Flat Earthers

[Fragony]

Yin and Yang?
Are you a wizard or a lizard?

Where is your playfullness and sense of humour, how hilarious would it be if someone can mathematically prove that the earth isn't round even when we all know it is. My brother 'proved' to me that 1+1 is in fact not 2, I caught him at a certain point but it took me a while but he almost had me.

I should have looked at the internet, believe me or not I cracked this one myself http://mathforum.org/library/drmath/view/57131.html