Number 817
Date Nov. 10th 2010
Previous Applied Math
Next Illness

Mutual is the 817th xkcd comic.


Mouseover textEdit

"A universe that needed someone to observe it in order to collapse it into existence would be a pretty sorry universe indeed."

See alsoEdit

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.