Uses empirical evaluation and an archive of discoveries for open-ended agent evolution.
Schmidhuber's Gödel machine rewrites itself only when it can prove the rewrite is an improvement. Proof is the part that has never been practical.
This system drops it. A coding agent edits its own codebase, and each edit is judged by running it on benchmarks. Every variant is kept in an archive, including the ones that lost, so the search can branch from them later.
Scores on SWE-bench and Polyglot climb over successive self-modifications. The archive is doing the work an open-ended search needs: keeping the material that looks useless now.