Collective effervescence sounds great, right? Too bad you need twenty-three friends and a bonfire to get it. Or do you? One of the most intriguing facts about the hive switch is that there are many ways to turn it on. Even if you doubt that the switch is a group-level adaptation, I hope you’ll agree with me that the switch exists, and that it generally makes people less selfish and more loving. Here are three examples of switch flipping that you might have experienced yourself.