How much do you know?
A stranger was seated next to a little girl on an airplane when the
stranger turned to her and said, "Let's talk. I've heard that flights go
quicker if you strike up a conversation with your fellow passenger."
The little girl, who had just opened her book, closed it slowly and said to
the stranger, "What would you like to talk about?"
"Oh, I don't know", said the stranger. "How about nuclear power?"
"OK", she said. "That could be an interesting topic. But let me ask you a
question first. A horse, a cow, and a deer all eat grass, the same stuff.
Yet a deer excretes little pellets, while a cow turns out a flat patty,
and a horse produces clumps of dried grass. Why do you suppose that is?"
The stranger thinks about it and says, "Hmmm, I have no idea."
So, she said, "Do you feel qualified to discuss nuclear power
when you don't know shit?"