Because as a CEO you dont want to wake up every day to headlines that you are profiting off exploitation of children / nazis / hatecrimes. A probabilistic filte

Because as a CEO you dont want to wake up every day to headlines that you are profiting off exploitation of children / nazis / hatecrimes. A probabilistic filter of best effort moderation does not cut it from a CEOs point of view. The world at large and the media makes a huge hue and cry (often for justifiable reasons) when objectionable hateful content is found on a large network. If you are a CEO you want to bring the possibility of that down to zero. The only way to do that is via dealing with large established players with whom you have signed contracts. Reddit does get this right more than most other places but there are parts of Reddit that Jack might not want to defend in front of Congress. In fact more than Congress, there is an even bigger constituency - advertisers like Kelloggs, Disney, Cadburys. These tier1 brands want a family friendly image and dont want their content shown next to anything possible objectionable. Jacks job is to reassure Disney that their ad will never run next to a tweet that propagates hate crime. How does Jack give this guarantee?