# Results — pure modified inertia is killed as a *lone* leftover replacement

### Photons see extra \(\Phi\) · superfluid DM died on the same logic · two-seat inertia not vacated · not a \(\mu(x)\) shop · no CDM input

**CPT Framework — FT-GAP-B-OUTER / FT-SCIAMA-CASE / FT-NO-CDM-INPUT / FT-SUM**  
**Date:** 2026-09-22  
**Status:** **BANKED** · `PASS_FT_MA_LONE_KILL_PHOTON_PHI`  
**Stimulus:** User — pure modified inertia killed as lone replacement; photons see extra potential not inertial softening; SFDM killed the same way; still real physics in a larger picture  
**Parents:** FT-GAP-B-OUTER · Mistele, McGaugh & Hossenfelder 2023 · FT-LENS-RAD · FT-WBS-EFE-VEC · FT-SCIAMA-CASE-NEXT  
**Script:** `scripts/investigations/s3_geometry/ft_ma_lone_kill.py`  
**Data:** `scripts/investigations/s3_geometry/data/ft_ma_lone_kill.json`

Tags: **[E honesty]** · **[Programme]** · **[O residual]** · **[CAT-EVID]**

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## 0. One-line

> **Yes.** The lone replacement \(m_{\mathrm{eff}}(a)\,a=m\,GM_{\mathrm{b}}/r^2\) for stars *and* light is **killed**. KiDS stacked shear follows BTFR not Kepler (\(g_{\mathrm{obs}}/g_N\sim 24\)–\(104\) at \(300\,\mathrm{kpc}\)): photons see **extra \(\Phi\)**, not extra \(m\). Superfluid DM was excluded on the same photon logic (it does not bend light). Inner Einstein rings stay baryon-capable at high \(g\) — that window never needed photon inertia. Two-seat / EFE / WBS language is **not** vacated; it is no longer allowed to be the whole leftover. \(\mu(x)\) is not derived. CDM is not an input. Floor stays parked. Clusters unpaid.

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## 1. What is killed, what is not

| Claim | Status |
|-------|--------|
| Lone \(m(a)\) with Newtonian baryon \(\Phi\) explains the RAR **and** galaxy–galaxy weak lensing | **KILL** (FT-GAP-B-OUTER) |
| Photons see extra \(\Phi\) at \(a\lesssim a_0\) | **YES** |
| SFDM as MOND kinematics + GR photons | **KILL** (same photon split) |
| Inner \(\theta_E\) needs halo-like photon inertia | **NO** (baryons) |
| Slow-tracer EFE / WBS / Leo I–II / Cetus | **still CAT-EVID clothes** |
| \(\mu(x)\) fitted as the extra \(\Phi\) | **NO** (not a shop) |
| CDM species as the extra \(\Phi\) | **NO** (FT-NO-CDM-INPUT) |

**Finding K1 [E].** Circular \(v(r)\) could not split \(\mu\) from \(m(a)\). Photons can. They chose extra field, not extra inertia, at the RAR radii.

**Finding K2 [E honesty].** “Real physics in a larger picture” is licensed only as **additional** slow-tracer structure (vector \(L_a\), EFE) on top of whatever sources the extra \(\Phi\) light already sees. It is not a resume of the Sciama floor as the leftover, and it is not a \(\mu\) interpolator mill.

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## 2. Integrity

| Gate | Verdict |
|------|---------|
| User reading on photons | **YES** |
| Lone \(m(a)\) replacement | **KILL** |
| SFDM same kill | **YES** |
| All inertial physics dead | **NO** |
| \(\mu(x)\) derived | **NO** |
| CDM input | **NO** |
| Floor un-parked | **NO** |

**Exit:** `PASS_FT_MA_LONE_KILL_PHOTON_PHI`

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## 3. One-line for agents

> **§FT-MA-LONE-KILL: pure \(m(a)\) cannot be the lone leftover; photons see extra \(\Phi\) (KiDS); SFDM died the same way; two-seat inertia may remain in a larger picture; no \(\mu\) shop; no CDM; floor parked.**