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

https://rock-paper-scissors-e-l-e-v5-715.urbanvellum.com/posts/20-things-you-must-know-about-rock-paper-scissors

Some gamers use Rock Paper Scissors to check timing and psychology-- do you go first, mirror moves, or unexpectedly switch techniques to puzzle them?