Yeah, that was Bill Gates' answer. He takes "classes" all the time. @4:35 http://www.bloomberg.com/news/videos/2016-10-17/the-david-rubenstein-show-bill-gate

Yeah, that was Bill Gates' answer. He takes "classes" all the time. @4:35 http://www.bloomberg.com/news/videos/2016-10-17/the-david-rubenstein-show-bill-gates http://www.bloomberg.com/news/videos/2016-10-17/the-david-ru...