Terri Oda is a mathematician who now works in computer science. She is also female. Weird, right? When people told her women were biologically unsuited to math, she used to draw a graph for them on the back of a napkin showing why this wasn’t statistically true. Because women like napkins. Finally Oda decided to put her napkin doodles into a slideshow with actual graphs, which is the clearest visual refutation of the "women are not biologically suited for math" theory I’ve ever seen. Charts and numbers and stuff: You should check it out.