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

https://rock-paper-scissors-l-q-k-b3-718.evergrovio.com/posts/10-things-you-learned-in-kindergarden-that-will-help-you-with-rock-paper-scissors

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