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

https://rock-paper-scissors-gambling-x-w-x-t9-992.yousher.com/why-rock-paper-scissors-is-more-tougher-than-you-think

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