Issac Asimov delt with this ...
In the relativity of wrong.
[
The curvature of such a sphere is about 0.000126 per mile, a quantity very close to 0 per mile, as you can see, and one not easily measured by the techniques at the disposal of the ancients. The tiny difference between 0 and 0.000126 accounts for the fact that it took so long to pass from the flat earth to the spherical earth.
http://chem.tufts.edu/answersinscience/relativityofwrong.htm
]
Biting the hand that feeds IT
