"This book examines the issue of rational cooperation, especially cooperation between people with conflicting moral commitments. The first part considers how the two main aspects of cooperation - the choice by a group of a particular cooperative scheme and the decision by each member to contribute to that scheme - can be understood as guided by reason. The second part explores how the activity of reasoning itself can take a cooperative form. The book is distinctive in offering an account of what people can accomplish by reasoning together, of the role of deliberation in democratic decision making, and of the negotiation of the proper use of concepts. Presenting for the first time a detailed analysis of the general problem of cooperation and collective reasoning between people with different moral commitments, this book will be of particular interest to philosophers of the social sciences and to students in political science, sociology and economics." --Cambridge Press.

The economic crisis is also a crisis for economic theory. Most analyses of the evolution of the crisis invoke three themes, contagion, networks and trust, yet none of these play a major role in standard macroeconomic models. What is needed is a theory in which these aspects are central. The direct interaction between individuals, firms and banks does not simply produce imperfections in the functioning of the economy but is the very basis of the functioning of a modern economy. This book suggests a way of analysing the economy which takes this point of view. The economy should be considered as a complex adaptive system in which the agents constantly react to, influence and are influenced by, the other individuals in the economy. In such systems which are familiar from statistical physics and biology for example, the behaviour of the aggregate cannot be deduced from the behaviour of the average, or "representative" individual. Just as the organised activity of an ants’ nest cannot be understood from the behaviour of a "representative ant" so macroeconomic phenomena should not be assimilated to those associated with the "representative agent". This book provides examples where this can clearly be seen. The examples range from Schelling’s model of segregation, to contributions to public goods, the evolution of buyer seller relations in fish markets, to financial models based on the foraging behaviour of ants. The message of the book is that coordination rather than efficiency is the central problem in economics. How do the myriads of individual choices and decisions come to be coordinated? How does the economy or a market, "self organise" and how does this sometimes result in major upheavals, or to use the phrase from physics, "phase transitions"? The sort of system described in this book is not in equilibrium in the standard sense, it is constantly changing and moving from state to state and its very structure is always being modified. The economy is not a ship sailing on a well-defined trajectory which occasionally gets knocked off course. It is more like the slime described in the book "emergence", constantly reorganising itself so as to slide collectively in directions which are neither understood nor necessarily desired by its components.

Rationality and Decision Making: From Normative Rules to Heuristics' offers a broad overview of both classic and very recent discussions concerning rationality and strategies of individual and group decision making. They are considered from a methodological, ethical, sociological, historical, cultural as well as an evolutionary perspective. Decision making, both rational and irrational, is treated in its complexity as an algorithmic, heuristic and intuitive process. The volume analyzes the theoretical and practical aspects of decision making in individual intentional endeavors and group or institutionalized undertakings. The analyses are mostly theoretical but they also appeal to empirical studies, proposed by philosophers and cognitive scientists who have studied logical, cognitive, biological, social and evolutionary aspects of human rationality.

This volume features a critical evaluation of the recent work of the philosopher, Prof. Raimo Tuomela and it also offers it offers new approaches to the collectivism-versus-individualism debate. It specifically looks at Tuomela's book Social Ontology and its accounts of collective intentionality and related topics. The book contains eight essays written by expert contributors that present different perspectives on Tuomela’s investigation into the philosophy of sociality, social ontology, theory of action, and (philosophical) decision and game theory. In addition, Tuomela himself gives a comprehensive response to each essay and defends his theory in terms of the new arguments presented here. Overall, readers will gain a deeper insight into group reasoning and the "we-mode" approach, which is used to account for collective intention and action, cooperation, group attitudes, social practices, and institutions as well as group solidarity. This book will be of interest to a wide range of readers and graduate students and researchers interested in contemporary philosophy of sociality, sociological theory, social ontology as well as the philosophy of mind, decision and game theory, and cognitive science. Tuomela’s book stands as a model of excellence in social ontology, an especially intractable field of philosophical inquiry that benefits conspicuously from the devotion of Tuomela’s keen philosophical mind. His book is must reading in social ontology. J. Angelo Corlett, Julia Lyons Strobel

A TIMES BOOK OF THE YEAR 2021 'Punchy, funny and invigorating ... Pinker is the high priest of rationalism' Sunday Times 'If you've ever considered taking drugs to make yourself smarter, read Rationality instead. It's cheaper, more entertaining, and more effective' Jonathan Haidt, author of The Righteous Mind In the twenty-first century, humanity is reaching new heights of scientific understanding - and at the same time appears to be losing its mind. How can a species that discovered vaccines for Covid-19 in less than a year produce so much fake news, quack cures and conspiracy theorizing? In Rationality, Pinker rejects the cynical cliché that humans are simply an irrational species - cavemen out of time fatally cursed with biases, fallacies and illusions. After all, we discovered the laws of nature, lengthened and enriched our lives and set the benchmarks for rationality itself. Instead, he explains, we think in ways that suit the low-tech contexts in which we spend most of our lives, but fail to take advantage of the powerful tools of reasoning we have built up over millennia: logic, critical thinking, probability, causal inference, and decision-making under uncertainty. These tools are not a standard part of our educational curricula, and have never been presented clearly and entertainingly in a single book - until now. Rationality matters. It leads to better choices in our lives and in the public sphere, and is the ultimate driver of social justice and moral progress. Brimming with insight and humour, Rationality will enlighten, inspire and empower. 'A terrific book, much-needed for our time' Peter Singer

This volume presents a systematic philosophical theory related to the collectivism-versus-individualism debate in the social sciences. A weak version of collectivism (the "we-mode" approach) that depends on group-based collective intentionality is developed in the book. We-mode collective intentionality is not individualistically reducible and is needed to complement individualistic accounts in social scientific theorizing. The we-mode approach is used in the book to account for collective intention and action, cooperation, group attitudes, social practices and institutions as well as group solidarity.

. This major new book will be of particular interest not only to philosophers but to decision theorists, political scientists, economists, and researchers in artificial intelligence.