Chic is dead: Paris imports hip from Brooklyn, which lost its cool years ago. So is cool dead? As ever, a live question. Cool requires streetlife, bohemia, affordable rents, cross-cultural exchange, and individuals with expressive style. Social media hunts cool 24/7; bohemian enclaves flip into rich privilege zones within a decade, as in New Orleans. If there's to be a 21st century cool, maybe it's Banksy-style anonymity, maybe the petri dish of Detroit.