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

https://rock-paper-scissors-v-f-m-o1-657.summitquill.com/posts/it-s-enough-15-things-about-rock-paper-scissors-gambling-we-re-overheard

Some players use Rock Paper Scissors to evaluate timing and psychology-- do you go first, mirror moves, or suddenly switch methods to confuse them?