gibran2 said:
Tsehakla said:
The timing of a radioactive decay event is not predictable, but we can be assured it will happen at some time in the future based on the quantum mechanical state of the nucleus... that sounds like determinism to me. Can you come up with any other example of a "lawful" but non-deterministic system?
If we accept your conclusion that quantum indeterminacy is in fact a form of determinism (contrary to what every physicist tells us), then that just makes it easier to show that there is no free will. If we accept your conclusion, then the universe is deterministic and free will is an illusion. Easy!
No, it just shows that QM isn't an entirely random process--which is a good thing because the universe doesn't appear to be random--it does not show that we are unable to freely chose one path over another. If you believe that QM, which (A) appears to be random at heart, is both, a (B) correct model of how things actually work, and that (C) the universe isn't entirely random, then it follows there (D) must be something which influences the decidedly non-random events we see in the macroscopic world.
Based on your previous statements it looks like you would agree with A, B, and C; you've stated A, by virtue of bringing up QM you've implied that you believe B to be (at least close enough to)
true, and since you believe that everything is "lawful" you must also believe C to be
true. At this point if you don't accept D as being
true your beliefs appear to be inconsistent (specifically, I would expect, how can a random QM universe be lawful?).
It appears that it is possible for something to influence the macroscopic nature of the universe, to choose one outcome over another. So, if we don't have free will it is not because the universe disallows the possibility.
gibran2 said:
I don't believe that is a tautology. You are simply stating that: A->B or ~A->B, but it is not at all clear that the truth value of ~A->B is true (which is what would be required for it to be a tautology). Even if you were to reword the statement so that: (A->B) or ~(A->B), which would create a tautology, it is trivial and you would need to do something with it (e.g., run an argument showing that both cases give the same result). The question you need to answer to fix the logical problem is:
If a choice is made without cause, how is that not a choice freely made?
The “in which case the choice isn’t free” clauses are my conclusions, but not part of the tautology. The tautology could be written more explicitly as “Either something causes a choice to be made, or nothing causes the choice to be made.”
OK. That is a trivial statement, no different than saying the something is either "blue" or "not blue", and such statements don't carry any weight because they can be said of anything. If you want to incorporate a
Law of the Excluded Middle statement into an argument you need to use it to demonstrate, e.g., that choosing either something or its negation leads to the same conclusion and therefore the something is immaterial to the argument.
I'll accept that, (E) "something causes a choice" implies (F) "the choice isn’t free”, but I don't see any reason to believe that ~E -> F.
gibran2 said:
The only example of “nothing” causing a choice to be made is a choice made at random. I do not consider a choice made at random (quantum random, not coin-flip random) to be a free choice. I suppose you could define it that way, but why? Why equate freedom with randomness?
I'm not defining anything, I'm trying to see the logic of your argument based solely on your statements. So far your logic is lacking because you are drawing unfounded conclusions. It doesn't matter that you start with a trivial tautological statement (a perfectly reasonable way to start, IMO), what matters is that you are jumping to a conclusion. Why does, `it is not the case that something causes a choice' imply that `the choice is not free'?