Nah, there are many tests the poorest of homeless could do in modern times that prove the Earth is a sphere. The people that honestly believe it are either stupid to the point of being a detriment to society, or dishonest contrarians that are so shit that they’re … a detriment to society.

Humanity hasn’t been subject to natural selection for so long that completely brainless morons do exist in droves, and it’s frankly terrifying. Humanity is doomed, and it’s because far too many “good” people do not understand the natural forces that drove us to try and control our environment.