I was reading the original article, and I have to post here, because comments there are closed. There was a post there about how a hiring manager wants people who can do modulo-16. I've been doing development (and not web development, nor scripting) for over a decade, and I don't even know what modulo-16 IS. I don't want someone who can do modulo-16 during an interview, I want someone who can recognize he needs modulo-16 and teach himself how to do it in a few hours.