I. Kant: Setting Boundaries
Kant’s “Copernican Revolution” revealed the boundaries of human reason. He used “glasses” as a metaphor:
- Phenomenal world = Cognizable
- Thing-in-itself = Incognizable
Reason constructs the experiential world through categories and intuition, but cannot directly grasp the thing-in-itself. The Critique of Judgment further explains the “bridging method” between phenomena and the thing-in-itself, but this is not intuitive cognition, rather a possibility of connection.
II. Hegel: Breaking Boundaries
Hegel was dissatisfied with Kant’s “boundary theory.” He proposed dialectics:
- Contradiction drives the development of reason
- Negation of negation = Transfinite iteration
- Reason continuously polishes the glasses through “sublation” (Aufhebung).
Hegel’s conclusion is: the Absolute Spirit can ultimately make the glasses 100% transparent, and the thing-in-itself fully manifest. In other words, he believed reason would eventually break through the limits set by Kant.
III. Gödel and Turing: The End and Transcendence of Formalization
Gödel and Turing transformed philosophical problems into mathematical logic and computation theory.
- Core correspondences: Formal system = Kant’s phenomenal world
- Completeness = Thing-in-itself
- Consistency = Non-contradiction
- Computability = Cognizable
Key results: Gödel’s incompleteness theorem: Any sufficiently powerful and consistent system must be incomplete → Kant’s “glasses” become formalized into a theorem.
- Turing machine: Strict formalization, finite computability → Corresponds to Kant’s phenomenal world.
- Oracle machine: A decision-making bridge beyond the system → Corresponds to Kant’s Critique of Judgment.
- Ordinal logic system: Transfinite iterative boundary expansion → Corresponds to Hegel’s dialectical logic.
IV. A Unified Picture
- Kant: Setting boundaries
- Hegel: Approaching boundaries
- Gödel/Turing: Proving that boundaries cannot be eliminated, but allowing infinite approximation, while introducing an external oracle perspective
The logical chain can be understood as follows:
- Kant — Setting the boundary
- Hegel — Attempting to break the boundary
- Gödel/Turing — Proving the boundary’s real existence, but expansion paths and external oracles remain possible
V. Conclusion
This chain of thought shows:
- Kant = The boundary setter
- Hegel = The dialectical expander
- Gödel/Turing = The formal proof-givers
From philosophy → to logic → and then to computation, human reason always unfolds between finitude and infinite approximation.