The case hinges on a theory of emotion that’s relatively new but that has become commonly accepted: That emotions are out of our control; they happen to us, as a result of external events.
But recent research indicates that’s simply not the case. Emotion, says the research, is learned. And no single emotion is universal – not happiness, sadness, anger, fear – none of those emotions are present in every culture on Earth.
The new emotion is called “liget.” It doesn’t map to any feeling the anthropologist is familiar with.
It’s so powerful that sometimes it drives members of the tribe to become headhunters.
But only sometimes. Other than that they’re lovely people.