To ring in the Uber IPO, David, Christopher and Joanna team up with WSJ reporter Eliot Brown to explore the vast scope of the newest publicly traded tech giant. Prior to that, they recap Google's I/O conference, and discuss the power of AI chatbots and competent $400 phones. Joanna teaches the world a new technical term which may or may not be safe for work. And finally WSJ reporter Katie Bindley interviews TED Fellow and researcher Claire Wardle about the very serious global problem of misinformation.