There is a relationship between “is” and “ought” — that what is, determines what one ought to do. Because people think that science identifies the “is” and philosophy says what we “ought” to do, that science (the “is”) determines philosophy (the “ought”). This is an error because science can only identify what “is” in terms defined by philosophy, and for reasons defined by philosophy. Science is a tool for man to accomplish goals, and is preceeded by philosophic conclusions.