If you are in a crowded airplane, flying in coach, is it okay to lean your seat back? If you’re in the middle seat, should you just assume you get at least one armrest as your very own? And which one? Both? What if the schlub beside you won’t give up the space?
Suppose there is one reasonably large piece of cake remaining; I cut it into two pieces, and then politely offer to let you take your pick of the slices. What should I do? What should you do, given what I did?
There are no written rules that answer these
