 5. Neo-Kantian philosophy of science is distinctive in its focus on the methodology of science. Thus, Neo-Kantian philosophy of physics is not so much concerned directly with what matter is, but with how mathematical physics comes to know about matter. Neo-Kantian philosophy of history is not concerned with grand theories concerning what drives history, but with what makes the methodology of a historian different from that of a physicist or empirical psychologist. Philosophy of science, for them, is the logic of the sciences—in the extended sense of “logic” that includes theory of knowledge and scientific methodology. And, true to their anti-psychologistic conception of logic, Neo-Kantian accounts of scientific methodology are not intended to be empirical descriptions of what scientists do, but accounts that identify objective norms, or the fundamental principles and concepts of a particular  science.[7]  Philosophy of science thus becomes a second order discipline, different in kind from the natural sciences (thus avoiding naturalism). But because Neo-Kantian philosophy of science adheres to the transcendental method, it avoids the errors of speculative metaphysics. It does not, for instance, try to derive the concept of matter or life a priori, but is content to demonstrate that these concepts are necessary conditions for physics and biology. Since philosophy of science for the Neo-Kantians is a second order discipline, they were in general committed to a non-revisionist attitude. According to Rickert, philosophy 