I'm going to tell you about a scorpion who wanted to cross a river. First, he asked a frog to carry him, but the frog said no.. " If I let you on my back you may sting me, and the sting of a scorpion is death." "Now where," asked the scorpion, "is the logic of that? If I sting you, you will die, and I will drown." So the frog became convinced and allowed the scorpion to climb onto his back. But, just as they reached the middle of the river, the frog felt a terrible pain rush through...