A Child's Intelligence

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 flights go quicker if you strike up a conversation with a fellow passenger.'

The little girl, who had just opened her book, closed it slowly
and asked the stranger, 'What would you like to talk about?'

'Oh, I don't know,' said the stranger. 'How about nuclear power?'
and he smiled.

'Okay,' 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, thought about it and answered, 'Hmmm... I
have no idea.'

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