The problem with "what do you know" questions is not (or so much) that they may reject people who know stuff but recall it differently, but that they aren't selective for having the ability to stick with something for an extended time. Avoiding distraction with the internet, or the more subtle types of distraction into futzing with things rather than doing the most important but more discouraging tasks.

http://news.ycombinator.com/item?id=1690578