The author presents a solid synopsis and analysis of economic data that span most of Humanity's history. He uses these data to clearly explain complex economic phenomena as an application of simple, seemingly immutable, economic rules. The consequences of failure to account for these rules by policy makers over both time and distance are well described.
The primary review of this book is objectionable. The reviewer erroneously applies the label "conservative" to Dr. Sowell, lamenting the author's expressed point of view. Dr. Sowell writes the book as an economist, not an ideologue, and the book is simply an economic treatment of evidence, devoid of any political bend. What should be clear to the reviewer is that economics is not a belief system, but rather the study of the allocation of scare resources. A study-of employs scientific method and standard statistical techniques to test hypotheses and to draw inferences. This process, done correctly, must be free from ideology. Therefore, while a liberal might very well continue to support rent control as a policy, he does so in lieu of the demonstrated consequences of such policy. One can disagree with a political or philosophical stance; one cannot "disagree" with accumulated evidence.
There are some annoying typographical errors that should have been culled during editing. However, it is a great work overall. I endorse the sentiment that this book should be required reading for anybody that votes, anybody that holds office, and for anybody that has not given substantial thought or study to the subject of economics, yet considers himself educated.