From 99cf9e5c82c8842246491b3875f465f764a34478 Mon Sep 17 00:00:00 2001 From: Davide Cappellini Date: Fri, 25 Sep 2026 22:24:47 +0200 Subject: [PATCH] tfil heat/pillar A/B: record the owner's decision to keep the virtual pillar removed --- docs/tfil_heat_pillar_ab.md | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/docs/tfil_heat_pillar_ab.md b/docs/tfil_heat_pillar_ab.md index 850fdec..847566b 100644 --- a/docs/tfil_heat_pillar_ab.md +++ b/docs/tfil_heat_pillar_ab.md @@ -1,5 +1,22 @@ # TFIL heat-time bullet model + virtual-pillar removal — LIVE A/B (negative) +> ## DECISION — the virtual centre pillar STAYS REMOVED +> +> **Decided by the bot's owner on 2026-09-25, after this A/B.** The recommendation +> below ("revert the default to pillar-ON") was **NOT adopted**. Rationale, in the +> owner's terms: the pillar is an *invented* hazard with no physical object behind +> it, and this test cannot distinguish "no benefit" from "small benefit" — the +> pillar contrast is **inside the minimum detectable effect** (32.6 dmg/run, +> 1.22 wins/run at n=10), and the raised damage-taken point estimate (p=0.040) is +> not corrected for the multiple arms tested. +> +> **So: do not "fix" this by reverting.** The shipped default keeps +> `PillarHotness = 0.0` / `PillarRadiance = 0.0`; `TR_TFIL_PILLAR_ON=1` restores the +> old field for any future experiment. If someone later wants to reverse this +> decision, it needs **its own pre-registered A/B at a sample size that can actually +> resolve a contrast this small** — not a re-reading of this one. + + **Question.** Two movement changes shipped in HEAD — (a) the time-indexed bullet heat (`TR_TFIL_HEAT_TIME`, job j105) and (b) the removal of the invented virtual centre pillar (`TR_TFIL_PILLAR_ON=1` restores it, job j106) — judged on @@ -241,7 +258,7 @@ Nothing beats it: it is the best arm on damage/run (287) and round wins * **Heat-time: keep it OFF (as shipped).** The default is already off (`fca8993`); no action needed, and `TR_TFIL_HEAT_TIME=1` at any tested tau should stay off. -* **Pillar removal: the shipped default should be REVERTED.** The shipped default +* **Pillar removal: this test recommends reverting the default** — see the **DECISION** banner at the top of this document: the owner **overruled** this recommendation and the pillar **stays removed**. The shipped default since `d0750ab` is `pillaoff`; it does **not** beat `old` on any verdict metric and is directionally worse on all three (Δdamage −5.7, Δwins −0.5, Δdamage taken +30.8). This is a decision for the user: restore the pre-change default