It was on an old thread that got re-boosted recently. Somebody I don't talk to very often requested it. I'll post it tonight. It's too long to post in one piece. I will probably have to do it in two or three sections. WARNING: It's a couple years old and probably very basic and even flawed compared to if I re-wrote it now, but I will go ahead and do her.
I would like to redirect those of you interested in the essay to The Cross-Arm Defense Essay, which I just uploaded.