id: 06002962 dt: b an: 06002962 au: van Benthem, Johan ti: Logical dynamics of information and interaction. so: Cambridge: Cambridge University Press (ISBN 978-0-521-76579-4/hbk). xi, 373~p. \sterling~55.00; \$~90.00 (2011). py: 2011 pu: Cambridge: Cambridge University Press la: EN cc: ut: epistemic logic; doxastic logic; knowledge update; belief revision; logic and games; interfacing between logic and other sciences; logical treatment of agency; attitudes; strategic action; cognitive science; philosophy; rationality of agents; questions; awareness; socio-logical dynamics ci: li: ab: This book provides a perfectly guided tour into the logical treatment of agency. The attribute ‘logical’ means here: based on modal logic and all those of its modern extensions that can, among other things, deal with epistemic or doxastic notions like knowledge and belief, attitudes (finding expression in preferences), and strategic action. Being an intrinsically dynamic entity, the latter touches upon two of the main concerns of the author: dynamifying logic and joining it with game theory. To understand and adequately model the nature and effect of information flow in complex multi-agent scenarios, for the purpose of {\it reasoning\/} about these, seems to be the driving force behind this. But with reasoning, interdisciplinary cross-connections to computer as well as cognitive science, and philosophy, enter the field, which is discussed by the author in due form. On the other hand, the program pursued in the book, including an analysis of the idea of agency respectively rationality of agents, leads to such an extended way of seeing by itself. And even more disciplines come into play on the technical side, e.g., probability theory. The material is divided into sixteen sections, followed by a conclusion. Starting from basic epistemic logic, increasingly complex systems are presented, involving more and more concepts like those mentioned above or related ones like questions and awareness. The proceeding is similar in every section of this part of the book: motivating by an engaging introduction with instructive but simple examples first, outlining the technical essence without formal overloading afterwards, summing up then, and giving more details and pointing up the respective state of the art in the end. But, it must not be thought that matters become trivial in this way! For instance, a certain degree of experience (or doing a number of exercises) is required for a proper handling of the higher (PAL-like) recursion axioms. After reaching a sufficient degree of comprehensiveness, the representational style changes slightly. For, the author looks beyond particular systems from now on, thereby tracing cross and transverse relations to other sciences (with a focus on philosophy). ‒ In parts, the book lives on the tension of opposite conceptual pairs like observation vs. inference, single vs. group agency, and, mainly, static vs. dynamic stance. I found the presentation of the subject very appealing. Reading the book shows that a knowledgeable and eloquent master has been at work. An important step towards a profound theory of socio-logical dynamics! rv: Bernhard Heinemann (Hagen)