I don't quite agree on the first statement. I've known programmers who have been working with COBOL for the past 15-20 years. And they're good at it. Except tha

I don't quite agree on the first statement. I've known programmers who have been working with COBOL for the past 15-20 years. And they're good at it. Except that it seems that they've been living in a cave for the past 15-20 years and know nothing about current programming paradigms or technology and definitely not languages. So yeah, those people have pretty much placed coded themselves into a hole. Of course, they might be good COBOL programmers, but that doesn't mean that they're good programmers. In my opinion, a good programmer would always be trying to enrich his knowledge by working on different ideas, different technology no matter what his day job is.