And so the Teacher took him to the cart and said, "Your first task is to untie this knot."
And the boy examined the knot for a while, and when he could see no way to undo it, he took out his sword and cut it in two.
The Teacher said, "For decades men have struggled with this knot, yet none have thought to do what you have just done."
The boy smiled.
"Now, for your second task", said the Teacher, "tie the knot back."