A question of etiquette
I'm always careful to thank people when I follow them in a door and they hold it for me, but what if it's two doors in close succession, as is the case in some office buildings or campus buildings (I'm thinking specifically of the FAU Library here)? Do you owe them one thanks or two? I always feel doofy saying it twice, but don't want to deny someone that which is rightfully theirs?
Yes, I am avoiding doing the grading I should be doing right now. Why do you ask?