It's surprising that this works so well considering that AI-generated AGENTS.md files have been shown to be not very useful. I think the key difference here is that the real-world experience helps the agent reach regions of its latent space that wouldn't occur naturally through autoregression.

I wonder how much of the improvement is due to the agent actually learning new things vs. reaching parts of its latent space that enable it to recall things it already knows. Did the agent come up with novel RL reward design protocols based on trial and error? Or did the tokens in the environment cause it to "act smarter"?