From the title of this book I was expecting a book about slow-tech, the movement for low tech solutions, craftsmanship and old fashioned quality and durability. In fact, this is much more a book about the 'robustness of ecosystems'. It's still good, it's just not really about slow-tech.
Andrew Price's theory is that our current world prizes efficiency over robustness. Our tendency is to refine and streamline things to within an inch of their lives, and clear any unnecessary baggage. The trouble is, leaving no slack in the system can prove disastrous. One recurring example in the book is the mangrove swamps around New Orleans, which were cleared and drained in the course of planning and development, but could well have saved the city when the levees broke.
Price gives numerous examples of situations where development or industry has prioritised efficiency to the detriment of the environment. Most of the examples are more about land management, planning, and stewardship than they are about appropriate technology per se.
Speaking of which, there is almost nothing in the book about 'Appropriate Technology', E F Schumacher's drive for 'human-sized' solutions. Nor is there anything about Permaculture, or Transition Towns, both of which are answers to the resilience problem Price describes. Even the slow movement, of which slow-tech is a part, barely gets a mention.
In short, an interesting book about valuing and preserving the robustness of ecosystems, but not well named.