Rock, Paper, Scissors

Have you ever played the game "Rock Paper Scissors"? Paper beats Rock. Scissors beat Paper. and Rock beats Scissors. Do you ever wonder why it is this way? How does Paper win against Rock? Scissors and Paper make sense, right? But smashing Scissors with a Rock must take a lot of motivation and effort.
Why?

Here's their story.
(you'll never see this game the same again)