ARGH https://validator.w3.org/feed/docs/rss2.html The agent remembered the past and forgot the mission. The test was green because it never tested the real system. One user’s message could leave through another user’s connection. The monitoring system became the performance problem. The safety control disappeared at exactly the wrong moment. Silence was interpreted as approval. The system timed out. The expensive work kept running. “We found nothing” really meant “we could not read the data.” The work was finished. The user received nothing. The conversation survived. The environment did not. The fix existed. Users were still running the bug. One crash became seven. About ARGH Lessons Stories ARGH Newsletter The Harness Book Baseline T0 — September 3, 2026 Evidence & Sources Dernière édition qxq Hello world!