Using the whole language

Begin at the unresolved contribution and keep already adequate work. A return to an earlier pattern follows a changed premise, not a compulsory cycle. The Preface explains the economic architecture, Method verticals, sources and limits; each pattern provides its own instructions and examples.

The Engineering DPF Suite contains the financial, operating, organizational, explanation and development methods used at these boundaries. The Foundational Thinking DPF Suite supplies mathematical, physical and computational methods where those contributions are missing.