Eliezer_Yudkowsky comments on So You Want to Save the World - Less Wrong

41 Post author: lukeprog 01 January 2012 07:39AM

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Comment author: [deleted] 28 December 2011 03:36:55AM 7 points [-]

Clearly, if the algorithm concludes that it will certainly not choose the $5, and then does choose the $5, it concluded wrong. But the reasoning seems impeccable, and there don't seem to be any false premises here. It smacks of the unexpected hanging paradox.

Ooh, but wait. Expanding that reasoning a bit, we have...

The utility of $10 is greater than the utility of $5. Therefore, an algorithm whose axioms are consistent will never decide to choose $5. I am an algorithm whose axioms are consistent. Therefore, I will never decide to choose $5.

The assumption "I am an algorithm whose axioms are consistent" is one that we already know leads to a contradiction, by Löb's theorem. If we can avoid the wrath of Löb's theorem, can we also avoid the five-and-ten problem?

(Granted, this probably isn't the best place to say this.)

Comment author: Eliezer_Yudkowsky 28 December 2011 04:55:45PM 7 points [-]

If we can avoid the wrath of Löb's theorem, can we also avoid the five-and-ten problem?

Very likely yes. Now ask if I know how to avoid the wrath of Löb's theorem.

Comment author: wedrifid 28 December 2011 05:02:38PM 7 points [-]

Very likely yes. Now ask if I know how to avoid the wrath of Löb's theorem.

Do you know how to avoid the wrath of Lob's theorem?

Comment author: Eliezer_Yudkowsky 28 December 2011 05:04:36PM 4 points [-]

Not yet.

Comment author: Manfred 28 December 2011 07:21:45PM 3 points [-]

What kind of powers are you hoping for beyond this sort of thing?

Comment author: Anubhav 17 January 2012 08:29:19AM -1 points [-]

Now ask if I know how to avoid the wrath of Löb's theorem

For someone making a desperate effort to not be a cult leader, you really do enjoy arbitrarily ordering people around, don't you?

</humour possibly subject to Poe's law>