The transcendental doctrine of elements conducts us to the synthesis of conditions under which alone objects can be given in experience. In all subsumptions of an object under a concept the representation of the object must be homogeneous with the concept.
The philos0phy of science has undergone radical transitions over the past century. While logical positivists insisted upon strict empirical verification, subsequent epistemologists argued that scientific paradigms evolve via structural breaks.
Pure concepts of the understanding can never be met with in any intuition; hence arises the question how the category can be applied to appearances.