Metaphysics Structural Challenge Ledger
Compact set of philosophical and metaphysical burdens that test whether the τ-framework can generate a coherent reflective world: ontology, knowledge, mind, and commitment.
Metaphysics in the Structural Challenge Ledger
A theory of reality need not solve every philosophical puzzle. But it must say what exists, how truth and knowledge attach to reality, how logic and language function, how mind and agency arise, how normativity binds, and where proof gives way to commitment.
Physics is imported broadly because it has a mature public measurement surface. Metaphysics is different. It has no calibration anchor. Its public burden is categorical: ontology, truth, knowledge, logic, mind, consciousness, normativity, religion, and the boundary where proof gives way to commitment.
Public philosophical problem lists are used as raw source feeds. A problem enters the canonical E₃ ledger only when it tests the framework’s register architecture, ontic-narrowing requirements, phenomenological correlates, proof-theoretic structure, or commitment boundary.
Four canonical clusters (29 challenges)
| Cluster | Range | Focus |
|---|---|---|
| Ontology, modality, and reality structure | M-E3-01..10 | Being and the question of why something rather than nothing; ontic adequacy and the six ontic requirements; universals, properties, and structural positions; objecthood, individuation, and boundary conditions; identity and persistence; mathematical objects and abstract reality; realism, anti-realism, and structural realism; modality, possibility, and counterfactuals; causation and lawhood; time, temporality, and persistence. |
| Knowledge, truth, logic, language | M-E3-11..18 | Truth, truthmakers, and coherence-correspondence; knowledge, Gettier, and epistemic luck; justification regress, criterion, and Münchhausen; induction, underdetermination, and scientific inference; demarcation and the boundary of science; implication and material implication; vagueness, sorites, and boundary indeterminacy; meaning, reference, language, and intentionality. |
| Mind, consciousness, selfhood, agency | M-E3-19..24 | Mind-body relation; hard problem of consciousness; qualia and phenomenal character; personal identity, selfhood, and narrative continuity; free will, agency, and responsibility; cognition, AI, and artificial mind. |
| Normativity, religion, commitment boundary | M-E3-25..29 | Moral knowledge and normative truth; moral luck, control, and responsibility; dignity, normativity, and the categorical imperative; God, Logos, religion, and ultimate reality; proof, commitment, and the no-forced-stance boundary. |
Architecture
Metaphysics items are routed through Book VII’s four readout registers (Reg_E empirical/observational, Reg_P practical/normative, Reg_D diagrammatic/proof-theoretic, Reg_C commitment) and the six ontic narrowing requirements (OR1 self-coherence, OR2 completeness, OR3 generativity, OR4 independence, OR5 continuity, OR6 stability).
Active construction
This domain ledger is in active construction. The four-cluster curation, register routing, and ontic-narrowing requirements above are canonical; detailed per-challenge items will appear on this page as the construction spine reaches each cluster.
For the program-wide framework, see the Structural Challenge Ledger overview. For τ’s metaphysics-side results, see the Metaphysics results hub.
What this ledger does not claim
- It does not claim τ has resolved any philosophical problem.
- It does not assert philosophical consensus on any τ stance.
- Where proof ends and commitment begins, the framework recognises a boundary rather than overclaiming.
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