Re: Star Trek: DTI: Watching The Clock Review Thread
But since our knowledge of the universal wave equation is incomplete, we can't know the future or the past with certainty. As the Heisenberg Principle shows, there are always limits to our ability to measure. It's in that area of doubt that free will resides.
That's somewhat of a misinterpretation of Heisenberg. It doesn't say that there's limits to our ability to measure, it says that the amount of information you have about one quantity restricts the amount of information you can get about the other by making its value more uncertain physically. Describing it as a limitation of our ability to measure implies that there is some "correct" answer that we can never see, but in fact what uncertainty says is that there is
no correct answer, that the result is basically a role of the dice.
And that's why this seems like a sketchy resolution of the question to me. Heisenberg introduces randomness into the equation, and randomness certainly doesn't abide by any definition of free will that I've ever heard. In fact, it seems to stand wholly against both free will and determinism to me; determinism because it makes things unpredictable, and free will because it removes any aspect of "choice".
The problem to me, though, has always seemed like a false dichotomy, largely because I've never heard anyone define "free will" in a way that didn't either also accord with determinism (by saying that you could make a choice based on your past circumstances), or that threw out any sense of choice at all (by saying that you could make a choice completely independent of past circumstances, since a choice based on nothing at all is no more a choice than flipping a coin).
Think about breaking down the idea of "I could have chosen differently", for example. Either you mean you could have if even some single past aspect of your circumstances and surroundings was different, which is true for determinism as well. Or you mean you could have even with a universe that was perfectly identical in every single aspect, in which case what was the reason you made the original choice at all? It had to have been based on some random element if it was truly made completely independently of every single circumstance around you, and thus it was random, not actually a choice in any meaningful sense.
To me, the universe is both deterministic in the sense that effect follows cause and present events follow based on past events, and with free will in the sense that we can make our decisions under consideration of the past. The two aren't in opposition at all, and the whole reason they were ever thought to be in opposition was because of a 200-year old debate in theology; prior to that point, the idea of the two as opposing concepts was never even considered.
This is an idea on the matter I'd had for a while in a vague sense, but I have to give most of the credit for how I was really able to solidify things to Eliezer Yudkowsky's essay series on the matter at his blog. It's a profoundly insightful look into the issue from a purely rationalist perspective. You can find the essay series
here, I'd definitely recommend anyone interested in the question to read through this; and if you're interested in rationalism, to poke through the rest of the site too.