He confronts a basic tool of the measurers the statistical technique called factor analysis, developed by the influential English psychologist Charles Spearman and demonstrates persuasively how factor analysis led to the cardinal error in reasoning of confusing correlation with cause, or, to put it another way, of attributing false concreteness to the abstract. It is this sort of performance that makes the book's eventual refutation of Arthur Jensen seem incidental, for it is far more absorbing to have our powers of reason challenged than it is to have our social consciences shaken.
Photography is a strong tool, a propaganda device, and a weapon for the defense of the environment... Photographs are believed more than words; thus they can be used persuasively to show people who have never taken the trouble to look what is there. They can point out beauties and relationships not previously believed or suspect to exist.
It is easy to argue persuasively the truism that the lessons of history are best derived from what actually happened, rather than from what nearly happened. It should be added, however, that what happened becomes more fully comprehensible in the light of the contending forces that existed at moments of decision. Understanding of the total historical setting is bound to contribute to a clearer view of the actual course of affairs.Harold C. Deutsch