>>>>It is ok; no harm done. As far someone (John or anybody else being MD), I know a guy who works at a major hospitals network (in Boston) as a web master. When I met him (many years ago when he was helping me to install my first ASP.NET app) I saw that his badge said M.D. I asked him if he was a medical doctor and he said Yes. I didn't want to press him as to why he was (and still is) working as a web master. But I certainly wouldn't ask him for a medical advice.
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>>>Doing medical apps, more or less, for the last 20 years, I've met at least three specialists who were tinkering with Fox, no less (if Fox as such was ever intended to be a RAD tool, the doctors were the target demography), all of which were writing an app to use on their job. One of them even tried to sell it to my then team - after he already started using our app (!). Another one, however, made some nice money on his.
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>>>Luckily, the doctors nowadays are just happy to be tinkering with existing apps, using tools already at hand.
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>>I think, also, nowadays the existing applications - web, mobile, etc. - are way to complex for a non-professional developer to tinker with.
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>You said it. I have always thought of myself as a reasonably competent developer. With this new mobile stuff, no matter how hard I study, I feel like a minnow at sea. I'll get there, I know I will. It's just really hard.

Very hard :)