What Does a Harness Repair? Three Preregistered Studies Around a Longevity-Tuned Language Model.

arXiv:2610.05533v3 Announce Type: replace-cross Abstract: A harness search around a frozen longevity-tuned 1.7B model reported a rescue. An audit found that the gain came from rows the start left unparsed, that the caller sent each row's reference answer as an