Actually, can't we "predetermine" an action? We can do this with electricity. We can either see the particles where they are or predict where they will be, but neither at once.
If you ARE being scientific then you will agree that things are going to happen no matter what (predetermination). People act with no control really. They act apropos to their environment and their previous rules set up in their minds. They can't choose to do anything else but act.
OmnicronDEVIL said that science leads us nowhere. Actually now science is dealing with why humans act the way they are (read up the hedonistic imperitive). Basically, obviously common sense shows us, but now we're understanding the pleasure & want system. The OFC (don't remember exactly the name) makes us stop enjoying something after awhile. People with "addictive personalities" actually have a deficiency here, and their OFC doesn't regulate their pleasure to make them continue ahead.
Oh. And for people talking about REALLY REALLY small things (the quantum physics), you have to apply DIFFERENT laws. Astrologists are now studying far out into space why gravity doesn't obey the "law" within a very small confined area. Whire rabbit is correct in that they don't apply to the laws we've already determined, but they do apply to other laws. There's this cute theory about what happened before the "big bang." Basically, in this tiny tiny area these "colors" acted. It's really complicated and holds no relevance, except that they did obey laws, and thus the universe was created.
So "scientists" are actually onto something. You just can't apply one golden rule to everything as most people are trying to do here.
Oh, and probability is just a way the human mind can break up the prediction of the future. We, ourselves, aren't "smart" enough to understand how everything will act, and thus we create probabilities.
Like throwing a dart at a board sectioned into 4 regions. 25% chance of hitting a region, but 100% of hitting the board. When we throw the dart, we're going to throw it at a certain point. That point is determined because of everything we've learned (how high to throw, where to throw to hit the middle, etc.). So isn't that predetermined? The second we let go of that dart it's going to hit that point no matter what. We just can't predict it ourselves because we only know where it is NOW and where it will be, but not both.