There are other less non-sensical arguments against the idea that the universe is determined and that there hence is no such thing as "free will" (depending on how you define that of course). One argument that I would not be able to meet completely is that at the quatum level there is the uncertainty principle according to which we cannot know the speed and the position of an electron simultaneously. All I can say is that I don't think this uncertainty translates into free will for human beings...
Another argument against free will is based on chaos theory. Chaos theory states that there are systems in the world which are unpredictable. At least that is what many people think chaos theory states, but this is not entirely true, rather chaos theory states that in some systems, more information about different variables will only make your predictions a tiny winy bit better... Let me explain.
The last couple of decades computers have become alot better and a lot faster. In spite of this fantastic development we have not seen a marked increase in weather predictions even though weather predictions are made by some quite powerful computers. This is because weather is a chaotic system. Very subtle differences in certain variables (humidity, winds and what not), can have huge effects in how the weather turns out. The old way of predicting the weather, "the weather tomorrow will be like the weather today", still comes close to the predictions of the best supercomputers.
Nevertheless, if Laplace's demon did exist i.e. if we knew the exact position of all particles in the universe and their velocity, if we did know that we would be able to predict the weather for as long as we wanted to and thus there is really no contradiction with a deterministic world view. All that chaos thery really means is that some systems are very sensitive to initial conditions and we are not well enough equipped to see these differences...
I have as some of you may have noticed not written for quite some time, the reason is that I have become a father. My daughter Lola was born on january 13th and me and my wife have been very busy taking care of her. We will see how much I write the coming months but my blog is not dead...
