John Regehr is a computer science professor at the University of Utah. His research is on making software fail and on making software that fails less often. Lately, he is obsessed with compiler bugs and integer overflow problems.
Sean Bennett is a Course Architect at Udacity and is passionate about using the web to improve the quality of education available worldwide. Sean's background is in web programming, and he likes to dabble in functional web programming. When he's not working to improve education, Sean likes running, hiking, and preparing for the inevitable zombie apocalypse.