A General Building Block for Direct Modeling.
A discussion of criteria for and applications of a proposed general-purpose logical building block useful in constructing models for a variety of problem areas. The logical properties of such a device (realized through computer hardware or software) should be sufficiently complex that relatively few would be needed in model construction and sufficiently basic to provide general-purpose capability. It should be concept-oriented rather than problem-oriented and therefore more representative of the organization of conceptions of information flow in observed processes than are assembly-language commands or finite automata based on physiological principles. The building-block approach to modeling yields a number of advantages derived from enhancement of intuitive interaction, bypassing of certain mathematical difficulties, and minimizing of interruption of an investigator's thought processes. 43 pp. Refs.