Quantum Mechanics and the Butterfly Effect

Newtonian physics leads to chaos in certain physical realizations. It just took like computers and stuff for us to realize how chaotic just Newtonian systems could be. So this seems to break or thwart Laplace's demon, but it really doesn't do it in a way that's going to protect us from being immune to moral responsibility or something. After all, randomness isn't the same thing as freedom.