I agree, I hesitated about Theologians but it was the best counter-example I could find. I would probably believe Theologians rather than Internet Atheists about what a Holy Book claims, what positions a religion holds, how a book should be interpreted, etc. I'll believe a biblical scholar or an ancient historian above both though.
I was just wondering. Human minds are messed up in 1001 ways, but are there a few rational principles that most people already have down? Of course, the answers to this question are probably so extremely obvious that I haven't even considered them. But I ask all the same.