I would like to thank you the author for: 1. For his technique of PROBLEM FRAMES, a sound method for a run-of-the-mill practitioner to deal with comlexity and chaos while defining a future system. Like any truely great ideas, Problem Frames is a very simple and elegant tool. 2. Crisp and engaging style of writing 3. Intellectual breadth You can start this book from any essay - the most of them are no more than 3 pages long - and you will enjoy everything you learn.