[Another good one](http://xkcd.com/552/) from [xkcd](http://xkcd.com/) (well, they are all pretty good, but this one just hits close to home).

Here are [some](http://xkcd.com/55/) [other](http://xkcd.com/287/) [math](http://xkcd.com/435/)/[stats](http://xkcd.com/539/) [related](http://xkcd.com/410/) xkcd comics.