>> tell us how you use it. >> i thought i was fairly disciplined about this, and i was wrong. when i began to get the data, i found i was spending a lot more time than i should. >> like where? >> i don't want to give you all the apps, but just too much. and ask themselves if they're picking up their phone ten times an hour or 20 times an hour, maybe they could do it less. >> there's this idea, who is in control, man or machine. you believe that we as human beings can control? >> i absolutely do. i don't subscribe to the machines taking over the world. and i don't worry about that. i worry much more about people thinking like machines. >> do you think that tech companies are in a position right now where they can self-regulate some of these more sticky issues? >> well, that's a big topic. generally for me, i'm not a big fan of regulation.