The Bystander Effect

There's the classic example of bystander effect where there's a number of things going on, but one of them is like, you can look calm and unperturbed. And since everyone's kind of trying to do that a little bit, then like somebody collapses in front of you on the street and like, you look cool because I'm a cool, composed person. Therefore, everyone assesses that it's not emergency because no one's ever reacting. So appearing unsurprised even when you are, or pretending to yourself that you weren't surprised, is both personally detrimental and socially detrimental. It has negative effects on the rest of society when you act unsurprised on purpose.