I think most developers I know (and I know quite a few) will identify with this blog post.
Have you ever wondered why something on your computer will work fine while you’re working on it (or developing it) but, suddenly and without warning, fail to work properly when you’re showing someone what you are working on?
This often happens when someone asks you if there’s a way to accomplish something … and you say: “Sure, that’s easy”, and try to show them … failing miserably.