Definitely my wife Annika. Her way of thinking is so different than mine. I can 'do things', but she can think about things that might be able to be done. Her starting point is never the pragmatism. As a result, I have learned how to be much more willing to fail... a bunch... since first ideas are rarely great. She makes fun of me because when I first started here, I spent an entire weekend building 25 mini catapults for use in a lab. And after using them once realized that the device didn't work and ended up chucking the entire thing. So I am working at prototyping more, both with lab devices and with classroom process & curriculum, to make that try-fail-repeat process faster. And I am learning to not start with pragmatism. I'm not very good at it yet, but she is a good model for me to emulate.