Here's the YouTube video of a talk I recently gave at UIUC's Reflections | Projections conference. It was a great pleasure and honor to return to University of Illinois after graduating 15 years ago. As I mention in the talk, going to R | P was one of the things that inspired me to go into computer science in the first place while I was a physics student there. Being allowed to speak there years later was a real treat. My thanks to UIUC ACM.