HaHa, it's always good to have a wife around who asks questions. I appreciate them from my man, as well. Of course, this can be somewhat a nuisance when it doesn't click right away but after giving it a little time to settle, I find it every time helpful.
How about getting closer to your work? But I assume that thought already was thought by you, right?

"What if?" questions shall be answered without having them lingering around like a thorn in the flesh. While one can be certain they will appear in all kinds of shades ever so often.