Transport Papers T14. Dark Matter and the Arrow of Time

T14 of the Transport Papers. Version 1.0. 50 pages. Epistemic status: Tier C. Transport runs in eight parallel towers, the residues of the real Clifford clock. At the dimension nearest four (a flagged premise) two towers are sterile, r = 4 with no time and r = 0 with two (an imported fork): six populated, five dark. The residue is soldered, not algebraic, so the one metric superselects tower charge: exact stability, given the sector decomposition and the imported wall displacement. The mirror tower is proved a copy of whatever the Standard-Model paper derives, every input reversal-invariant: a second Standard Model, one visible share to half a percent, given the descent's one orientation. The orientation bit is the chirality of the pure spinor, its two halves in opposite families only at shadow dimension a multiple of four: the odd residues have no bit on any window, the even ones do at P3's representatives, so asymmetric dark matter is exactly the mirror tower, cold and dissipative. The four odd towers carry no asymmetry; their symmetric relic needs a coupling rule the series lacks and lies outside this paper's scope. The mirror's share is the testable claim: already a quarter above the published bound on mirror matter in galaxies, and tenfold over the Gaia disk bound if the mirror gas settled into a thin disk. The same bit that selects matter over antimatter is argued to be the arrow of time, assuming the paper's three-way classification of arrows is complete. Five premises and a hypothesis are attacked, six refutation conditions costed, every identity script-checked. Position in the series: Within the series it relies on T01, T03, T04, T05, T06, T07, T08, T09, T10, T12, T13, T16. The series is surveyed in T17, The Transport Programme, whose status table records every paper's tier and check count. Verification: verify_T14.py checks every computational identity in the paper in exact rational arithmetic (94 checks, all passing at deposit). It imports GA.py, the series' shared exact-arithmetic library, deposited alongside so the record is self-contained. Run with a bare Python 3: python verify_T14.py. Files: T14_dark_matter.pdf; T14_dark_matter.tex; verify_T14.py; GA.py; LICENSE-CODE.txt. Licence: the paper (PDF and LaTeX source) is CC BY 4.0. The code files in this record are additionally released under the MIT licence; see LICENSE-CODE.txt. Authorship and disclosure. The founding idea of the series is the author's: that division by zero in a Clifford algebra should be read not as a prohibition but as a transport into a higher-dimensional algebra, and that the transported division need not be accompanied by an inverse operation. The direction of investigation and the critical review of the results are likewise the author's. The mathematical development and the drafting of the text were carried out in extended collaboration with Claude Fable 5 (Anthropic), an AI system.