The first is the Cartesian solution of grounding scientific rationality on first philosophy, and following Kant to deduce a set of necessary conditions of experience. For epistemology and the epistemology of science, there has been a move towards naturalistic epistemology. For naturalistic epistemology, there is a continuity between epistemology and science. For Quine, the continuity lies in the replacement of traditional epistemology by psychology. For Popper, the continuity is evolutionary epistemology is modelled upon evolutionary biology.
Evolutionary epistemology is an alternative to traditional epistemology.