Guy emails with a job quite above my skill level, with a number of "must haves" that I don't have, and have never worked with. When I said that I don't know anything about what you've just said other than "I can spell these words," his reply was that the environment offers really great OJT and we can help you improve your skills, and this one guy used that to get some high-level certification! Yeah, I'm sure he just walked in and aced that test with no previous knowledge. It's really hard to create an analogy for someone that's supposed to be talking to you about technical matters, but the best thing I could come up with was "You can drive a car, with a little OJT you'll be a senior automotive repair tech!" I've always found that companies that want certain skills and are hiring for projects aren't going to wait around a year while you take classes and learn how to do something new so you can do the job they hired you for, and I'm not willing to pick up and move halfway across the country for a job I know I can't do.