Some players utilize Rock Paper Scissors to test timing and psychology-- do you go first, mirror relocations

https://rock-paper-scissors-gambling-game-h-m-u-v1-392.summitviewdaily.com/posts/14-cartoons-about-rock-paper-scissors-casino-to-brighten-your-day

Some players utilize Rock Paper Scissors to test timing and psychology-- do you go first, mirror moves, or all of a sudden switch methods to confuse them?