Sure, there are both interesting and practical uses of mathematics. However, venn diagrams are not synonymous with set theory. Venn diagrams are a type of vis

Sure, there are both interesting and practical uses of mathematics. However, venn diagrams are not synonymous with set theory. Venn diagrams are a type of visualization, and once you're dealing with 11 overlapping sets... I don't really see the utility, since these are not human friendly and don't help viewers understand the relationship between sets and their intersections.