Wilensky R. Planning and understanding. A computational approach to human reasoning

London: Addison Wesley, 1983. - 190 p.
This text brings together two areas of cognitive science: common sense problem-solving and natural language understanding. To do this, three theories are presented: a theory of plan generation, a theory of plan-based understanding, and a theory of the structure of plans that underlies both theories of processing. The theory stresses the complexity of the structure of plans rather than the problem of searching for the solution in a problem space. In addition, the theory examines commonplace situations rather than plan production, and simulation and goal detection in place of more conventional bug detection and plan modification techniques.