Abstract
Properties characterizing complexity are woven together with research on human information processing and behavioristic psychology to produce a theory of human limits. It is suggested I hat coupling the human and complexity, in problem solving situations, can be viewed at a design problem where an interface device is needed to link the human lo complexity, Interpretive Structural Modeling is discussed as an example of such an in I efface device. In addition, it is proposed that a language specifically designed to help humans deal with complexity be developed. The necessary properties of such 3 language arc presented, and it is argued that Interpretive Structural Modeling already possesses some of these properties.