It is axiomatic that the whole is equal to the sum of its parts. But in dividing up any “whole” one must be certain every part, including unseen elements and relationship, is accounted for. The marble sand to which the Venus de Milo may be reduced by a vandal does not equal the statue, though every last grain be preserved; nor is a thrush just so much feathers, bones, flesh and blood; nor a typewriter merely so much steel, glass. Paint. And rubber. Similarly a piece of work to be done cannot be subdivided into the obvious component parts without great danger that the central design, the operating relationships, the imprisoned idea, will be lost