So I'm back to charts and graphs because they are funny. This time it's the Venn, Venn diagrams represent mathematical or logical sets pictorially as circles, with common elements of the sets being represented by the areas of overlap among the circles. What does this have to do with art? Nothing, but I'll make it fit anyway. I'll start off with the simple models so that they are self-explanatory and get more stupid as I go. I'll just shut up now.