http://edition.cnn.com/2016/11/14/health/depression-teen-girls/index.html
With the expansion of the Internet, we can easily get access to what people really think about. It's full of complains, discrimination, and sneer.
So, when we know the fact, we get to be afraid of talking to others.
In this world, there are a lot of things we don't have to know to be happy.
