One of my favorite YouTube basketball accounts HoopVision has a great primer on the rise and fall (and evolution) of the flex offense basically invented by Dr. Tom Davis, and used at one point by Providence Coach Ed Cooley. Watching this video is like seeing the Iowa teams of the 80s and 90s, but with different teams and players. Very cool basketball nerd history. (I’m not sure if Cooley still runs flex but the Friars don’t shoot a ton of 3s).