Sterling, and Weinstein, This is incredibly interesting! Sterling, you probably Because of your experience as a plumber recognize the correlation of both industries but now years removed and from an MD point of view. I have a customer who is an Eye Surgeon; he had a master shower faucet and hall bath faucet seized due to rusty water. He was so intrigued by what he called my surgical process; which included rubber gloves, a drill bit, and other. My wife is an immunologist. So, while I don't need to work, I do and I charge $125 for the first hour and I feel, I know, what I do is exactly the same as what a medical practitioner does: diagnose. Over time I have realized I will ask the similar types of question that my Doctor will ask me. I can't avoid noticing the comments from Dr Weinstein; relevance? The difference in education between a medical doctor and a master plumber is that the MD Residency is heavily regulated and watched. I don't take home $125 after expenses. My waiting room is 839 sq mi, is not always full, and my patients price negotiate and are skeptical. But after 20 years, I’m a master diagnostician and also enjoy the adulation. and listen for Zebras. Scully.