On 5/17/2019 7:21 AM, Bruno Marchal wrote:
But imagine that you are sent, without knowing, in a virtual reality. Then, if it is rough, you will surely guess that you are in a virtual reality, like in a lucid dream, or like in a video game.

This is incoherent.  If you are the series of computations there is no perspective from which you can see you are in a dream.  You only recognize dreams by comparing them to reality.

You are implicitly begging the question of reality, but you are right. To see if we are in a simulation it is enough to compare what we see with the physical reality, which is given by the statistic on all computations, where there are not pixels, but quantum-like events. You can’t conclude we are awake, but if the obersvbale are different from the material mode of the universal machine,

It is.  The observable is the classical.  Observable means third person sharable, a record.  The mode of the universal machine, per current theories, is quantum and no more than half-observable (Holevo's theorem).

we know that computationalism is false, or that we are in a (malevolent) simulation.

I think Trump is evidence for the latter.

Brent


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