to this:

A familiar, happy mother of six-year-olds told: "Miniature from the lives of twins: to decide who of them opens the oven (burning cookies), decided to play in the "Stone-blade-paper" - 12 times showed the same figures!!! It was a lot of fun."

Because you have to play in generations-tested gicks "stone-sweater-paper-worm-spock"! and ;)