It's just the way it is. Analysis can yield results. When they investigate an outburst, workers might find that he had a seizure the night before. Other times, it yields only more mystery. In response to so many unknowns, Paul adopts an extraordinary openness of spirit, a willingness to use whatever tools are at hand to render Sheldon's world more engaging, more instructive, more way cool.
Music is crucial.
Sometimes Paul works on his laptop with Sheldon, showing him the wonders of the world. Here, push the button. A cowboy herding cattle appears. I'd say cow. Paul is consistently there for him, a hand on the shoulder, a tug toward a door.