A stranger was seated next to a little girl on the airplane when the

stranger turned to her and said, 'Let's talk. I've heard that flight's

go quicker if you strike up a conversation with your fellow passengers.

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?' and

he smiles.

'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 the same stuff -
grass - . 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, visibly surprised by the little girl's intelligence,
thinks about it and says,
'Hmmm, I have no idea.'

To which the little girl replies,
'Do you really feel qualified to
discuss nuclear power when you don't know shit?