Earlier quoted context omitted.
Disproving flat Earth doesn't logically prove round Earth, sure. But that's not how empirical reasoning works. If one model explains a bunch of observations naturally while another needs increasingly elaborate patches, that's evidence in favor of the first model. There's a difference between "I haven't verified this myself" and "there is no good reason to believe this." You're conflating the two. But then I've given…
I'm not disagreeing with your conclusion. All I'm saying is that I'm just parroting these things without actually verifying them - and so are you. If flat Earth gets you all excited, I can also explain the concept with Pythagoras' theorem. I never did a formal proof of it, yet I just use it because it works and I'm pretty sure it's true. Someone else proved it and I'm just parroting that without ever even having both…
We have 2500 years of epistemology. Individual humans can reach knowledge to various degrees. It’s not a binary state of knowing or not knowing.