I enjoyed the walk through the latter 2/3 of the 20th century with a guy that is clearly of genius level and very engaged in the real world. I think this book gives a feel for the global economy in a way that few others can. My major sense (although he never completely directly puts it this way) is that "global free markets and rule of law" are a bit like a giant and powerful genie that is released from the bottle by freedom and the sense that individuals can create value and improve their lives by keeping a significant percentage of that created value to make their own lives, and the lives of their children better (that is a restatement of "rule of law").
The "genie" ONLY produces wealth when it is "uncorked". Attempt to control it via too much in the way of regulation and taxation, and the genie is gone like it never existed. More than anything else, the "genie" arrives ONLY when the vast majority of people see market freedom and rule of law as a reality and believe that they can invest their money, time, energy in "risky" ventures and have a reasonable chance to better their lives. If that "belief and confidence" is removed, you see what has happened in the last quarter of '08 come to pass.
The other sense that I got from the book was that Alan understood that the actions taken after the '87 crash, bailing out Chrysler, bailing out the S&Ls, bailing out the hedge funds, fixing the "Asian Contagion", the Russian meltdown, the crash of 2000, 9-11, Enron, etc were a "danger to the moral hazard", but he didn't want it all to end on "his watch", so he rationalized each risky action. The "moral hazard" is the idea that if folks feel that they are "insured", they will go do stupid things (like sub-prime lending).
My sense is that each action taken to stave off or reduce the impact of the "crisis / recession of the day" during the Greenspan years increased the risk for the future -- and that the future happens to be now. The "moral hazard" was worn down enough, so that coupled with the Democrats taking over in '06 and Bush being left in the weakest state of any US president in memory, the sub-prime crisis collided with what was fanned into a "leadership crisis" and confidence evaporated world wide.
Confidence is WAY harder to create than it is to lose, and somehow I suspect that BO in action is going to be way less impressive than BO giving a speech. Boy, do I hope I'm wrong, because if I'm right, we are likely due for a finger pointing descent into a very long financial abyss.
The book is a very worthy read, I highly recommend it.