never be a full picture.