I understand the sentiment but propaganda and prediction are vastly different fields. Some of the things they were doing were: spreading misinformation, undermi

I understand the sentiment but propaganda and prediction are vastly different fields. Some of the things they were doing were: spreading misinformation, undermining trust in real information and spreading negative affect. Those all seem more concretely achievable than predicting whether you will like a film that has dozens to thousands of variables around tone, content and aesthetic. They don't really have to change people's political opinions. But they can know what makes people angry and give them more of it. They can know the lie they want to tell and make it more ubiquitous so it's harder to discern from truth. These tasks aren't anywhere near as abstract as predicting your taste in film. It seems like they knew angry people were showing up to vote for Trump, so just give people more of what makes them angry. And give people thinking about voting for Hillary more reasons to be skeptical about her weaknesses as a candidate.