Nathan Ballantyne

In this brief commentary, we offer thoughts on Thomas Kelly’s Bias: A Philosophical Study. We focus on the book’s relevance to the study of cognitive biases, including Kelly’s discussion of naïve realism (in the psychologists’ sense). While we are largely enthusiastic about Kelly’s theorizing, we also provide some pushback against his notion of emergent biases. We hope that psychologists will engage with Kelly’s work and might consider how some philosophical refinements could improve the empirical study of biases.

The fog of war—poor intelligence about the enemy—can frustrate even a well-prepared military force. Something similar can happen in intellectual debate. What I call the *fog of debate* is a useful metaphor for grappling with failures and dysfunctions of argumentative persuasion that stem from poor information about our opponents. It is distressingly easy to make mistakes about our opponents’ thinking, as well as to fail to comprehend their understanding of and reactions to our arguments. After describing the fog of debate and outlining its sources in cognition and communication, I consider a few policies we might adopt upon learning we are in this fog.

Philosophers and psychologists routinely explore questions surrounding reasoning, inquiry, and bias, though typically in disciplinary isolation. What is the source of our intellectual errors? When can we trust information others tell us? This volume brings together researchers from across the two disciplines to present ideas and insights for addressing the challenges of knowing well in a complicated world in four parts: how to best describe the conceptual and empirical terrain of reason and bias; how reasoning and bias influence basic perception of the physical world; how to assess knowledge and expertise in ourselves and others; and how people approach reasoning and knowledge among and about groups. Together, the chapters show what philosophers and psychologists can do together when they shine light on the challenges of reaching the truth and avoiding errors. Reason, Bias, and Inquiry is a multidisciplinary meditation for readers who are awash in information but are uncertain how to manage it to make informed decisions.