 I guess I didn't really, I went into physics in high school and I remember the last year of grade school or what they call middle school now. Someone mentioned physics to me and I didn't really know what it was but I thought, I'd like to be that. I want to try to do that but mainly just because people said, that's really hard. And so I thought, I want to do something that's really hard. I didn't really know what they meant. So I'd say I didn't really, couldn't say what physics was until I was in the first couple of years of college and sort of started helping other students do some calculus homework and things like that. I found explaining things to other students was one of the best ways to learn them and I kept that up too, sometimes teaching courses that I hadn't taken myself and trying to stay a step ahead of the students if I could, couldn't always. So it was a very gradual process from just going out and observing nature on my own and becoming a professional at it.