One thing that the earlier documentary on Theranos, The Inventor, made obvious is that Holmes is pretty charismatic at a personal level. At one point, Gibney is trying to interview her, but the camera he’s setting up isn’t working for some reason, and he’s apologizing. She says “it’s alright” and then leans in and says “we’re going to get through this” and smiles. It’s very warm. It was easier to see how people bought into her and her vision after that.