Experiments in software modeling

The objectives of a software support package for any computer system can quite readily be defined by the potential user of such a system. He will quickly point out that he wants the system to provide all the features and functions that he requires and that it should occupy minimal storage space and consume minimal time. Obviously, the designer of a software support system faced with these impossible objectives finds his life to be one of constant decision making as he comes up with the compromises that give the best possible approach to this solution.