That's a nice metaphor, but no, we aren't saying that you are doing a job, and actually you don't know how do to it and you have someone else doing that for you. The plumber metaphor is flawed.

I can tell you, because it happen every day. It happens to me every day. And if you don't believe me, just read around the comments from people, here and on the article page, that do exactly that.

By the way, there are also comments of people saying that designer must think a bit over what's technically possible, to innovate. Figures. ;)

The problem however isn't in agreeing or not, but in not being so sure that your point of view is the right one.

And I'm talking with a straight face, yes. :)