"In the first summer of the Iraqi war, on the crabby, sweaty second day of a blackout that shut down the northeast's power grid, I stood in line for questionable foodstuffs in my dark neighborhood deli. It reeked of souring milk. An annoyingly upbeat fellow-shopper chirped, "Cheer up, everybody, we're part of history!" Maybe because I was suffering the effects of allergy eyes brought on the night before by trying to read by the light of lilac-scented candles about a political murder committed around the time of the Spanish-American War, I snapped at him. "Sir," I said, "except for the people who were there that one day they discovered the polio vaccine, being part of history is rarely a good idea. History is one war after another with a bunch of murders and natural disasters in between."