he was to joel r. roberts of the pictures of his daughter the facebook i applaud his motivation. it makes no sense whatsoever. what can we do to address the challenges. it's a wonderful question working on the grand challenge. kind of as a substitute for humans. look, if you give me a different challenge, tommy the robots that will work with people i see that instead. i like working on tough problems. you guys specified that you have a problem. we have these wonderful online competitions in context and tournaments' that motivate huge amounts of effort, and the single idea that we have come up with, let's use these things, these motivating tools to point to the technology in that direction, again, close the spread, but labor back into the economy, help but these challenges. >> we are getting pretty close to the end here. maybe we can try and figure out a way to a go out looking forward. a lot of parents in here are -- they have college-age children. i am myself. a lot of people are wondering what i tell my kids to do, where do i steer them to thrive in this second machine age. a l