The main argument between Jacob Fries and Hegel is about how to get beyond Kant's iron wall between ''what's out there'' and what is ''in here''. To Fries this is by immediate knowledge which does not come through reasoning through any principles nor any senses. [This includes space and time which to Kant are synthetic a priori. ] To Hegel this is by the dialectic process of what is commonly known from Kant's phrase thesis anti thesis synthesis.
To a large degree, Kant was taken in by Hume who limited pure reason to detecting contradictions in concepts. He repeats this limitation often enough but strangely just assumes it from his experience from teaching Euclid. but that is not to say that there i no difference in types of reasoning from unpacking definitions to reasonable assumptions.
