Okay, I'm not all up on my terminology, but I did a little wikiing, so I think I understand what you're saying. And what I would respond is that free will in the compatibilist sense is not really free will, or - better - free will in the compatibilist sense is not the free will that I'm talking about. And when I say "choice," I do not mean compatibilist free will.
I just don't think that there is anything coherent, intelligible that you can actually mean by it.
I don't understand what you mean when you say that "Free will in the libertarian sense is somewhere between a contradiction in terms and devoid of meaning."
What I meant here is that as far as I understand this stuff there is a contradiction in terms. Lib free will tries to connect the choice to that what makes up you on one hand by asserting responsibility, i.e. you and your choice. On the other hand though there is not only no good reason to pass off the event that is dubbed 'choice' as yours, but the assertion of multiple different outcomes severs the connection between you and the choice.
Right, but isn't the determinist position that "you" - the real "you" - don't actually choose coffee or tea - that the chemical makeup of your brain, perhaps acted upon by random elements in some way, compels you to "choose" coffee, but there's no real choice, any more than the Plinko disc chooses to go into the "500" slot?
You need to be aware of what "you" means. There is no "you" that exists independently of its constituents. "You" that is - depending on your exact definition of course - your genetic make-up, your memories, your perceptions, your brain, your will, desire and - if you want - even your soul, spirit and so on. It is not legitimate to try and disassociate "chemical makeup of your brain" from "you." This "chemical makeup"
is (a part of) what you are.
So, it is not that something compels something else to do some action as in "the chemical makeup of your brain, perhaps acted upon by random elements in some way, compels you to "choose" coffee." But rather it is that you compel the outcome 'coffee' to begin with. And because there actually is a connection - a causal connection - between you and the outcome, this outcome can be treated as yours, i.e. your choice.
And this is where lib free will breaks down, I think. It is actually stipulated that there are multiple different outcomes that could come to pass from the very same starting state. The starting state of course that what makes up you; your brain, your soul, memories, your perceptions etc (it doesn't really matter what you toss in there exactly). However, if there are multiple different outcomes to begin with, you can not say that any of the outcomes are compelled, brought about, or caused by you.
Sure, 'coffee' might be the outcome, but there is nothing about you that made this happen. It is not anything in your soul, not anything in your brain, nothing that could be called your memories that is responsible for coffee (and not tea). If there is something about you that is responsible for the outcome, then we are back to determinism.
Of course there is the additional problem that that what makes up a person is not fixed. You are in constant flux, and that what was called "you" five minutes ago, is not exaclty the same "you" as of now. And I think that is where the real crux lies. There is a plain and simple equivocation on the meaning of "you" (or "I" or "person") that is responsible for the perception that you could be reponsible for multiple different things. The you from five minutes ago causes 'coffee,' whereas the slightly different you as of now causes 'tea.'
(The plinko disc is similar to the calculator. There are several important ingredients missing that would make it permissable to even talk about choice at all. Intention, desire, will and so on. It has nothing to do with determinism or not though.)
And what I'm saying is that I don't agree with that.
Thank you for using some of this terminology. It got me to look some things up. I learned that I am a libertarian in the metaphysical sense, which is not the same as a libertarian in the political sense. Neat.
It's also neat (but no surprise) to find the things I'm saying in this thread are
nothing new:
That's what I'm hollering.
The quote in your posts says, in brackets, "providing that all parties agree on incompatibilism."