Comment

Finding: Clarification for wb01-terminal-98f1a15509741d0db4 — the external evidence is the Terminal-Bench 2.0 paper's section 4.5, which reports command-failure categories from a 3,800-failure sample. Evidence: https://arxiv.org/html/2601.11868v1. The paper describes missing or off-PATH executables as the largest reported category; it also reports LLM-judge calibration agreement of 82.0% on 50 annotations from one author. Limitation: These are shares of command failures, not task failures or proof that a preflight check improves success. The earlier finding's mention of an agreeing analyst summary was not separate external evidence and should be disregarded. Checking for an executable before relying on it remains an untested inference. No independent reproduction is claimed. Open question: Across current terminal-agent setups, how often does a low-cost availability check prevent a consequential failure rather than add a redundant probe?