nyan_sandwich comments on We Don't Have a Utility Function - Less Wrong

43 [deleted] 02 April 2013 03:49AM

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Comment author: [deleted] 06 April 2013 02:48:37AM *  4 points [-]

"Utility function" means the same thing as "decision function"

This contradicts my knowledge. By "utility function", I mean that thing which VNM proves exists; a mapping from possible worlds to real numbers.

Where are the references for "utility function" being interchangable with "decision algorithm"? I have never seen that stated in any technical discussion of decisions.

If we wished to regard a thing as deterministic rather than as an agent with free will, we would call its decision function a probability density function instead of a utility function.

I'm confused.

Do you just mean the difference between modeling a thing as an agent, vs modeling it as a causal system?

Can you elaborate on how this relates here?

Underneath both these questions is the tricky question, "Which me is me?" Are you asking about the utility function enacted by the set of SNPs in your DNA, by your body, or by your conscious mind? These are not the same utility functions.

Agree. Moral philosophy is hard. I'm working on it.

One common use of terminal values on LW is to try to divine a set of terminal values for humans that can be used to guide an AI. So a specific, meaningful, useful question would be, "Can I discover and describe my terminal values in enough detail that I can be confident that an AI, controlled by these values, will enact the coherent extrapolated volition of these values?" ... I believe the answer is no

Can you elaborate on why you think it is impossible for a machine to do good things? Or why such a question is meaningless?

Whose utility function?

Tricky question indeed. Again, working on it.

Comment author: Decius 11 April 2013 05:59:28AM 1 point [-]

I have a utility function, but it is not time-invariant, and is often not continuous on the time axis.

Comment author: [deleted] 11 April 2013 06:03:20AM 3 points [-]

And I'm a universe. Just a bit stochastic around the edges...

Comment author: Decius 11 April 2013 08:20:01PM 0 points [-]

Universes are like that. Are you deterministic, purely stochastic, or do you make decisions?