A stranger has to pull his car aside the road because there are sheep
crossing the road. He gets out of his car bored and asks the sheppard: "If
I can guess exactly how many sheep you have, can I have one of them?". The
Sheppard says yes because he thinks the stranger will never guess exactly
the right number. After a while the stranger says: "165 sheep". Surprised
the sheppard says: "Ok, pick one". The stranger chooses one of the animals
and when he gets into his car again, the sheppard says: "If I can guess
your profession, can I get my animal back then?". "OK," says the
stranger. "You're a theoretical biologist, and now give me my llama back..."
