The amount of pain still caused by things like somebody back in the sixties deciding that two characters is plenty to encode every single airline ever is still

The amount of pain still caused by things like somebody back in the sixties deciding that two characters is plenty to encode every single airline ever is still felt to this day. Witness the majesty of the "controlled duplicate": https://en.wikipedia.org/wiki/Airline_codes https://en.wikipedia.org/wiki/Airline_codes