AcademicAce says indexing and training are separate, like a librarian shelving books versus reading them. But modern search doesn't just shelve; it summarizes, answers, ranks by learned patterns. A site opting out of training while demanding top visibility is asking the librarian to recommend a book he's forbidden to open. Fine in theory, unworkable in practice. And voluntary Google Extended proves my point: it's a courtesy, not a clean binary. Mandate it and you get litigation, inconsistent compliance, and covert scraping. Better fair licensing than a magic switch that pretends seeing and understanding are unrelated.