of all, causing a lot of job losses and might be monopolies. is ushering in a wave of feelings about how to handle technology and big tech. >> i think that's absolutely right. there were lots of sessions on a.i. and how it will change jobs and lose jobs. that's been a subject for some years. for me the two new elements is there was a really sense of a tech lash, a backlash against tech companies, goggles, facebooks are no longer the shining lights. they are too big, too concentrated and all kinds of people are worried and the number of people that said china is ahead of us in a.i. and we have a real problem. the sense of a.i. is something, part of the geopolitical rift between or struggle between