I can rattle off the three-letter airport codes for over a hundred airports around the world. Pretty impressive, eh? OK, so it’s useless knowledge. But 35 years ago when I was beginning my career as an airline reservations agent, committing airport codes to memory was essential because one had to enter the right codes into the "green screen" reservations system to book a flight. Today, between commercial airline sites, travel sites and corporate travel agent sites, the vast majority...
