Quote:
Originally Posted by madnak
Libertarian free will is indistinguishable from randomness. Libertarians typically believe that if an action can be perfectly predicted, then that action is not freely willed. From that (mainly) I derive that freely willed action must be unpredictable to some degree.
Normally, when we are not able to predict an outcome by any means, we call that outcome "random." However, libertarians are adamant that free will is not random.
You're equivocating a bit here. Actually, I think you're equivocating quite a lot. And it's coming down to what your understanding of "randomness" is. But fortunately, you've finally provided a definition of it, so that I can at least point it and use it to explain something.
Your definition of random is, in fact, what I suggested you were saying. You have defined anything that is "non-deterministic" to be random, so that there exist two categories of events. Deterministic events (under the narrow definition you presented) and everything else.
This categorically excludes the concept of free will as it is understood. It's pretty close to a strawman. (In fact, it is precisely that which is used in a strawman argument against the concept of responsibility: If my behavior is deterministic, then I cannot be held responsible for my actions. But if my behavior is not deterministic, then it's random, and I cannot be held responsible for my actions. Therefore, there's no such thing as responsibility.)
Libertarian free will is simply the negation of the claim that "ALL events are deterministic." In other words, "there are some events which are not deterministic" (again, using your narrow definition of determinism). There is no particular description of what causes particular outcomes. Rather, there is simply the claim that events happen that you would not have been able to "express as a function of every other state of the universe in some systematic and non-arbitrary way."
The equivocation happens at the point that you declare that "when we are not able to predict an outcome by any means, we call that outcome 'random.'" For example, there are events which are "random" but can be predicted (given sufficient information). Chaotic events, such as balls falling (see
http://en.wikipedia.org/wiki/Bean_machine) serve as sufficient examples to demonstrate this. The path of any particular ball is "random" in that we are unable to predict the outcome, but at the same time, it's "deterministic" because we understand that somehow, we *could* actually determine the path that a particular ball will take, given precise enough information.
Therefore, your sense of random is not well-applied in this situation. In this situation, the word is implying something about an absence of information, and not one of a systematic inability to compute (ie, predict) the outcome. You are adding a different concept (unsurprisingly, one that is related to measurement) when you use the term "random" in the way that you have been.
The fact that you think it's "indistinguishable" is part of your epistemology ("How can you know whether it's random or free-willed?"), and reflects a desire for an empirical answer. As it has been repeatedly stated, the question of free will is NOT an empirical one. There is no measurement that can prove or disprove either free will or determinism. This question is simply outside the realm of meaningful questions with that approach to knowledge.
I'm stepping into your conversation with Jib a bit here, but I've pointed to the notion of "regretting a decision." What does it mean that you made a "decision"? I'm going to assume that it's the same thing as a "choice."
"Regret" of a decision can be framed in the words "if only I had ..." Under the deterministic thesis, this regret is nonsense because there's no "if only..." The decision was the only possible decision, so that even if you somehow knew in advance the outcome, you still could not have done it differently. The idea that there is such a thing as "if only..." is an indication (not a proof) of free will. That there were other possibilities is what is encompassed in the negation of "ALL events are deterministic." It's the statement that "If I had to do it again, I would do it differently" (which implicitly assumes that you *could* have done it differently -- for if you couldn't have done it differently, you would have done it the same way).
[And all this is related back to the concept of responsibility, but that's a distraction from my primary objection to your position.]
All of this to say that your narrow definition of "deterministic" and that leads to your broad definition of "random" (as "not deterministic") is the reason that you're struggling to understand what people mean by "free will." It's what leads you to make claims like "Nobody has ever been recorded describing themselves as having libertarian free will in the ancient past." I would not be surprised if it ultimately turned out that in your own thoughts you've ended up using "determinism" in a very BROAD sense of some form of basic "cause-and-effect" (which is what I think you did in that first post that I responded to).