rosyatrandom comments on The I-Less Eye - Less Wrong

30 Post author: rwallace 28 March 2010 06:13PM

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Comment author: rosyatrandom 28 March 2010 07:36:05PM *  0 points [-]

This 0.5^99 figure only appears if each copy bifurcates iteratively.

Rather than

1 becoming 2, becoming 3, becoming 4, ... becoming 100

We'd have

1 becoming 2, becoming 4, becoming 8, ... becoming 2^99

Comment author: wnoise 28 March 2010 07:45:00PM *  6 points [-]

No, as described, you have probability (1/2)^n of becoming copy #n, and #99 and the original share (1/2)^99.

The original is copied once -- giving 50% #0 and 50% #1. Then #0 is copied again, giving 25% #0, and 25% #2. Then #0 is copied again, giving 12.5% #0, and 12.5% #3, and so forth.

This seems like a useful reductio ad absurdum of this means of calculating subjective expectation.

Comment author: rosyatrandom 28 March 2010 09:05:02PM 2 points [-]

Hmmm.

Yes, I see it now. The dead-end copies function as traps, since they stop your participation in the game. As long as you can consciously differentiate your state as a copy or original, this works.