Gilbert Harman

Philosophers sometimes approach meaning metaphorically, for example, by speaking of “grasping” meanings, as if understanding consists in getting mental hands around something.1 Philosophers say that a theory of meaning should be a theory about the meanings that people assign to expressions in their language, that to understand other people requires identifying the meanings they associate with what they are saying, and that to translate an expression of another language into your own is to find an expression in your language with the same meaning as the expression in the other language.

INTRODUCTION In my view, justice is entirely conventional; indeed, all of morality consists in conventions that are the result of continual tacit bargaining and adjustment. This is not to say social arrangements are just whenever they are in accordance with the principles of justice accepted in that society. We can use our own principles of justice in judging the institutions of another society, and we can appeal to some principles we accept in order to criticize other principles we accept. To use David Hume's model of the relevant sort of convention, two people rowing a boat each continually adjusts his or her rate of rowing to the other so that they come to row at the same rate, a rate that is normally somewhere between the rate at which each would prefer to row. In the same way the basic principles of justice accepted by people of different powers and resources are the result of a continually changing compromise affecting such things as the relative importance attached to helping others as compared with the importance attached to not harming others. Hume's rowers provide an example of a “convention” that is normally completely tacit. There are other models in which the bargaining can be more explicit, for example when a seller comes to set prices that are acceptable to customers, when employers reach understandings with employees concerning wages, or when political groups influence legislation. I want eventually to consider the implications for moral reasoning and argument of the thesis that principles of justice are entirely the result of implicit bargaining and convention of this sort.

Theories of adverbial modification can be roughly distinguished into two sorts. One kind of theory takes logical form to follow surface grammatical form. Adverbs are treated as unanalyzable logical operators that turn a predicate or sentence into a different predicate or sentence respectively. And new rules of logic are stated for these operators. A different kind of theory does not suppose that logical form must parallel surface grammatical form. It allows that logical form may have more to do with deeper structures that might be studied in transformational grammar. Adverbs are treated as surface forms of the underlying predicates represented by corresponding adjectives and verbs. 'Slowly' is derived from 'slow'; 'intentionally' from 'intentional' or 'intend'; etc. And new rules of logic are avoided where they can be. In this paper I attempt to state some of the advantages of the second sort of theory. My procedure will be this. First, I will try to say in outline what theories of logical form are. Then I will state five principles for evaluating such theories. Next, I will sketch the sorts of analyses acceptance of principles (1)-(5) leads to. In particular I will talk about adverbial phrases (e.g. locatives) that are best analyzed in terms of implicit references to events, relative modifiers (like 'large') which relate something to a comparison class, and 'that' clauses taken as names of propositions. By appealing to principles (1)-(5) I will defend these analyses against certain others, one that appeals to many logical operators, a second that treats all sentences as names of propositions, and a third that sees implicit reference to possible worlds in the language being analyzed. Finally, I will offer a pragmatic defense of my approach in terms of principles (1)-(5) as against a different approach that appeals to possible world semantics.

Harman distinguishes between two uses of the term “logic”: as referring either to the theory of implication or to the theory of reasoning, which are quite distinct. His interest here is reasoning: a process that can modify intentions and beliefs. To a first approximation, theoretical reasoning is concerned with what to believe and practical reasoning is concerned with what to intend to do, although it is possible to have practical reasons to believe something. Practical considerations are relevant to whether to engage in theoretical inquiry into a given question, the extent of time and other resources to devote to such inquiry, and whether and when to end such inquiry. Simplicity and conservatism play a role in theoretical reasoning that can be given a practical justification without allowing wishful thinking into theoretical reasoning, a justification that can also be given a non-practical interpretation.

In his elegant discussion, Sripada distinguishes three possible innate bases for aspects of morality: (1) certain specific principles might be innate, (2) a less simple “principles and parameters” model might apply, and (3) innate biases might have have some influence over what morality a person acquires without determining the content of that morality.1 He argues against (1) and (2) and in favor of (3). Without disputing his case for (3) I will try to say why I think that his arguments against (1) and (2) are inconclusive and that it remains possible that all three kinds of bases have a significant impact on human morality.

In _Reliable Reasoning_, Gilbert Harman and Sanjeev Kulkarni -- a philosopher and an engineer -- argue that philosophy and cognitive science can benefit from statistical learning theory, the theory that lies behind recent advances in machine learning. The philosophical problem of induction, for example, is in part about the reliability of inductive reasoning, where the reliability of a method is measured by its statistically expected percentage of errors -- a central topic in SLT. After discussing philosophical attempts to evade the problem of induction, Harman and Kulkarni provide an admirably clear account of the basic framework of SLT and its implications for inductive reasoning. They explain the Vapnik-Chervonenkis dimension of a set of hypotheses and distinguish two kinds of inductive reasoning. The authors discuss various topics in machine learning, including nearest-neighbor methods, neural networks, and support vector machines. Finally, they describe transductive reasoning and suggest possible new models of human reasoning suggested by developments in SLT

Virtue ethics is a type of ethical theory in which the notion of virtue or good character plays a central role. This splendid new book describes a “program” for the development of a particular (“Aristotelian”) form of virtue ethics. The book is intended to be used as a textbook, but should be read by anyone interested in moral philosophy. Hursthouse has been a major contributor to the development of virtue ethics and the program she describes, while making use of the many contributions of others, is very much her program, with numerous new ideas and insights.

In this article, we provide a tutorial overview of some aspects of statistical learning theory, which also goes by other names such as statistical pattern recognition, nonparametric classification and estimation, and supervised learning. We focus on the problem of two-class pattern classification for various reasons. This problem is rich enough to capture many of the interesting aspects that are present in the cases of more than two classes and in the problem of estimation, and many of the results can be extended to these cases. Focusing on two-class pattern classification simplifies our discussion, and yet it is directly applicable to a wide range of practical settings

Gauthier's title is potentially misleading. The phrase “morals by agreement” suggests a social contract theory of morality according to which basic moral principles arise out of an actual or hypothetical agreement. John Rawls defends a hypothetical agreement version, arguing that the basic principles of justice are those that would be agreed to in an initial position of fair equality. I myself defend an actual agreement version, arguing that the moral principles that apply to a person derive from implicit conventions the person has accepted in dealing with other people. Gauthier's view is different from either of these sorts of contract theory. Instead, he holds that certain basic principles of impartiality are prior to actual agreements