Managing the Development of Large Software Systems A Research Paper by Winston W. Royce www-scf.usc.edu The ordering of steps
The element becomes a sign Each unit can be seen purely as form, as what it is. Or it can be viewed as having a function. Its function is only understandable within the next higher level of organization. And in every case, function must succumb to the constraints of form. Once this worldly function is assigned, the element becomes a ‘sign’. It falls into the realm of concept. There is a mapping from one thought system to another. Margaret Magnus, Gods of the Word Form follows function formfunction