Kant is confusion

After reading Kant's book, I've realized that he is confusing like Descartes. Linking math and metaphysics, using sciences to prove the unproven in his own mind. He thinks cognition belongs all in a unified system with some type of organization. Whether or not we actually see this whole "unified" organized system is no mentioned in this book. Is it in our subconscience? I guess so because of his reasoning with totality, we go through life trying to stride for complete understanding of everything and the organization that goes with it.