Jessica Hagy is a cartoonist and writer best known for her insightful and hilarious webcomic Indexed, in which she draws charts and Venn diagrams connecting completely different ideas and getting us to think about them in different ways.

Her latest book is The Art of War Visualized. It's the Sun Tzu classic reworked and with illustrations.

During a recent stop in Chicago, we spoke about her career change from copywriter to professional author/illustrator, where she finds inspiration for her work, and how her cartoons made their way into my math classes.