What indoctrination are you talking about? I'm talking about simple and elementary concrete things that any man with basic mathematics and a stick stuck in the ground can calculate its circumference, and with a telescope worth a few tens, hundreds of dollars you can see a lot of constellations, planets in our solar system where you can see their spherical shape; what you see through the telescope has nothing to do with indoctrination, what you can calculate has nothing to do with indoctrination.