Meta-fiction for babies.

Or is it meta-non-fiction? Is all non-fiction meta? Are there any examples of non-meta-non-fiction? If we were introduced to an author who wrote a historical account of Indian bread and Greek cheese that constantly pulled from the text to state bluntly, “I am no expert. This history is just my opinion,” would we have met a non-meta-feta-naan-non-fiction author? Okay, that last one was dumb.