You most likely will have to make a decision using Rock, Paper, Scissors at some point in your life so you may as well learn how to best win at it. wikiHow has a great article on how to outsmart rookie players and spot expert ones.
While you probably already know how to play “Rock, Paper, Scissors,” there can be more to this game than simple chance. This article details some of the strategies used in competitions such as the annual Rock, Paper, Scissors World Championship. By being both observant and unpredictable, you can play like an RPS pro.