[3] The Scientific Geography Series editor defined the term as involving: "the precise definition of variables and theoretical relationships that can be shown to be logically consistent.
The theories are judged on the clarity of specification of their hypotheses and on their ability to be verified through statistical empirical analysis.
"[7] Multiple reviews noted that the Scientific Geography Series was clearly aimed at American Undergraduate students.
[2] As they were small, one reviewer noted that the project was flawed due to the texts being neither cutting-edge research nor full textbooks.
[7] The implication was that a large-scale American publishing company was taking the British CATMOG idea, and profiting from it.