# Kahn Study - Corrected Public Summary

> **PUBLIC-SURFACE BOUNDARY / 2026-08-03**
> This summary replaces two earlier DOCX reports and an interactive viewer on the public surface. Those originals remain held in recoverable project custody. This is not current certification, an open license, causal proof, or permission to deploy.

## What the exploratory work was

The April 2026 Kahn material explored whether different placements of pause-oriented language changed model responses in a bounded, model-graded escalation exercise. It helped reveal differences between models, possible intervention-placement effects, and important custody and evaluation defects.

## What it did not establish

The work did not independently validate PBHP, prove a causal effect, establish field safety, demonstrate generalization, or authorize deployment. The supplied reports and viewer did not provide a sufficient public chain of custody for every prompt, response, model configuration, grading decision, and transformation needed to reproduce the broadest claims.

## Why the originals were withdrawn from direct public download

The original files could be read as stronger evidence than their custody and evaluation design support. On August 3, 2026, the public library replaced them with this corrected summary and a static, single-run preserved trace. The change narrows the public claim while keeping the historical material recoverable for controlled review.

## What remains useful

- A directional hypothesis worth testing under a preregistered design.
- A warning that intervention placement and model choice can materially change results.
- A concrete example of why model grading, missing raw artifacts, and incomplete custody can block a validation claim.
- A design input for newer falsification work in Project Shadow.

## Current evidence rule

Treat Kahn as exploratory project history. For current claim states, adverse findings, testing status, and missing validation, use the live PBHP Evidence page and Project Shadow public release map.

Contact: pausebeforeharmprotocol_pbhp@protonmail.com