Rational Requirements and Reasoning. Critical Note on Rationality through Reasoning by John Broome

In his new book Rationality through Reasoning Broome aims to show in detail how
rationality works through reasoning. The book offers much more than a concise presentation
of his main arguments over the years. Broome has pushed his analysis of rationality much
further, and in several parts of the book he presents revised versions of his earlier positions.
The main focus of the book is on answering what Broome calls the motivation question,
namely: how can we explain that our beliefs about what we ought to do often cause a
corresponding intention? Broome raises this question in chapter 1 and provides his answer,
which rests on a defense of the encratic principle, in the final chapter of the book. The
intermediate chapters develop the tools he needs for his answer to the motivation question. In
addition, the book also discusses and analyzes several issues relevant to our understanding of
rationality in an admirably thorough way.