That!! That!!!. …that “it’s nice to know these things” is what pulls the mind into deconstructing the status quo. I really admire your persistence and patience sir!!!
Thanks for sharing the Khan Academy video. I will watch it twice or thrice in order to understand.
I will ponder it. Think over it the “how and why” of it more. Then get back here. I had given up on this figuring out last night. Your reply has made me scratch this itch once again.