LOST YOUR LEFT ARM?

"Good, Understand, Words
Success is achieved by developing our strengths, not by eliminating our weaknesses." - Marilyn vos Savant 

Left Arm

A ten year-old boy had lost his left arm in a car accident, but he began lessons with an old Judo master. So he couldn’t understand why, after three months of training he'd been taught only one move.
"Master," the boy said, "Shouldn’t I be learning more moves?"
"This is the only move you know, and will ever need to know." the master replied.
Months later, the boy. Went for his first tournament. Surprisingly, he easily won his first two matches, and even though the third was difficult - yet with his one move - he won, and was in the finals. His opponent this time was bigger, stronger, and more experienced: the boy appeared to be over matched. Concerned that the boy might get hurt, the referee called a time-out. He was about to stop the match when the master intervened. "No, let him continue." replied the master. Soon after the match resumed, his opponent made a critical mistake: he dropped his guard. And the boy used his one move to pin him. He'd won. He was the new champion. On the way home, the boy asked.
"How did I win with only one move?"
"You won for two reasons," replied his master.