“Flow” Only Got a Name in the 1970s
The feeling of being completely absorbed in an activity, losing track of time, only got an official name in the 1970s, through
An Ordinary Dog Understands About 165 Words
Canine psychologist Stanley Coren estimates that an average dog understands around 165 words or signals, while the smartest
Why You Can’t Realistically Have More Than 150 Close Friends
British anthropologist Robin Dunbar proposed, in the 1990s, a now-famous figure: roughly 150 stable social relationships the human brain can