You've seen the claim in every Ruby thread for the past year. Ruby and Rails are the most AI-friendly stack. Fewer tokens, less hallucination, the model just writes it cleanly.
Half of that claim I'll concede without a fight. The other half I measured, across thirteen real Ruby codebases, and that's where a line shows up, sharp enough to put every repo on one side or the other. Including yours.
The half that's true: writing Ruby is solved
Start with the part that holds up, because it really does.
A model that has seen ten thousand Rails apps knows where the model lives, where the job goes, what a concern does, what has_many implies, before it reads a line of yours. Convention over configuration was always written partly for the next human reading the code. It turns out the model is the next reader too, and the conventions answer half its questions before it asks them.
