ABSTRACT
The ultimate goal for any product or system is that it perform some intended function as affordably and as well as possible. The function may be described as some output characteristic, such as satisfactory message transmission in a communication system, cargo tonnage for a transportation system, or the accuracy of weather identification for airborne weather radar. The term for the overall capability of a product to meet customer objectives is product effectiveness. If the product is effective, it carries out the intended function well; if it is not effective, deficient attributes must be improved. The term for the overall cost, including purchase price, costs associated with operation maintenance, and repair and disposal costs, is product worth.
