By what empirical means can a person determine whether he or she is presently awake or dreaming? Any conceivable test addressing this question, which is a special case of the classical metaphysical doubting of reality, must be statistical (for the same reason that empirical science is, as noted by Hume).
Category: Digital Physics
Quantum simulators are devices that actively use quantum effects to answer questions about model systems and, through them, real systems.
“When a hyper intelligent designer of universes uses mathematical entities of exceptional type (e.g. the exceptional Lie algebras, or the exceptional finite simple groups, etc) to help it in its design work, it will choose the largest example of the exceptional type it is using.”
A recent paper from Dr. Lloyd discusses limits to digital computation as we now employ it, but he further shows that the universe itself is a sort of vast quantum computer.
Recently, there has been widespread confusion about digital physics relating it to the simulation argument. [updated]