Yeah. It would probably be like, think critically. Do you actually see the earths curvature? Does it make sense that humans decend from an ancient primate?? Just think for your self.

And then people "think" and forget to calculate in that they could just be ignorant on the subject matter.

As someone that makes things and stuff that needs to account for curvature. I would advise to educate your self on the topic. Grasp the basic consepts before thinking too much. That comes later.