As we were finishing this year’s TIME100 AI, I had two conversations, with two very different TIME100 AI honorees, that made clear the stakes of this technological transformation. Sundar Pichai, who joined Google in 2004 and became CEO of the world’s fourth most valuable company nine years ago, told me that introducing the company’s billions of users to artificial intelligence through Google’s products amounts to “one of the biggest improvements we’ve done in 20 years.” Speaking that same day...