In 2004, Sal Khan, then a hedge fund manager, started tutoring one of his cousins when she needed extra help with math. He started recording YouTube videos of his tutorials that he then turned into an interactive global education platform called Khan Academy. Khan is now pushing the boundaries of education even further.His book, Brave New Words, explores how artificial intelligence will transform learning. I sat down with Sal Khan to talk about Khan Academy and his vision for the future of education. I had ...