But you're expanding the definition now. You are taking the definition and incorporating the past tense. The definition of free will simply doesn't involve time. "I could have done it differently" isn't a definition of anything, it sounds more like an expression of regret than free will, seeing as regret does deal with what has already come to pass. "I could have done it differently" isn't straightforward at all, it's entirely backwards.
If I'm speaking of my free will regarding a past action, I will use the past, what other tense could I possibly use? In the present, this gives: "it is possible that I do any of the options I am evaluating". If the universe's laws are deterministic, then only one of these options can happen, and the others are not possible.
Most people have (and have always had) a conception of free will which is inconsistent, without realizing it, because they rarely ever think far enough and cling to other inconsistent concepts like souls. Since the dictionary definition of a word is supposed to mirror common understanding, I really have no idea why you expect it to be any different.
Brain, If my body appeared out of nowhere because I whished it to be so, then I am free because the causality of everything I'll do afterward will stop at the moment I was created, and that was my whish to be created in that fashion. If my body appeared out of nowhere, randomly, then all my future actions can be traced back to the randomness of my birth, I am not free. If I was born "normally" then all my actions can be traced back to the state of the Universe in the Very Beginning, I am not free.
It is conceivable that you exist, and it is conceivable that you don't exist. If you exist, then you can't cause yourself to exist, because you already do. If you don't exist, then you can't cause yourself to exist, because you don't exist. Your argument essentially boils down to somehow having a say in whether you exist or not, in a situation where your existence is clearly not logically necessary.
Look,
all causal chains trace back to randomness.
All of them. Even if you suppose that the universe has always existed, as long as it could conceivably have been different, randomness is implicated in picking one infinite sequence among others. Even if all possible universes exist, it's not logically necessary for them to, so randomness is implicated in deciding whether all possible universes exist, or only a finite number does.
Hence why I emphasised that the philosophical zombie is supposed to be physically from a human. A machine like you describe might act the same, but put them in a scanner and you'll be able to tell the difference.
Oh, okay, my bad. I was talking about philosophical zombies in a wider sense. Otherwise, I fully agree with you.
Actually, an event can cause itself if time is circular. Circular time isn't observed in our Universe but it "makes sense".
As far as I can tell, circular time is obfuscated speak for global cycles in the application of rules to data. In other words,
this is "circular time". In this case, it's a bit clearer to say that the event is "periodic", like the oscillation of a pendulum, than to say that it causes itself.
Nonetheless, under circular time, it is true that an event can cause itself
to be repeated. But it remains that in order to do so, it has to exist in the first place. It did not cause the oscillator to exist instead of another.
As for how X could even happen or exist in the first place, how about the following:
X and Y can both be either long-lasting objects or brief events, it works either way.
If X exists, it causes Y to not exist.
If X exists, X causes itself to exist.
If X does not exist, Y causes X to exist.
The only non-paradoxical solution is for X to exist. What caused it to exist? Y? But Y doesn't exist!
And this isn't necessarily just words. You could probably put physical calculations on this, most likely using things like moving and colliding balls.
That's confusing, I don't really see what you mean :(
I view most of physics to be an attempt to compress observation data along the time axis. That is, if one can closely relate the future state of some (any) place in the universe to the past state of a (possibly larger) location, then all we need to describe both past and future is the past (and maybe a bunch of random numbers). A corollary of this is that the "optimal" theory to explain the universe is to determine the point in the past that had minimal entropy, and to use that point as an uncaused "anchor" from which the whole future can be inferred from a simple set of rules. That anchor could be something like the big bang, but not necessarily.
Let's put it this way: the human mind has a tendency to seek explanations that make it so that everything has a cause. In science, this translates to trying to paint our universe as the only way it could possibly have worked. But this is clearly misguided - a world with different laws of physics is perfectly conceivable, and a world with the same laws of physics but different states is also perfectly conceivable. The "choice" of a particular set of laws and a particular initial state (or class of possible initial states) is necessarily random, hence uncaused. And if it is not random, it was done using some "law-choosing process", but there are many possible law-choosing processes, so the same reasoning applies.
I would say that X is uncaused when finding it a cause requires making up Y such that Y is as complex or more complex than X. That means that it is more economical to consider X as uncaused.
Not having a set of rules mandated by others doesn't make my behavior random. Right now, for example, I'm hitting a very specific set of keys on my keyboard in a particular order, yet I'm not bound by any rules while doing so. I could hit any set that I want to. I just choose to hit the ones that produce English words that I happen to be thinking. No rules by me or anyone mandates I don't type words with no meaning fdsufila, safuleakf dsioenrnke ,s eiuwthlkdsf erohnoiaser.
The laws of physics, combined with the exact configuration of your body and brain, however, do "mandate" you to type what you typed, and if they don't, that's because randomness is involved at some stage in the process. That is what he meant.