I will only say, and this is nothing new, that the book makes one ponder the comparative virtues of an approach of this kind compared with the one that is not only dominant by far today, but is also considered indispensable to reach conclusions – be they positive or normative – that may be called scientific.
Formalised theory and rigorous econometric methods force us to formulate hypotheses in a precise and coherent way and make it possible to test them against Popper’s falsification principle.