I voted 'other' not for a lack of evidence, of which there is no shortage, but simply for the fact that I'm not quite ready to take the plunge unequivocally. I'm definitely a geocentrist and I'm leaning toward flatness.
Talk me off the ledge and show me a Curvature Calculator that works. I don't want NASA composites and Idiot Dave windbaggery. If the size of the round earth is an established fact, why do the Earth Curve Calculators always fail? Seems 1) we either don't know the actual size or curvature, 2) someone continually inputs erroneous data and no one has noticed, or 3) maybe 'that stuff is flat'.
https://en.wikipedia.org/wiki/History_of_geodesy National Geodetic Survey, Charting and Geodetic Services, USA
Astronomy and Space Geodesy Section, National Geodetic Survey, USA.
Giovanni Domenico Cassini was one of the most skilled surveyors of his era, a man the popes in Rome had surveying rivers and lands to prevent flooding. So, as a true empiricist, he decided to measure the curve of the Earth as well as he could for himself in order to determine the true shape of the Earth.
King Louis XIV of France approved Cassini’s last great expedition. With the aid of his son Jacques Cassini (Cassini II) and others, he measured the arc of meridian (see above) from Paris north to Dunkirk and south to the boundary of Spain, and, in addition, he conducted various associated geodesic and further south astronomical operations that were reported to the French Academy. Cassini knew that it would be virtually impossible to measure every kilometer of meridian from Pole to Pole at the time. At best, a northern measurement would confirm a probable shape of the Earth. Consequently, they decided to measure where it was most convenient, in Europe in the northern hemisphere.
The Cassinis found the Earth (the northern hemisphere)
to be narrower at the sides and more pointed at the Pole.
The results, published by Cassini II in 1720, showed the length of a meridian degree north of Paris was 111,017 meters or 265 meters shorter than one south of Paris (111,282 meters). This suggested that if this trend occurred in the southern hemisphere, the Earth has to be a prolate spheroid, not flattened at the poles as Newton proposed, but slightly pointed, with the equatorial axis shorter than the polar axis, that is, kind of egg-shaped rather than orange shaped.