But could the Greeks sail? Did ancient (Eastern?) Jacob's Staff surveying and navigation methods account for the curvature of the earth? https://www.google.com

But could the Greeks sail? Did ancient (Eastern?) Jacob's Staff surveying and navigation methods account for the curvature of the earth? https://www.google.com/search?q=Did%20ancient%20(Eastern%3F)%20Jacob's%20Staff%20surveying%20and%20navigation%20methods%20account%20for%20the%20curvature%20of%20the%20earth%3F https://www.google.com/search?q=Did%20ancient%20(Eastern%3F)... : - History of geodesy: https://en.wikipedia.org/wiki/History_of_geodesy https://en.wikipedia.org/wiki/History_of_geodesy FWIU Egyptian sails are Phoenician in origin.