“1) It’s a distorted view of the world. Hearing your own views and ideas reflected back is comfortable, but it can lead to really bad decisions–you need to see the whole picture to make good decisions.
2) It can limit creativity and innovation, which often come about when two relatively unrelated concepts or ideas are juxtaposed.
3) It’s not great for democracy, because democracy requires a common sense of the big problems that face us and an ability to put ourselves in other peoples’ shoes.”
If we only read those we agree with we’ll never have new ideas or make pregress.