You have to start somewhere, don't you think? He can't just start at the top and assume he knows how to build something. And there are certainly many lessons to

You have to start somewhere, don't you think? He can't just start at the top and assume he knows how to build something. And there are certainly many lessons to be learned by building something that is already well understood (as many people seem to be attesting to in these comments). Consider it "practice before the big game," where "the big game" is hopefully something he does in ten years that makes people's lives a little better.