Of course, from the perspective of modern science, kant's premise is also wrong, because the development of modern relativity and quantum mechanics has proved that the laws of mathematics and classical mechanics are not "Universally valid"; an unreliable postulat. Hegel later criticized this presupposition position, saying that it would lead to such serious consequences as "The loss of the freedom of thought". But the problem goes far beyond that.
"The unknowable thing in itself" the scary thing is: according to kant, since "Universally valid" knowledge is still inseparable from human experience, and only "Phenomenon" can be experienced, the only possibility is to put abstract "Thing-in-itself". "Ding an sich" (ding an sich) is distinguished from specific "Phenomenon"; human cognition can only take "Phenomenon" as the object, and universality Raster to Vector Conversion and inevitability can only exist in the "Phenomenal world" and in the human mind. As for the "Thing-in-itself"—that is, the "Essence" of things—it lies on the "Other side of cognition," which cannot be achieved by analytical or synthetic methods.
In addition, it is also kant who first distinguishes between "Intelligence" (verstand, also translated "Intellect", "Understanding") and "Reason" (vernunft). He believes that intelligence is an ability between sensibility and reason, and its task is to correctly perceive (wahrnehmen) phenomena and make judgments; cognition belongs to the category of intelligence, and "Transcendental" existence, such as " things in themselves," "God," "Mind," "Morality," etc., are the objects of rational belief. They are unknowable and can only be "Believed". The above-mentioned "Supreme moral law" is the product of this kind of thinking.
