Arrow of time (e.g. entropy's arrow of time)

Structural Challenge

This response is paired with its canonical Structural Challenge: Arrow of time (e.g. entropy's arrow of time) (P006) in the Physics Structural Challenge Ledger.

τ response

Evidence route

This response is supported by 6 canonical registry items in the τ Corpus.

• V.C21 — Deterministic dynamism direct problem account confidence: high
• V.D20 — Three Temporal Epochs bridge structure confidence: high
• V.D222 — Export E2: Arrow of Time direct problem account confidence: medium
• V.D223 — Export E3: Entropy Splitting direct problem account confidence: medium
• IV.T91 — Second law via defect functional direct problem account confidence: medium
• IV.P157 — Second-law inversion boundary or nonclaim confidence: medium

Notes

Verification

• Verification routeempirical_accountability
• Verification statuspending_external_review
• External statusexternally_open

External-review boundary

External review of these imported peripheral phenomena; SCL placement marks scope-acknowledgement rather than τ-program priority.

Provenance

• v1 predecessorphys-arrow-of-time-e-g-entropy-s-arrow-of-time (promoted one to one)
• v1 mapping recovered fromf534b3fb^

Status disclaimer

A Challenge Response reports the program's current internal stance against a canonical Structural Challenge. It does not imply external verification, scientific consensus, philosophical settlement, or final proof. Read it together with its evidence route, registry references, verification status, and external-review boundary.