Isn't the basis of science built on the proposition that everything obeys a set of rules? As such, there is no free will, there is simply responses to outside

Isn't the basis of science built on the proposition that everything obeys a set of rules? As such, there is no free will, there is simply responses to outside influences which are grounded on some rules. Hence, how can he say there is no algorithm to the way that the particle responds? How can he possibly know? Or is he conducting what could be called "pop science" you know like stuff that people are walking faster today than twenty years ago