You could measure 4 millimeters of curvature in a 4000-year-old stone edge 230 meters long in aerial photos taken in the 1940's?
O Rly?
Chuck, I've got a real nice lake out here in Gaines County that you might be interested in purchasing. Pretty inexpensively, too, and it comes with all its lakefront property......
[/OT BS]
"The Christian church, in its attitude toward science, shows the mind of a more or less enlightened man of the Thirteenth Century. It no longer believes that the earth is flat, but it is still convinced that prayer can cure after medicine fails." H L Mencken