Hey Jim- less hard science in Part 2, I took a simpler, more human approach. Which, scientifically, is a little meh, I'll agree. But to the thousands of folks who do these assessments on our programs as a small part of what we do, powerful insights tend to be revealed in the rather simplistic explanation of how humans develop. They get that. On the other hand, the science is still really in it's infancy to explain this in all its full complexity, much as we might try. Guys like Jed get the story in its simpler version, though :-)