I was a postdoc at JILA when Debbie first showed up here. Once in the corridor, I bumped into Eric and Debbie playing with a lens. Eric was showing Debbie how to determine the focal length by projecting ceiling lights onto the floor. You see, Debbie did her Ph.D. thesis in solid state physics and had to learn experimental optics from scratch. Whenever a new student or a postdoc is unsure when faced with a table full of optics, I tell him or her this Debbie story, how she learned the basics and went on to make one after another fantastic breakthroughs. She has long been and will always be a great inspiration for us.