i recently spoke with casey newton, silicon vall editor for "the verge," who reported on the toll this much of our political discussions now take place o social networks, then the folks who are moderating this content are essentially first responders. they're on the frontes, and we've entrusted them with these really fundantal questions of safety and security. and while we've given the voluminous guidelines from which to apply the policy, the truth is that some of these are always going to be judgment calls. i had moderators tell me about cases where they would be told to take a post down, and they would do that, and then laterld they we told, "oh, no, no, leave it back up," and then hours later take it back down again. it's that kind of inte of a decision-making process. it's very fast. luid.very f and folks just change their minds. so it's incredibly difficult work tha a of course, so very low paid. >> sreenivasan: these are just a few thousand people in one location or another. but they're not actually going agesand seeing all the p that exist on facebook. that would be impossible.