Besides, recent research might suggest that fruit flies have free will. If they got it, you gotta think we got it. The study, from May 2007, involved placing fruit flies in containers with no stimuli to which to respond. The fruit flies, though, made left and right turns that, statistically, were not random. The flies’ behavior, then, was neither the result of their biological nature, nor responding to their environment. One of the researchers claimed:
(H)is experiments showed that if his subjects were told not to move a finger, or to stop moving it, their conscious will would maintain complete control - "could veto it and block performance of the act," as he described it.
I guess it should be noted that this is the nature of all science. You don't 'prove' anything. You simply eliminate alternative (testable) explanations.
We show free will ‘can’ exist, but we do not ‘prove’ it does…Our results eliminate two alternative explanations of this spontaneous turning behavior that would run counter to free will, namely randomness and pure determinism.