This allows Friesian epistemology to accommodate a hermeneutic dimension of interpretation and reinterpretation, with the common sense limitation that the interpretations of synthetic propositions must be recognized as grounded by immediate knowledge in order to be true . The difference between discovery and justification then becomes significant. Discovery is handled by Nelson's theory of Socratic Method . The theory of non-intuitive immediate knowledge frees the Kantian epistemology of synthetic a priori propositions from the narrow confines of the Principle of the Possibility of Experience and from vague appeals to Pure Reason as the ground of the Moral Law. Instead, independent axiomatic systems become possible for varieties of non-empirical knowledge, not just metaphysics but also the multiple value systems of morality, aesthetics, and religion.
Friesian epistemology is basically an internalist theory of knowledge.
No external relationship is available for internal examination as evidence for knowledge. On the other hand, Kantian metaphysics, as follows, holds that external relationships are internal in that the objects of experience are phenomenal contents of consciousness. Thus Friesian epistemology in fact can subsume externalist considerations within itself. This avoids traditional criticisms of coherence, that it allows for no relationship to reality, since reality is in immediate knowledge, and traditional criticisms of correspondence, that it posits a ground of truth inaccessible to knowledge, since phenomenal objects are within consciousness. Thus, on several fronts, Kant-Friesian epistemology passes over into metaphysical considerations.