els comments on Is Determinism A Special Case Of Randomness? - Less Wrong

-4 Post author: DonaldMcIntyre 04 May 2015 01:56AM

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Comment author: [deleted] 04 May 2015 05:32:53AM *  0 points [-]

I think this article is useful when thinking about determinism and free will:

Suppose to be able to do an experiment where we can put a person in exactly the same mental situation (with the same memories, values, character, mood ...) and suppose we repeat the experiment many times, always with the same initial conditions. What would observe? There are two extreme possibilities: the first is that we see that the person will decide entirely at random. In this case the results will be just governed by chance. Half the time he will make a choice, the other half he will make the other choice. The second extreme possibility is that instead the person will always make the same choice.

In which of these two cases, is there free will?

Both answers are meaningless. If we answer in the first case, we are saying that free will is manifested when we decide completely at random, throwing a coin. I do not think that this is what people believing in free will mean. If so, we must conclude that we go to heaven or hell by pure chance. But the second answer is even worse: in this case free will is to be determined by our own internal mental states! That is, it means the absence of free will!

Our idea of being free is correct, but it is just a way to say that we are ignorant on why we make choices.

Comment author: TheAncientGeek 04 May 2015 05:23:54PM -1 points [-]

Incomparibilist free will means independence from external circumstances, not internal ones.

Comment author: [deleted] 04 May 2015 05:42:45PM 0 points [-]

Oh! Okay. I mentioned this quote to my high school religion teacher, and he seemed to think free will was determined by our internal mind-state, and that our choices would result the same every time, so I guess he probably believed in incompatibilist free will, and that fits with what you're saying... although it doesn't sound very free to me.

So how would you describe compatibilist free will then? Is that the belief that our decisions are random, that based on the external and internal circumstances, they could still go either way?

Comment author: TheAncientGeek 04 May 2015 05:48:54PM *  -1 points [-]

Why would you want to be free from your own brain state?

Compatibilitism: No, See wikipedia,

Comment author: [deleted] 04 May 2015 06:19:11PM *  1 point [-]

From wikipedia:

In other words, although an agent may often be free to act according to a motive, the nature of that motive is determined.

I'm reading, and having a hard time seeing the difference between compatibilism and hard determinism.

Isn't every action done out of some determined motive? Even when we choose which motive to act on, isn't that choice motivated by some other motive? Or is that the difference, that the compatibilist would say the choice to act on a motive is free and not based on another internal motive?

I guess it would help me if you could write something that briefly describes all three positions like this (not saying my descriptions are accurate, just an example):

Incompatibilist free will = Belief that we'd always choose the same thing, dependent on internal states and independent of external circumstances, and this is freedom

Compatibilist free will = Belief that we could choose differently, even with the same internal and external circumstances, and this is freedom

Hard determinism = Belief that we'd always choose the same thing, based on the same internal and external circumstances, and this is not freedom

Comment author: TheAncientGeek 05 May 2015 10:15:12AM *  -1 points [-]

I'm reading, and having a hard time seeing the difference between compatibilism and hard determinism.

Compatibilism=free will could exist even if determinism is true.

Incompatibilism=free will could not exist if determinism is true

Hard determinism=incompatibilism+determinism, ie no free will.

Or is that the difference, that the compatibilist would say the choice to act on a motive is free and not based on another internal motive?

Compatibilists don't generally deny that actions have motives, they deny that your own motives are a constraint on your own freedom. They typically define freedom as being able to do what you want, irrespective of whether what you want is determined.

Isn't every action done out of some determined motive?

How aware are we of our real motives? What's the hard evidence for that?

Comment author: [deleted] 06 May 2015 01:33:24AM 1 point [-]

Oh. So it really is just a definition thing? I thought the two sides might actually have different beliefs about the outcome of that original thought experiment.

So compatibilists think we do have "real motives", but since we're not so aware of them, we might as well keep calling our decision-making process free will. And hard determinists acknowledge the same "real motives" but think that since there are motives driving our decisions that we aren't aware of, we shouldn't call our decision-making process free will. Is this basically the difference between the two?

Comment author: TheAncientGeek 08 May 2015 03:54:50PM *  0 points [-]

Oh. So it really is just a definition thing?

Compatibilism and incompatibilism have different definitions, and various mechanisms have been proposed to fulfill them, which is why I have been using phrases like generally and typically.

I thought the two sides might actually have different beliefs about the outcome of that original thought experiment.

A incompatibilist libertarian ... someone who takes the could-have-done -otherwise view of free will.... should view the thought experiment as a bit of a have-you-stopped-beating-your-wife question. It funnels them into thinking that if they could have done otherwise under a set of circumstances, they would have done something less connected with their values and thought process.

The wise libertarian would want to interpret CHDO on the donut principle,  as meaning the ability to have done differently under the same external circumstances but not necessarily given the same brain state. The fact value divide makes it not implausible that thought processes could have some independence from events, although an appropriate causal mechanism would be needed too.

Compatibilism is more about definitions than mechanisms. For a compatibilist, you are free if you can do what you want, ie, if no one is impeding you, ie the legal fiction of acting of your in free will. That doesn't demand much in the way of a special mechanism, and so is compatible with determinism. Because compatibilists define free will differently, people talk about "incompatibilist fee will".

And hard determinists acknowledge the same "real motives" but think that since there are motives driving our decisions that we aren't aware of, we shouldn't call our decision-making process free will. Is this basically the difference between the two?

The problem with intuitive, folk models of decision making is that they reflect the individuals beliefs about FW, so they are unit independent evidence.