Even if you didn't go to business school, sooner or later you'd pick up the lesson of the railroad tycoons. They figured they had it made, what with their rails criss‐crossing the country. That's why they didn't pay much attention to all the new roads and to all of the trucks that were starting to roll along on them. They just didn't get this new shipping business. They were in the railroad business, after all. That was the thinking that did them in.