The world is round, like an orange.
And then there is this, which is relevant somehow ? http://www.yudkowsky.net/rational/the-simple-truth/ Maybe it's a counterargument but I don't know for sure
Clearly relevant, there's another character with bowls bumping his butt: "I can see you’ve got five more buckets in your back pocket."Oh, sure, everyone thinks two plus two is four, everyone says two plus two is four, and in the mere mundane drudgery of everyday life everyone behaves as if two plus two is four, but what does two plus two really, ultimately equal? As near as I can figure, four. It’s still four even if I intone the question in a solemn, portentous tone of voice. Too simple, you say? Maybe, on this occasion, life doesn’t need to be complicated. Wouldn’t that be refreshing?