- The question of whether we have free will is a complex one, and there is no consensus within psychology as to whether we really do have free will — although much of our field seems to assume that we don't¹. If we did not have free will, then a scientist who was able to measure all of the determinants of our behavior should be able to explain 100% of our behavior¹. However, some physicists say that it is impossible for free will to exist because the laws of physics suggest that the future is predetermined³.
As for your choices, rejecting causal determinism might require rejecting established physical laws (science)¹. Accepting compatibilism means agreeing that even a person brainwashed by a hypnotist acts freely¹. Accepting hard determinism means believing that we have no free will but believing, at least in practice, that we do have free will¹.