Originally Posted by
Antarius
that would require them actually caring to enforce the boarding order.
now we have plausible deniability. Allows 40 people to board group 1 for a 737s 16 seats.

There are, of course, flights where EXP's do not get the upgrade and are in coach. Especially on heavy business routes it's not unusual to have quite a few more people in group 1 than there are F seats.