Eratosthenes calculated the earth's circumference 2300 years ago and we are still discussing this while we are building decentralized currencies, something is wrong here.
Eratosthenes assumed Earth was a globe and based his calculation on that assumption, this is called "begging the question". A small close Sun above a flat earth produces the same results.
You should research you facts before proving that you're a fool.
@BADecker, the Copernican model is done, you're done.
He assumed the sun was far away, thats why he used only 2 holes, however as shown many times, you can do it with 3 distant holes, measure the angles of the shadows and no FE model can account for the angles, even with a close sun.