Today while walking across campus I had the sobering realization that many people who were not yet born when I started college will themselves be starting college this autumn. In an effort to spread this sinking feeling around amongst readers older than me, I started college in 1990, when I was seventeen. Whenever I teach an undergraduate class, I ask the students what’s the earliest major news event they can remember. When I started teaching at Arizona, most students could remember the Challenger disaster. Then it was the fall of the Berlin Wall. Then the first Gulf War. Then Bill Clinton’s first-term election. At the moment it is the Oklahoma City bombing. Soon it will be the death of Princess Diana.