> On average and to our senses the earth is pretty undisputable flat.
That's very easy to dispute
> have you never seen a hill or a hole?
Ok, fine, "other people ... maybe exposed with too much BS", but let's not pretend sticking to some patent nonsense can be traced to simple observations when those don't exist, that's not how you become a true believer
Ok yes, you can totally dispute that the earth we walk around is flat. It was mainly rhetorical reasons, why I used that wording. And I actually believe nothing is indisputable.
(But that does not mean I waste energy seriously trying to negate flat earth theory for good, I am more interested in the psychological reasons that makes people think like that)