Self-improving agents still need humans

Goodhart's law is the benchmarker's curse: when a measure becomes a target, it stops being a good measure. Coding-agent benchmarks are almost designed to trigger it. The tasks are public, the result is one number and the leaderboard inevitably fills up with harnesses that are, often without meaning to be, overfit to the benchmark. That does not make the go-to standard Terminal-bench useless, but…