It wouldn't shock me to learn that the majority of people stepping off a commercial airliner, if interviewed, couldn't tell you whether they'd just been on a 73

It wouldn't shock me to learn that the majority of people stepping off a commercial airliner, if interviewed, couldn't tell you whether they'd just been on a 737 or a Tu-204. It would be like asking me what model of bus my city uses, I haven't the foggiest clue.