Explain xkcd: It's 'cause you're dumb.
- What can we learn from this? - I've learned that even when we are bored, we can still find lessons all around us. Such as a lesson in variable density of any surface (in this case, wood) and a new method of entertainment (thank you Mr. XKCD). - E-inspired (talk) 16:40, 28 February 2013 (UTC)