Total poster child for the DunningKruger effect.
http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effectThe man had absolutely know idea how little he knew. He was a "web developer". I used to carp about his lack of competence to a buddy and he quiped "What does he develop? Photos?" Years ago I showed him some jQuery/AJAX stuff and he glanced at it and said "That's nice." in a dismissive manner. He did the same with Firebug. And when Object Oriented Programming (OOP) became all the rage he dismissed it as "unnecessary" and never bothered to learn about it.
He ended up getting canned for not being able to figure out how to use, you guessed it, OOP and jQuery/AJAX. He could not, for the life of him, figure out how modern web apps worked. Once he was forced to stepped out of his comfort zone he was about as useful as a sack of wet leather.