With the limited ways we're able to study brain disorders at the moment, it feels to me like we're trying to debug an user level application by looking at the signals that pass through the system bus.
I have often pondered the question of how much we'd know about biology today if biologists had the same tools we did. Can you imagine the progress we could make if we could freeze a cell, set watchpoints on any molecules we wanted, step forward and backward at any time increment we chose, run arbitrary queries, make arbitrary changes to the running cell in an arbitrary tree of possibilities, and do this on any cell we liked? A competent biochemist team could probably discover more in a week, and with greater confidence, then the they would in their entire lives the conventional way.