Police officer, surveilling a Chicago house based on an informant’s tip, develops a “hunch” that a man at the house has drugs in the bag he’s carrying. Oops: He doesn’t! No matter: Eight officers continue detaining the man until the officer develops a second “hunch” that drugs are probably in the house. And bingo: heroin! Sadly, says the Seventh Circuit, the Constitution doesn’t allow officers to detain people while they develop serial hunches about places to search.