> it would be easier to reliably implement the "reading reactions, and understanding what each of those 12 people needs to hear to have them act like he wants"

> it would be easier to reliably implement the "reading reactions, and understanding what each of those 12 people needs to hear to have them act like he wants" part Come to think about it. This part can be valuable, even as a startup. You get mock juries, you act out legal cases in front of them. You collect every single thing the actor lawyers say, and how they say it, and you also collect full transcript of their deliberations. You model the data, and then you sell the services to lawyers. They can practice in front of your model jury initialised with what can be known about the real jurors and can see traces of their deliberations. Not just one run of the model, but many runs if they want to.