This is an easy one for me. If it wasn't for the video of the birth and the fact that they look like me and DH I would wonder "did this child really come out of my body?" Where did this child with all these brains come from?
LOL!
We had a couple visit us last week and, after meeting our 24 m.o. DD, the wife turned to me and said, "She is so smart - REALLY smart - where did that come from?" and she searched my face like it was a complete mystery. I'm glad I wasn't offended LOL!
Grinity, can't you just tell your DS "the apple doesn't fall far from the tree" and let him do research on intelligence to his heart's content? He could explore the nature v. nurture argument and, either way, conclude you are his competitive advantage.
