In simple terms, determinism is that everything is predestined, we are not free; libertarianism is that there are no ordained things. People have the right to choose between many options. If life is a river, as determinism, the river will have no bifurcation; as libertarianism, this river will branch off at any time, and then will flow to somewhere that depends on personal choice. Libertarianism and determinism look like seemingly contradictory, mainly because of free will often relates to the opposite of necessity which are possibility and random. In the macro point of view, Newton 's classical mechanics is an intuitive example of causality. But in the microscopic field, Quantum mechanics can not give definitive predictions of determined