First Edition Nov 2013

Second Edition May 2014

Cover changed. In terms of content the major change is the development of a new, synthesised matrix model. Chapter 7 has therefore been heavily revised, with the inclusion of a lengthy section on the matrix model’s implications, and a new ‘set of principles’ that arise therefrom. A new Appendix has also been added, but changes to other chapters are minor only.

Third Edition Jan 2016

Cover changed. Very minor alterations to text.