cousin_it comments on Notes on logical priors from the MIRI workshop - Less Wrong

18 Post author: cousin_it 15 September 2013 10:43PM

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Comment author: cousin_it 17 September 2013 05:49:09PM *  1 point [-]

I'm not sure "existence" is the best intuition pump, maybe it's better to think in terms of "caring", like "I care about what these programs would return" and "I care about what would happen if these logical facts were true". There might well be only one existing program and only one set of true logical facts, but we care about many different ones, because we are uncertain.

Comment author: Armok_GoB 17 September 2013 08:23:30PM 0 points [-]

I already have an intuition setup where "what I care about" and "what really exists" are equivalent. Since, you know, there's nothing else "exists" could mean I can think of and "what I care about" is what it seems to be used like?

May or may not need an additional clause about things that exist to things that exist also existing, recursively.

Comment author: cousin_it 17 September 2013 08:37:33PM *  3 points [-]

Let's say you "care" about some hypothetical if you'd be willing to pay a penny today unconditionally in order to prevent your loved ones from dying in that hypothetical. If we take some faraway digit of pi, you'll find that you "care" about both the hypothetical where it's even and the hypothetical where it's odd, even though you know in advance that one of those provably does not "exist". And if you only had a limited time to run a decision theory, you wouldn't want to run any decision theory that threw away these facts about your "care". That's one of the reasons why it seems more natural to me to use "care" rather than "existence" as the input for a decision theory.

Comment author: Armok_GoB 17 September 2013 09:58:52PM 0 points [-]

Sounds like both of us could use either interpretation without any difference in conclusion, and just find different abstractions useful for thinking about it due to small differences in what other kinds of intuitions we've previously trained. Just a minor semantic hiccup and nothing more.