Concerning the Noumenon, or Kant’s Thirteenth and Fatal Concept of the Transcendental Analytic

The paper provides a detailed reconstruction of Kant’s deduction of the concept noumenon at the end of CPR’s Transcendental analytic with the final aim to undermine the view of its unknowability. According to our initial premise, the contradictions, faced by Kant’s transcendental idealism, have their origin on the systematic level. The noumenon should, therefore, be understood as a purely methodological entity with reality solely within the system of transcendental idealism or as a “conceptual gate,” that functions as system’s entrance and exit and preserves its connection with its philosophical “other” – the realism.