I remember one scene that explains why the system cannot tell you anything beyond the identify of a person involved: the explanation was that there was system logic involved (e.g. a gas station stop correlating with a dead drop), but the creator encrypted the system. I always wondered why they didn't go with "it's a large machine learning model trained on a massive amount of data; it can stochastically alert you to heightened risk, but it can't tell you why, or judge who is victim and who is perpetrator".