It's not hard, with some modest experience (say 1-2 years of professional work or serious amateur interest), to extrapolate from his deliberately high-level discussion (it was written for a blog/newsletter, not for a book) to something more interesting and "real world". What's hard is coming up with an example that's nearly complete and fits into something the size of a newsletter or comment. He did an alright job of it, just left the readers with the need to exercise their gray matter a bit.