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Comment by LoganDark

6 days ago

> When you look at the stars, are they real or a simulation in your brain?

This is unknowable.

It is knowable isn’t it? We know our brains play a variety of tricks to get a cohesive view out of two wildly complicated but deeply flawed meat sensors.

That fits the definition of a simulation.

  • Not into modern philosophy at all, but I do believe, simulated or not, that this is indeed mostly quibbling.

    An engineer would ask what a simulation would simulate. This is the core of the meaning behind that word. And if the answer is reality and it hints to the fact you cannot perceive everything and you conscience tries to construct a cohesive understanding from limited perception, than I would dispute the fact. The only one who tries to do that are philosophers. Going back to my objective, not-simulated ignorance now.

    • Sorry, but no.

      Simulations are systems which have various rules built into them which govern (entirely) the behavior of the components of the system (at whatever levels the rules apply).

      A given simulation may have rules that are believed or are intended to generate behavior within it which are similar to some other system (e.g. what we experience as "reality"). But it may just as well have an entirely different set of rules intended to create entirely different, even unknown and unpredictable, behaviors.

      Any similarity between a given simulation and what we experience as reality is a property of that particular simulation. There is absolutely no reason why a simulation that is utterly different from our reality could not exist (and indeed, almost certainly already does).

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  • Part of the argument is that you can only know what you experience. But, if this is a simulation, "you" could be a program running on a computer and your every experience is just piped directly into your consciousness without any underlying physical reality. You might even not be interacting with other people in the simulation, it could be just you and everything else is simulated without being similar to whatever existence you have.

    I don't agree with this argument, but it circulates occasionally.

    • > "you" could be a program running on a computer

      If you are in a sim, then the sim execution is an expensive process, it produces heat and consumes energy. If you are in reality, a material body, then keeping alive also consumes energy. The debates about consciousness often assume a cost-free regime, a platonic perspective. I think this is wrong. We have much to gain thinking about how a process provides its own energy, or how it balances costs and gains. Maybe we can find answers about consciousness too if we chase down the cost recursion path.

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  • What's unknowable is whether or not there are real stars that correspond with what you seem to observe; not whether or not your observations themselves are the real stars.

    • Didn’t we already work out they are similar in their spectral output to the Sun, enough to conclude they are the same kind of thing? And observing their movements makes them far away. Do each of us have to do the experiments again to validate that we know what they are?

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