Hidden gems, wisdom of crowds, and agent swarms
People call a place a hidden gem when it is good and still obscure. A best-of list, a chain, or a crowd repeating the same tip is what ends the label. An ugly room, cash only, and a non-English menu are how people search. They are not proof. This note turns that observation into a score, then checks the score on a synthetic swarm. It is a design, not a fit to restaurant ratings, and not a user study....