ruby sparks said:
You are merely, and I think this may be a key point, possibly THE key point in all of this, omitting the word fully in the first part.
It is not a key point. If I am causally determined (rather than parts of me being causally determined, and parts of me not being so), then I am fully causally determined. But this is not an issue. If there is any lack of clarify, let me amend it:
First, that we are fully causally determined does not assume we are fully constrained. The word 'constrain' has a meaning. When I say I'm writing this free of any constraints, I'm not suggesting that there are no causes that fully determine my actions, but rather that there is no coercion or compulsion.
ruby sparks said:
A particular causally determined factor would be a constraint, yes?
Some would, yes. If someone were pointing a gun at me and credibly telling me to write or else he shoots me, I would not be writing this of my own accord. My actions would be constrained.
ruby sparks said:
Therefore, if we are fully causally determined (which it seems we are, temporarily setting aside the possibility of randomness) then that does seem to mean we are fully constrained. How could it not follow?
I do not see how that could possibly follow. Suppose no one is pointing any weapon at me or making any other threats. Suppose, further, that I am free of internal compulsion (again, paradigmatic example of kleptomania). Well, I do not see any of the sort of causes that constrain my choices acting on me. As I said before, for you to have a valid argument, you must have implicit premises. If you post a valid argument - making your implicit premises explicit - I offer to identify which ones of them are contentious.
ruby sparks said:
Indeed it does. A constraint is a limitation or restriction. Fully causally determined would be fully restricted. How are you, like everything else in the universe, not that?
I disagree. That is not the meaning of 'constraint' that is relevant in this context. Take a look at a dictionary definition (e.g.,
https://www.merriam-webster.com/dictionary/constraint), or better, observe how people use the word in the wild.
ruby sparks said:
You only mean, as Hume did, no obvious and/or external coercion or compulsion. Again I think you are omitting a crucial 'fully'.
No, I mean what people generally mean by that. I suggest you take a look at the contexts in which the word is used.
Sure, there is a broad sense of "constrain" that might say we are all constrained by our own limitation, e.g., we cannot fly like Superman. Sure, but even in that sense of constrained, we are only partially constrained, and
this is not because of causes, or full causes; rather, it is because of our limited powers.
ruby sparks said:
Once you include all the internal and non-obvious ones, as you surely should, because they are operating on your system, you are in fact, it seems (absent any alternative explanation) fully constrained, and as such you can never freely will to do otherwise than what you do. There is no wiggle room at all. It just doesn't feel like that to you. It's an illusion. You have no free will at all, it would seem. How could it actually be otherwise?
That is not a proper question, as the burden is not on me. Again, the burden is not on me.
I might similarly say:
Once you include all the internal and non-obvious ones, as you surely should, because they are operating on your system, you are in fact, it seems (absent any alternative explanation) you have no power to type on your keyboard.
But that would not follow.
Well, again, I would say that your "it seems (absent any alternative explanation) fully constrained, and as such you can never freely will to do otherwise than what you do. There is no wiggle room at all." does not follow. I have asked you before to please provide a valid argument in which you make your implicit premises explicit. In absence of that, I would say that your conclusion does not follow.
Now, it is an ordinary experience that I do things of my own accord, like writing this. Further, I am not constrained in the sense of 'constrained' relevant here. In a broad sense of 'constrained', as I am not omnipotent, I am constrained to doing what I have the power to, like writing this, etc. But that would not preclude my doing things of my own accord, and again even then, it would be only a partial constraint, and crucially
not due to full causation, but due my lack of power to do stuff like flying like Superman.
ruby sparks said:
As the saying goes, if the moon could think to itself, it might tell itself that it was steering itself around the earth, because it would not be aware that it wasn't doing that.
The saying is mistaken. If the Moon could think and had senses and could see the Earth, etc., and had a sort of human-like mind, it would realize that even if it tries to move in one direction or another, it is
forced against its will to keep spinning around the Earth. The Moon, if rational, could easily try to go into a different direction, and see it cannot.
What if the Moon wanted to go around the Earth? Even then, if it had a human-like mind and were rational, it would realize it's not doing so of its own accord, but rather, it is being pushed. For example, suppose an astronaut has been detached from his spaceship, and is just wandering in space. She wants to go back of course, but does not have the ability to do so. But now suppose a robot from another country just grabs a cable she is attached to, and then just takes her back to her ship. She would realize that she's not moving towards her ship because she chose to of her own accord, but rather, she is just being towed, regardless of what she wants. The same for the Moon.
ruby sparks said:
But, I hear you say, the hypothetically thinking moon is fully constrained. It just doesn't realise it.
But so are you!
No, the Moon would realize it easily, as the astronaut would, if the Moon had a human-like mind. As I would if I were being forced.
ruby sparks said:
Or please tell me how you could even possibly not be.
That is the wrong question to ask,
because when you make an extraordinary claim that much of our ordinary experiences are an illusion, obvious beliefs are false, and so on, the burden is upon you.
Now, if by 'possible' you ask about logical possibility, well, I have not seen any contradiction, and it seems extremely improbable that there is one I have not seen, as I have read many arguments on the subject and frankly I am good at logic.
OTOH, if by 'possible' you mean to ask for an explanation of the mechanism, then I do not know, but that is not my burden. For example, I know I'm conscious. But I do not know how that is possible, as I have not resolved the problem of consciousness. However, if someone claims that consciousness is an illusion (obviously false) the burden would be on them, and my lack of an explantion of how it is that I can be conscious is not even relevant.
For that matter, take a look at my example
in this post. The fact that Jack has no explanation as to how he has the power to move small objects does not change the fact that he has excellent reasons (conclusive even) to believe that he does have that power.
Similarly, I can tell - it's obvious - that I am writing this on my own accord. I can go further and test it - it is easy. I have done so, as explained for example in
this post.
In short,
you have the burden backwards. If you claim that it is not possible that I am writing this of my own accord, your claim - without any argument to back it up - provides a little but almost negligible evidence in support of the hypothesis that I am not writing this of my own accord. It is still beyond a reasonable doubt that I am in fact writing of my own accord. If you want to provide an argument for the impossibility, then that is up to you. So far, you have not provided a logicaly valid argument deriving a contradiction from the hypothesis that I am writing this of my own free will + the hypothesis that the universe is causally deterministic (fully so, if you do not interpret 'causally determined' as usual). Now, maybe the argument you have in your head is valid, but it has further, implicit premises. If so, fair enough: I will just ask you to make the implicit premises explicit. In other words, I am asking you to derive a contradiction from the following explicit premises:
P1: I am writing this of my own free will.
P2. The universe is causally deterministic (fully so, if you do not interpret 'causally determined' as usual).
P3. Whatever other premises you might be using.
On the other hand, if your argument is not for a logical impossibility, but rather, you are saying it is improbable on the basis of the available information, then I would ask to to please say so (i.e., say clearly that you are not suggesting it is logically impossible for the universe to be causally deterministic and for me to write of my own accord), and then give your probabilistic argument.