As we grow up, we’re often encouraged to think of fear as a weakness, just another childish thing to discard like baby teeth or roller skates. And I think it’s no accident that we think this way. Neuroscientists have actually shown that human beings are hard-wired to be optimists. So maybe that’s why we think of fear, sometimes, as a danger in and of itself. “Don’t worry,” we like to say to one another. “Don’t panic.” In English, fear is something we conquer. It’s something we fight. It’s something we overcome. But what if we looked at fear in a fresh way? What if we thought of fear as an amazing act of the imagination, something that can be as profound and insightful as storytelling itself?

How does paragraph 3 contribute to the author’s argument?
article : what fear can teach us (ted talk)