Well, it is a very small industry, so people tend to know each other. I suppose that makes up for the lack of diligent background investigations. Also, you do have to show your actual work samples. Although there's also the advertising version of falsifying logbooks, which would be trying to pass off another guy's work as your own. I caught someone doing that once. What he didn't know, was that the work he was presenting to me as his own, was actually my work from a few years back. I sort of enjoyed that interview...