I also think a human can be much better at influencing people 1-on-1. But adapting his speech to two people at the same time? That's more difficult. There's only so many tricks you can use to have two different people hear what they want to hear. 5 people? 10? 2 billions?

That's the scary thing. Facebook is good enough at influencing someone, but they do it for half the population of the world simultaneously.