H.P. Grice is known principally for his influential contributions to the philosophy of language, but his work also includes treatises on the philosophy of mind, ethics, and metaphysics--much of which is unpublished to date. This collection of original essays by such philosophers as Nancy Cartwright, Donald Davidson, Gilbert Harman, and P.F. Strawson demonstrates the unified and powerful character of Grice's thoughts on being, mind, meaning, and morals. An introductory essay by the editors provides the first overview of Grice's work.

Naturalism - the thesis that all facts are natural facts, that is the facts that can be recognised and explained by a natural science - plays a central role in contemporary analytical philosophy. Yet many philosophers reject the claims of naturalism. The essays in this anthology explore the difficulties of naturalism by revealing the ambiguities surrounding it, as well as the tensions that exist among its critics.

AI-driven decisions can draw data from virtually any area of your life to make a decision about virtually any other area of your life. That creates fairness issues. Effective regulation to ensure fairness requires that AI systems be transparent. That is, regulators must have sufficient access to the factors that explain and justify the decisions. One approach to transparency is to require that systems be explainable, as that concept is understood in computer science. A system is explainable if one can (...) provide a human-understandable explanation of why it makes any particular prediction. Explainability should not be equated with transparency. To address transparency and characterize its relation to explainability, we define transparency for a regulatory purpose. A system is transparent for a regulatory purpose (r-transparent) when and only when regulators have an explanation, adequate for that purpose, of why it yields the predictions it does. Explainability remains relevant to transparency but turns out to be neither necessary nor sufficient for it. The concepts of explainability and r-transparency combine to yield four possibilities: explainable and either r-transparent or not; and not explainable and either not r-transparent or r-transparent. Combining r-transparency with ideas from the Harvard computer scientist Cynthia Dwork, we propose four requirements on AI systems. (shrink)

Reasons and reasoning were central to the work of Paul Grice, one of the most influential and admired philosophers of the late twentieth century. In the John Locke Lectures that Grice delivered in Oxford at the end of the 1970s, he set out his fundamental thoughts about these topics; Aspects of Reason is the long-awaited publication of those lectures. This immensely rich work, powerfully evocative of the mind of its author, will refresh and illuminate discussions in many areas of contemporary (...) philosophy. (shrink)

Capone and Bucca offer a socio-pragmatic analysis of President Trump’s utterance, ‘I hope you will let Flynn go’ to show that Trump illicitly tried to persuade Comey to drop the investigation of Flynn. I do not dispute that claim. Instead, I offer an overview of their argument—with one potential point of disagreement. Capone and Bucca assume, As pragmatic investigators typically do, that speakers have determinate intentions and reason in complex ways about how to realize those intentions. I suggest that speakers (...) may not have determinate intentions and may not engage in the complex types of reasoning pragmatics typically attributes to them. I do not suggest that this point undercuts Capone and Bucca’s claims; rather, it suggests that their emphasis on a normative component in pragmatic analysis is correct, and suggests that a focus on the normative component supports their claims. (shrink)

Suppose a speaker S and an audience A are in a communication coordination problem. That is, for some proposition p, they each prefer that S mean that p and that A believe p in response. How do they coordinate their thought and action to solve the problem? The Gricean answer is that they reason their way to the solution. Pragmatics makes a similar assumption. “Pragmatics involves perception augmented by some species of ‘ampliative’ inference … a sort of reasoning”. There are (...) two objections. The first is that it is not plausible to attribute such reasoning to speakers and audiences. The second objection grants, for the sake of argument, that speakers and audiences reason in the required ways. The objection is that this is not sufficient to solve coordination problems since a speaker and an audience may not know how each has reasoned. The problem is well-known in game theory, which typically solves it by assuming the parties’ preferences are common knowledge. Common knowledge is the recursive belief state in which people are know something, know they know it, know they know they know it, ad infinitum. I propose a similar solution. When people interact as speaker and audience, common knowledge arises from their perceptions of each other as fulfilling the roles of speaker and audience. The account of how common knowledge arises entails Grice’s general characterization of conversational implicatures. More precisely, it entails speakers and audiences involved in communication coordination problems typically commonly know that a relevant instance of the conditions holds. The common knowledge approach requires attributing reasoning to speakers and audiences, but it keeps those attributions to a plausible minimum. Thus the common knowledge approach is a viable alternative to current approaches that attribute extensive reasoning to speakers and audiences.A common knowledge-based approach to pragmatics would answer at least the following question: What informative generalizations are possible about the role of contexts in generating common knowledge relevant to conversational implicatures? The question is important. “Much has been learned about these domains of psychology from a focus on the problem of altruistic cooperation and the mechanisms of reciprocity. We hope that comparable insights are waiting to be discovered by psychologists as they investigate the problem of mutualistic cooperation, and the mechanisms of common knowledge are—as we might say—put out there”. (shrink)

There is now a body of evidence suggesting that the occurrence and course of schizophrenia are affected by a variety of environmental factors. _The Environment of Schizophrenia_ draws upon our knowledge of these factors in order to design innovations that will decrease its incidence and severity, while enhancing the quality of life for sufferers and their relatives. Examining environmental forces operating at the individual, domestic and broad societal levels, Richard Warner proposes feasible interventions such as: * education about obstetric risks (...) * marketing effective psychosocial treatments * business enterprises set up to employ people with mental illness * cognitive-behavioral therapy for psychosis The Environment of Schizophrenis suggests practical ways to create a better world for those who suffer from this serious illness and for those who are close to them. It will prove fresh and stimulating reading for mental health managers and policy makers, as well as psychiatrists, clinical psychologists, mental health advocates, and communications specialists. (shrink)

Consider the proposition, “Neither the motion of a body nor the action of a force affects space and time themselves”. We rejected this proposition when, in accepting the general theory of relativity, we accepted that the movement of a body or the action of a force affects the curvature of space-time. Compare the following proposition: “p and if and only if or ”. We think this is logically true; at least, most of us do. Some don’t, on empirical grounds—claiming that (...) we should interpret quantum mechanics as showing that the left-hand side can be true when the right-hand side is false. The idea is that the motions of bodies and actions of forces not only affect space-time relations, they also, as it were, affect logical relations as well. I think evidence from quantum mechanics—like empirical evidence generally—cannot possibly show that the equivalence fails to hold. I am convinced that I know a priori that p and if and only if or. My aim here is to explain the basis of this conviction. (shrink)

In the keynote essay, David Chalmers proposes that we explain consciousness by a non-reductive theory of experience which adds new basic principles to the laws of nature. This essay endorses Chalmers’ proposal but argues -- contrary to Chalmers -- that the principles of such a theory interfere with purely physical laws, since the principles entail violations of physical conservation laws. The essay argues that the qualified incorrigibility of the mental nonetheless provides compelling reason to opt for a non-reductive theory.

When is an indirect report of what a speaker meant correct? The question arises in the law. The Contract Law case of Spaulding v. Morse is a good example. Following their 1932 divorce, George Morse and Ruth Morse entered into a trust agreement in 1937 for the support of their minor son Richard. In that agreement, George promised to “pay to [Spaulding as] trustee in trust for his said minor son Richard the sum of twelve hundred dollars per year, payable (...) in equal monthly installments on the first day of each month until the entrance of Richard D. Morse into some college, university or higher institution of learning beyond the completion of the high school grades, and thereupon, instead of said payments, amounting to twelve hundred dollars yearly, he shall and will then pay to the trustee payments in the sum of twenty-two hundred dollars per year for a period of said higher education but not more than four years.” Richard graduated from high school on February 5, 1946 and, in the post-WWII continuation of the draft, was inducted into the army the following day. The question in the case is whether George, by the words of the trust agreement, meant that he would pay $1,200 per year for Richard’s support while he was in the army. Is that a correct indirect report of what George meant?The explanation I offer assumes Gricean analysis of speaker meaning, and it emphasizes the role of speaker meaning typically plays in solving coordination problems. A coordination problem is a situation “in which each person wants to participate in a group action but only if others also participate.” A classic example is a political protest: “each person might want to take part in an antigovernment protest but only if there are enough total protesters to make arrests and police repression unlikely.” Coordination problems arise in more mundane settings as well – in Spaulding v. Morse, for example. Ruth and George want to mutually agree on Richard’s support: Ruth wants to commit to an arrangement only if George does, and vice versa for George. In 1937, George and Ruth solved the problem through speaker meaning. By signing the trust agreement, George, with Ruth as his audience, meant that he obligated himself to a particular support agreement. When Ruth signed, she, with George as her audience, meant that she accepted the agreement. In general, parties often solve coordination problems through speaker meaning. If, for example, enough people can communicate their commitment to participate in the protest to enough people, the protest will take place.The account assigns a central role to the fact that speaker meaning facilitates coordination by creating relevant common knowledge. Common knowledge is “the recursive belief state in which A knows X, B knows X, A knows that B knows X, B knows that A knows X, ad infinitum.” Common knowledge facilitates coordination: “Actors coordinate when they have evidence for common knowledge, and refrain from coordinating when they do not.”. (shrink)