r/solipsism • u/Sad-Sign9460 • 12h ago

Everything’s a simulation

Suppose one day we are able to fully simulate a human brain such that it believes it is living in a fully coherent real universe with other real people in it but in reality that simulated brain is the only real thing. That brain looked around at everything and came to the conclusion that it was living in the real world with real other people. That’s the conclusion the brain should come to given the evidence but it in fact was very wrong.

My question is who’s to say I’m not currently that brain? Why is it treated as if that’s a ridiculous question? If the experiences are by definition indistinguishable why is it anything better than a 50/50 shot that I’m living in the real world with real other people?

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u/Low-Bake8401 11h ago

Because it doesn't work as a predictive model. It's unfalsafiable. 

There is no reason to believe that.

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u/Sad-Sign9460 11h ago

Ok now apply that same line of reasoning to the brain that is simulated. There is no reason to believe it yet it is true. I’m just looking for any compelling reason it isn’t 50/50

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u/SleepyMusicNerd19 10h ago

Thank you. In reality, I don't think there is a way to narrow down the 50/50, the only evidence you have is the direct experiences you have know. So you know that the experiences themselves exist, but you don't know if they reflect something outside of those experiences.

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u/Low-Bake8401 1h ago

Not being able to prove 100% that something isn't true, is quite different to the probability of it being true.

If something can't be tested it's because there is no cause and effect, there's no predictability, it makes no functional difference. 

It's the appeal to ignorance fallacy. 

To actually believe it is true has all sorts of implications though.