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Sebastian_Hagen2 comments on Belief in the Implied Invisible - Less Wrong

30 Post author: Eliezer_Yudkowsky 08 April 2008 07:40AM

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Comment author: Sebastian_Hagen2 08 April 2008 01:43:49PM 6 points [-]

To make it clear why you would sometimes want to think about implied invisibles, suppose you're going to launch a spaceship, at nearly the speed of light, toward a faraway supercluster. By the time the spaceship gets there and sets up a colony, the universe's expansion will have accelerated too much for them to ever send a message back.

Ah! Now I see that my earlier claim about sane utility functions not valuing things that couldn't be measured even in principle was obviously bogus. Some commentors poked holes in the idea before, but a number of issues complicating the p-zombie case prevented me from seeing how big those were. This example made it really clear to me. Thank you!