Have you ever watched a “tag team” event, like a relay race, where teammates take turns engaging in whatever activity is required? Here is another example. As a kid, I remember watching wrestling matches on TV, where two wrestlers would compete against two others. When one member of the “tag team” needed a break, or another “tactic” (or wrestling move) needed to be applied, wrestler 1 would run to the corner of the ring, slap hands with wrestler 2 (his teammate) and the match would continue. Don’t ask me what determined the winner in these tag matches – I am too old to recall that - but it was fun to watch teamwork in action.