Chaos theory and doubts about determinism

I’ve mentioned a few times before that I’m not a convinced determinist, at least not of the strict or hard variety.  I have three broad reasons for this.  The first is that I’m not sure how meaningful it is to say something is deterministic in principle if it has no hope of ever being deterministic in practice.

The second is quantum physics with its inherent uncertainties, uncertainties that we know bleed into the macroscopic world by the very fact that we know about their existence.  If they didn’t bleed into the world, how would us macroscopic entities know about them?  (If you hold to an interpretation of quantum mechanics that posits unobservable determinism, see my first reason.)

The third reason is chaos theory, the fact that inherent uncertainties in any measure we might make means that many dynamic systems are indeterministic, even in principle.  Along those lines, I discovered this documentary on chaos theory on Amazon today.  If you have an Amazon account, and an hour to spare, it’s a fascinating show.

If you don’t have an Amazon account, or don’t want to spend an hour on it, this Youtube is a pretty good shorter introduction to it.

Are you a strict determinist?  If so, what do you think about chaos theory?  Or quantum uncertainty for that matter?