The Flat Earth Theory

Flat ear theory originally came from just direct observation. When people started to question this a little bit more, and travelling across the ocean and across the seas, the idea then started to switch to more of the earth being a sphere. So what we know is that we need more evidence than just observation to support a theory. We also have to give credit to those using this type of a cartisian doubt, a philosophical idea that the world outside theself is subject to uncertainty. And when we experience that, a thinking of uncertainty, it then drives us to want to learn more. Do we want to hold on to a belief due to distrust, distrust and authority? Do our current beliefs