“If it looks like a duck, sounds like a duck, and walks like a duck, then it most probably is a duck, don’t you agree?”
The boy considered this idea for a moment. What had ducks got to do with anything? Grown-ups could be very tiresome sometimes, he thought. He raised his eyes to the Master.
“But what about if it’s a robot duck?” he said without any apparent guile.
“Go back to your place,” sighed the Master.