bumbledraven

The Goal, by Eliyahu Goldratt (http://www.amazon.com/exec/obidos/ASIN/0884270610). Most real-world systems have a single constraint that limit the system's ability to achieve goal units.

The Beginning of Infinity by David Deutsch. A wide-ranging inquiry into the kinds of ideas that lead to human progress and those that don't. In the top five on the list of "best books I've ever read".

A Positive Revolution in Change: Appreciative Inquiry