Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is an intellectually stimulating discussion of the nature of knowledge.

This is an intellectually stimulating discussion of the nature of knowledge.As mentioned in other reviews the labels of knowledge can be confusing if the reader does not systematically take note of the progression of Mokyr's explanation. The reader, after assimilating the understanding Mokyr's model of knowledge, will reap huge rewards in their perspective of historical events and begin to look at current trends differently.This book is not intended to be light reading. The concepts require engagement; the readers engagement yields great rewards in understanding.Mokyr's "The Lever of Riches" is an excellent complement to this book. The two books can be read simultaneously or in order as written. Together they reveal the powerful forces that seem to be continually at work throughout human history that create environments of innovation.