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

https://rock-paper-scissors-o-z-l-n7-565.urbanvellum.com/posts/ten-rock-paper-scissors-myths-that-aren-t-always-true

Some players use Rock Paper Scissors to test timing and psychology-- do you go initially, mirror moves, or suddenly switch techniques to puzzle them?