Was looking at one of those scaling things (
http://htwins.net/scale2/), and what blew my mind a little was this:
Apparently Minecraft worlds are MASSIVE, as in larger than the surface area of the world...
May or may not be true, but if so, wow...
EDIT: According to Minecraft Wiki, this is roughly the right scale. Also, the
Far Lands are super surreal sounding. Just reading the page was weird and a little nightmare-fuely. I think in general computer breakdowns can produce some weird stuff...