what do physicists mean when they say we potentially live in a simulation?

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I get what a simulation is, at least in the very literal sense. What I’m experiencing feels like reality, it would have to, it’s all any of us have ever known. But what would it mean for us if we truly lived in a simulation? Can it just be turned off and we cease to exist? If we found out we did live in one, how could it change our reality? How do we even hypothesize such a thing? I have zero background in physics just so we’re at an understanding of my physics understanding.

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Anonymous 0 Comments

This is mostly speculative philosophy that some physicists have made. You can sort of take it seriously but there is no serious research or study behind it (as it is scientifically unfalsifiable). There is also absolutely no real “meaning” to this idea.

The claim (ELI5) is that we (as in this entire universe) could be a simulation. Everyone interacts with the universe through their senses – this is how we perceive reality. Behind this idea is the musing that (given some rather broad assumptions) on likelihoods. Given all the things that we believe make up the universe, all the events that precede us, all the coincidences etc, is it more likely that all those things happened by some random chance to result in where we are today. OR is it more likely that the “you” is simply a simulated being in a simulated environment.

This is COMPLETELY impossible to prove or obtain evidence one way or the other. In that sense, it is simply unscientific and unrelated to the actual practice of physics.

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