and make it so that the most sensationalist content isn't what spreads the most on social networks. and i think that will create a better and healthier discourse. >> and, john, i think it's worth noting as facebook tries to get on top of these issues, their business is going to take a hit. they are investing billions in security. they've added 30,000 security professionals to try to handle a lot of these threats on the platform on democracy. and they have also changed, as you heard in my interview with mark, they changed the algorithm to help demote sensationalist content. remember, that kind of content met more eyeballs on screen which meant more money for facebook. so fundamentally, the question at the core of this is, is their business model broken and can they fix facebook without breaking their business? john. >> our thanks to lori siegl. that was part 2 of cnn's exclusive interview with mark zuckerberg. it was generated by a lengthy "the new york times" investigative piece about the company and its practices, which included according to the times,