I am an invited speaker for at an NSF-sponsored special symposium, From Brains to Machines, to be held in San Jose, CA. This symposium is part of IJCNN 2011, the flagship conference of the International Neural Network Society. The official title of my talk is How to work towards a mathematical understanding of the brain, but that is really the best academic sounding title I could come up with. What I actually want to talk about is How to build a brain without solving it. I hope I get to show some of our recent work at Vicarious Systems.