"You only need to see a curved horizon and sail towards it for long enough for it to be obvious that the earth isn't flat"

There goes the flatware that I left in my flat, with my flat-chested friend.

Considering the world is round, versus flat, (in the future) if you have really good eyesight and strategically placed mirrors, it may be possible to look far back, and unaided by telescopes, see your own bunghole. Note that I am just say'in may be...so don't create a thread condemning my "flirtations" with the future.