WHAT IF the Earth was Actually Flat?

[andial]

"While topography is certainly a factor, it's far from decisive on a ball Earth model. The distance from Portland to San Diego is 1083 miles. 1083*1083*8 = 9383112(inches) / 12 = 781,926 feet of expected curvature. The shape of Earth, were it a spheroid 7917 miles in diameter at the equator, would overwhelm topographical features during such a trip...resulting in an uphill trip South and a downhill trip North."

Excellent work sir.