Immanuel Kant
1724–1804 — transcendental idealism; phenomena vs noumena
Author
Enlightenment philosopher; distinguishes phenomena (as they appear) from noumena (things-in-themselves) — anchor for Rᶜ vs Rⁿ in our Real tier.
Immanuel Kant (1724–1804) argued that human cognition structures experience through categories and forms of intuition. What we know directly are phenomena; noumena (things as they are in themselves) lie beyond direct theoretical access.
What we adopt (partial)
- Phenomena / noumena as a caution against identifying captured experience with unbounded Real.
- Maps to Rᶜ (captured, structured by apparatus) vs Rⁿ (not exhausted by any capture).
What we do not adopt wholesale
Transcendental idealism as a full metaphysics, the synthetic a priori programme, or Kant’s specific table of categories. We borrow the structural caution, not the Critical system.