• When you think about Uber and Airbnb and the other companies that are turning things upside down, Uber isn't big 'cause they ran a lot of ads. They're big because someone took out their iPhone and said to their friend, watch this, and pressed a button and a car pulled up.

    "What Makes An Idea Go Viral?". "TED Radio Hour" Interview with Guy Raz, March 4, 2016.