Communicating ideas using Venn diagrams and other simple graphics

I am a fan of Jessica Hagy’s Indexed comics on note cards, like this one. If you don’t think that simple graphics can be used to communicate very serious ideas, go look at her Forbes series illustrating Sun Tzu’s The Art of War.

Venn diagrams aren’t used well very often. But recently Jessica has used them with two and three circles, four circles, and even five nested circles like a Matryoshka doll.