Maybe the Earth isn't actually round, but the shape of the universe makes it look round. I mean, you never know. We haven't got a clue about the real nature of our universe - time, shape, distortion. Maybe the shape of the universe makes the Earth and other planets seem round, but they are actually really awkward shapes.
Just my very wierd philosophical "what if..."
The earth is in the shape of a potato, which is in fact the thing that holds the whole universe together.
only those living in the two dimensional world think its flat!i think its shaped like an ice cream cone.mmm....
*insert joke about the world not being round*