As long as we're on this subject, I'd like to strongly encourage programmers to adopt a "pen-and-paper" approach to problem solving. Just like mentionned in the article, there are great benefits coming from actually writing down the problem.

Agreed. Also relevant to this topic is Rich Hickey's talk on "Hammock Driven Development": http://blip.tv/clojure/hammock-driven-development-4475586