I am glad to see that others have found this to be an unsatisfying book. It lacks substance. Here's a random quote: "Earth is the element of simplicity that forms the core of all our structures. It is the glue that holds it all together when the pieces don't seem quite to fit. Earth makes the ends meet." Wolfe does not elucidate these comments. They are typical of the whole book: vague statements with little substance behind them. This book is mostly waffle. It lacks intelligent and practical advice on the topics it claims to consider.