Bless you for this,sending on to others who may not have seen it.
I was lucky enough to have instructors like him with a command of the facts, a ready willingness to examine everything and to accept that much of what they did was just like science and put forth a hypothesis and theory and yet open to change as it came because that is the nature of learning, history and education. I didn't do didactic which works in Law but not so much elsewhere. Professor Kingsfield worked until it stopped working and people pretty much rejected the law and threw it out. OTOH, he'd come from a point in time where the law had worked for generations and thought it would last forever. Kind of like the civilizations in the video that thought they would last forever.