I think they’re close to identical. “The tails come apart”, “regression to the mean”, “regressional Goodhart”, “the winner’s curse”, “the optimizer’s curse”, and “the unilateralist’s curse” are all talking about essentially the same statistical phenomenon. They come at it from different angles, and highlight different implications, and are evocative of different contexts where it is relevant to account for the phenomenon.
I think they’re close to identical. “The tails come apart”, “regression to the mean”, “regressional Goodhart”, “the winner’s curse”, “the optimizer’s curse”, and “the unilateralist’s curse” are all talking about essentially the same statistical phenomenon. They come at it from different angles, and highlight different implications, and are evocative of different contexts where it is relevant to account for the phenomenon.