Double teaming is the process of putting a less experienced person to work with an experienced one, particularly in operations, installations, and technical work. This enables the lesser experienced (or new person) to show their stuff under fire, be evaluated under pressure, and sometimes step up into the role of a more responsible position.
Actually, the process of one-on-one teaching --by showing, leading, invoking interest in and ability to expand and grow in usefulness, actions and abilities -- is a time honored process that has been proven in many ways. In one sense its rather like a modern day equivalent of the master/apprentice process, but molded to fit a different time and situation. Stated in another way, its friend helping friend.
True, you can function without double teaming but you aren't doing your "second string" any favors. Don't you want them all to become first string personnel? What better way to help them along the way?
Signed Stan Harter, Auxiliary Communications Service program coordinator, State of California.