Invaluable. Before a meeting, when preparing presentations, producing papers, seconds before a briefing, summarising communication, developing new directives and all those instances you need a start in the right direction, a memory jogger or a tool that fits the moment! It's great, looks like you have done hours of work and have that magic ability to summarise and concisely present complex information and data in a format everyone can understand, relates to established models and ensures clear focus on achieving the objectives.
I am making light of a book bursting with knowledge which will suit the practicing professional looking for just the right technique or the new student wishing to understand the principles and direction for further research. There really is a tool, model or a technique that can provide guidance or be modified to fit any need. As well as my own well thumbed copy I have purchased this for junior colleagues studying at the moment.