Reminded me of this entertaining clip:

http://vooza.com/videos/the-5-whys/

I doubt that most people who use the five whys really take it to be as simplistic as the author of this article suggested, but to those that do, it's a good wake up call.

In fact, life is even more complex than the article suggests, when you throw in effects of chaos, feedback loops, missing information, unknown influences - just to mention a few. Still, tracking down the order in processes has got humanity quite far (at least as far as being able to predict and engineer accordingly) so it's obviously effective.