Lumifer comments on Rationality Quotes Thread September 2015 - Less Wrong

3 Post author: elharo 02 September 2015 09:25AM

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Comment author: Lumifer 07 October 2015 06:41:07PM 0 points [-]

I suspect that if we take the average of e.g. the bitterness of the beers that you have been drinking, it has already converged to an average

Empirically speaking, you are wrong.

Comment author: entirelyuseless 07 October 2015 06:51:43PM 0 points [-]

Perhaps, although I don't see how you can know that unless you have been making measurements, or unless it has definitely been going in the direction of getting more and more sweet, or more and more bitter.

In any case, since beer does not differ an infinite amount in sweetness and bitterness, it won't be easy to stop that average from converging sooner or later.

Comment author: Lumifer 07 October 2015 06:56:37PM 0 points [-]

I don't see how you can know that

Um, if I'm swinging from Lambics to Stouts with excursions into IPAs and Belgian Trappists, do you really think I converged on a particular bitterness?

it won't be easy to stop that average from converging sooner or later.

Random walk, even if bounded, does not converge.

Comment author: entirelyuseless 07 October 2015 06:59:48PM 0 points [-]

The random walk doesn't converge. But the average position does.

Comment author: Lumifer 07 October 2015 07:03:27PM 0 points [-]

The concept of convergence does not apply to the "average position". It always exists.

You are probably thinking of statistical estimation with uncorrelated errors. That is not the case here, you are not estimating some unobserved parameter.

Comment author: entirelyuseless 07 October 2015 07:10:22PM 0 points [-]

I mean your average position on any day taken as the average of all the values up to that day.

As days increase indefinitely, this changing average will converge (e.g. to the central value.)

Comment author: Lumifer 07 October 2015 07:13:11PM 1 point [-]

But that doesn't mean my taste in beer will converge to some value. All it means is that the average of history of my beer wanderings will be somewhere around the middle of the range -- an observation which is quite useless for the free will debate.

Comment author: entirelyuseless 07 October 2015 07:18:56PM 1 point [-]

The general point I was making is that there is nothing about free will, even if by definition it means you have more than one option in the same physical situation, which gives us a reason to expect a pattern different from determinism with the addition of some randomness. So unless someone can show how those patterns would be different, there isn't any special reason to suppose that our actions couldn't correspond entirely to the laws of physics, without that meaning we don't have free will.

Comment author: Lumifer 07 October 2015 08:10:14PM 0 points [-]

a pattern different from determinism with the addition of some randomness

That's heavily underspecified. Most everything can be fit into a pattern of "determinism with the addition of some randomness".

In any case, you started with a specific claim that the choices will converge. Outside of the toy-model setup I didn't think it was necessarily true and I still don't think so.

Comment author: entirelyuseless 07 October 2015 08:29:08PM 0 points [-]

I meant that the changing average of the choices will converge, in the way I expect to happen in the beer case. I still think this will happen under all normal circumstances.