Quote (kepkep @ 16 Nov 2009 20:49)
Human "choices" are the result of chemical reactions taking place in the brain. You're just a complex biological machine, nothing more. I know that sounds cold, but free will does not exist. Given sufficient information (google the book Single Neuron Computation, and single neuron dynamics) you could predict exactly how an organism's life will turn out.
True free will would negate cause and effect. Ultimately we're all just a very complex system. Free will is our personal experience of a system too complex for us to reliably understand.
Yes, a couple philosophers thought that in the 18th century... It's also a favourite discussion topic.
But since our universe is based on random events, it is quite unpredictable. Random means that at least two outcomes for one cause are possible. Randomness exists on every level from stars, to dice to electrons. There is a famous Einstein quote, where he finds this very fact quite ironic. We live in a universe where one cause can have more than one possible effect, maybe because conditions can never be the same.
Free will works basically like this, our encounters and ideas are sometimes random and we also make somewhat random choices about them. However a lot of stuff is hardwired into us via genes, upbringing, habits, peer pressure which makes free will decisions a rather rare occurrence.
But if you make a decision and always make a rational choice, then you would act like any other rational person would.
Free doesn't mean original or spontaneous. Free means - free from influence of someone elses will, like the "will" or rather the hardwiring of your genes to procreate for instance.