Why are your tax forms so complicated? Because life is complicated. But why are the rules to rock, paper, scissors so complicated? You could read the full set of rules in the link below, or you could read the following summary (keep it simple stupid):

Rock: make a fist
Paper: flatten out your palm
Scissors: point the peace sign at your opponent

• 6.0.1 Rock: wins against Scissors, loses to Paper and stalemates against itself
• 6.0.2 Paper wins against Rock, loses to Scissors and stalemates against itself
• 6.0.3 Scissors wins against Paper, loses to Rock and stalemates against itself

Read for the crazy rules: 2004 Rock Paper Scissors International World Championships