The moment when you realize that you don't know what you never knew

The past 10 days have been filled with lots of things:  boxes, hay bales, water buckets among them.  But one of the most common phrases uttered has been dear Hubby, "How can you not know that?"

This is in response to me saying "I don't know." to questions like these:
Where does the water go to in the barn?
Where is the electric come from in the barns?
How are the barns wired?
When was _______ built?
When was the last time _____ was done?

And when I say those dreaded three words, a look of disbelief passes across his handsome face.  He is incredulous that I don't know the wiring harness of a Richie frost-free water fountain.  That would have been the first question HE asked when he worked at his father's knee as a small child.  It never occurred to me to ask such a question.  I held the flashlight and fetched the wrenches and jiggled the handle. 

That is how boys and girls can both grow up on farms and know completely different things.

In one bout of frustration, Hubby snapped at me, "How could you have lived and worked here for 18 years and not know how this works?"  To which I replied, "How could you have lived in your mother's house for 18 years and not know her recipe for pickles?"

See, that's the moment when you realize that you don't know what you never knew...