And when it's done by children, it's cute in its naivete, based as it is on the assumption that Dad has the answers to everything. When it's done by adults, "root-cause analysis" is mostly just an excuse for a little Monday-morning quarterbacking, especially in the wake of 9/11. The smacking part still works, though ;)
"Why do they all hate us so much?"
SMACK! "I don't care, but I can tell you why they won't be breathing much longer..."