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

https://rock-paper-scissors-gambling-p-s-x-u3-164.northvaledigest.com/posts/13-things-you-should-know-about-rock-paper-scissors-that-you-might-never-have-known

Some players utilize Rock Paper Scissors to check timing and psychology-- do you go first, mirror moves, or suddenly switch techniques to confuse them?