SO MUCH OF WHAT the researchers learned in their interviews that week was only an elaboration of what Yutzy’s driver had told him shortly after he touched down: everybody in Anchorage had done a little bit of everything for everybody. It was startling, and cut against conventional wisdom’s predictions of savagery and hysteria. Yet for Enrico Quarantelli, it seemed only to be concrete confirmation of a wild idea he’d discovered years earlier.

