This could be the best on the subject I've read. But I wish he spent a sentence fragment mentioning sources (like Papert's Mindstorms) which expand on how important an activity debugging is. Some people think that a real innovation of computing is that there's now a word for "debugging".

> "Surely 'debugging strategies' were developed by successful learners long before computers existed. But thinking about learning by analogy with developing a program is a powerful and accessible way to get started on becoming more articulate about one's debugging strategies and more deliberate about improving them."