Ross Ashby

A proposal: Never try to think about anything nor take any action without ensuring awareness (shared awareness) of three levels--the level of direct interest, the level that encompasses the level of focus, and thirdly the level that makes up the level of focus. ⇒ Shared Situation Awareness

With the increased interest in multi-user systems with distributed decision making tasks, such as network centric warfare and free-flight air traffic control, the concept of shared situation awareness (SSA) has become more important.