Deutsch has said that if there are no multiple worlds, where does all the computation go? I would not like some cosmic math processor involved, as that might imply we are in a simulation – another unpalatable solution, IMO.

I was just reading about time entanglement, so maybe the calculations are spread out over the age of the universe! But clearly, that is testable using NP problems that require time greater than the universe to complete..

But if the many worlds interpretation is wrong, well then there is no “problem” to solve with mystical alternatives.

]]>My understanding from the many worlds enthusiast is that there are a couple of ways around the 1st law problem, such as multiplying the many worlds by the probability of each one happening, or assuming that the system has a “3+1 dimensionality” within which the thermodynamics laws work, and that the many worlds splits could be said to take place in “probability dimensions,” not physical ones.

Ultimately, these are interpretations of a theory that’s mathematical, so one could say that, absent a method to determine whether interpretations can be falsified, what we’re looking at here is a translation problem from the language of mathematics to a human language. At least that’s my interpretation.

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