tristan harris, he says big tech companies knew the risks of a.i., let's take a look. >> the people who very beginning. unlike social media where mark zuckerberg didn't say, you know, if we did this -- build this, it might ruin society. but every one of these ceos have known about the fact that there are existential risks for humanity since the beginning. >> yeah. of julie, uh-uh think -- i think one of the things is they think if you create it, they have to use it. i don't care if the a.i. exist, just don't put it in changer of things. it's like robocop -- [laughter] don't give the robot a gun, okay in maybe we'll be okay. so is that the problem? don't turn things over to the a.i. >> you think it's bad now, the white house has just named kamala harris as a.i. czar. what the heck? what is she going to do? she herself is a robot. [laughter] it could be possible that she, in fact, will identify with a.i., and so she actually might make some good out of something that she's been assigned. >> she has the artificial part down, just not the like, i wond, like, intelligence will wail finally g