Honestly, anyone whose precision of knowledge is limited only by Godel's incompleteness theorem deserves to be a little bit arrogant. But no such person exists. Looking back on one's life tends to reveal many errors, blunders, and utterly moronic misconceptions. Plenty of material to provoke humility there.

I should say that none of this means there's no such thing as objective reality. There (probably) is some kind of objective reality underlying all of this. But we don't have access to that. All we have access to are the incomplete, quirky, partially-wrong realities that live in each of our heads.