You’d think that being a Time Lord now that I wouldn’t need to be scrambling around at 11.30pm trying to finish Monday’s comic, but apparently updates are pivotal events in the history of the universe that cannot be changed.

For more info on the Banach–Tarski paradox see trusty ol’ Wikipedia
For more info on the region of space in panel three see the Astronomy picture of the day for 2010 October 15