Clear and concise instruction is the nexus of teaching, but reaching that goal is easier said than done. There is many a talented Director, DP, First AD who can perform their job and get the desired result. But it takes a certain talent, and a good deal of introspective thought to create a lesson from that experience so that others may profit. Rick Wise is one of those people. Well done on your piece about shadows!
It is refreshing to read about the techniques outline here from a true professional who knows the art of lighting. I have the ultimate respect for this craft and commend you for taking the time to open the minds of the faithful creative cow members to your expert experience. Lighting has always been and will always be a passion of mine.