A psychology professor did a little experiment in one of his classes to illustrate this classic finding, it's called the minimal group paradigm. The idea is that you can make people part of a meaningless group and they'll start to develop pro-group attitudes. And hilariously, it turns out that people will accept less money to make sure that the other side of this debate doesn't get more money than they do.
We’re taught that the mark of surefire intelligence is the ability to think and learn. But in his new book, “Think Again,” Adam Grant says that in our turbulent world, there’s a more important skill: the ability to rethink and unlearn. If you can learn how to revise your opinions, check your ego, and admit when you’re wrong, then you’ll be on a path toward wisdom and joy.