You're expected to respect other people's comfort.
Carlos is flying in economy class on a cross-country plane trip and is sitting in front of a tall man.
Carlos wants to have a more comfortable plane ride.
Carlos brings a special neck pillow and eye mask to use during the flight.
Carlos reclines his seat back, so he can lay backwards comfortably.
Carlos and his neighbors all complete their flight with minimal discomfort caused by others.
Carlos gets in the space of the man behind him and causes him to have a cramped and uncomfortable flight.