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whowhowho comments on Reductionism - Less Wrong

40 Post author: Eliezer_Yudkowsky 16 March 2008 06:26AM

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Comment author: whowhowho 05 February 2013 08:04:12PM 2 points [-]

It isn't at all clear why all that would add up to something simpler than a single world theory

Comment author: Eliezer_Yudkowsky 05 February 2013 08:08:19PM 8 points [-]

Single-world theories still have to compute the wavefunction, identify observers, and compute the integrated squared modulus. Then they have to pick out a single observer with probability proportional to the integral, peek ahead into the future to determine when a volume of probability amplitude will no longer strongly causally interact with that observer's local blob, and eliminate that blob from the wavefunction. Then translating the reductionist model into experiences requires the same complexity as before.

Basically, it's not simpler for the same reason that in a spatially big universe it wouldn't be 'simpler' to have a computer program that picked out one observer, calculated when any photon or bit of matter was moving away and wasn't going to hit anything that would reflect it back, and then eliminated that matter.