A Representation Theorem for a Decision Theory With Conditionals

This paper investigates the role of conditionals in hypothetical reasoning and rational decision making. Its main result is a proof of a representation theorem for preferences defined on sets of sentences (and, in particular, conditional sentences), where an agent’s preference for one sentence over another is understood to be a preference for receiving the news conveyed by the former. The theorem shows that a rational preference ordering of conditional sentences determines probability and desirability representations of the agent’s degrees of belief and desire that satisfy, in the case of non-conditional sentences, the axioms of Jeffrey’s decision theory and, in the case of conditional sentences, Adams’ expression for the probabilities of conditionals. Furthermore, the probability representation is shown to be unique and the desirability representation unique up to positive linear transformation. This revised version was published online in June 2006 with corrections to the Cover Date.     

再论经济运行中政府制度行为的道德性

政府制度行为的根本目的就在于认同、尊重和保护市场经济运行中各个主体的合法利益,维护市场经济运行的正常秩序。但是市场经济条件下政府制度行为主体不是“经济阉人”,他们有着自己的效用函数,有着自己的价值追求,必定会影响到政府制度的制定和执行的道德合理性,这是关系到经济运行秩序是否道德公正的首要因素。政府制度的制定和执行是在一定的伦理原则支配下进行的,正确的制度伦理对经济运行秩序的健康发展有着重要的促进作用。     

A Peircean Theory of Decision

It is sometimes argued that the fact that possession of perfect knowledge about the future is impossible, means that it is impossible for decisions to be rational. This reasoning is fallacious. If rationality is given a new interpretation, then decisions can be considered rational. A theory of decision that has as its basis Peirce’s theory of abduction can provide a new way of understanding decisions as rational processes. The Peircean theory of decision (i) considers decisions as part of a complete strategy, and (ii) shows that decision making is governed by the same rules as scientific abduction. These rules are neither permissive rules like rules of deductive inference nor predictive like laws of nature, but rather genuine laws of conduct that determine what step should be made, if a given end is to be reached. This revised version was published online in June 2006 with corrections to the Cover Date.     

Actual Utility, The Objection from Impracticality, and the Move to Expected Utility

Utilitarians are attracted to the idea that an act is morally right iff it leads to the best outcome. But critics have pointed out that in many cases we cannot determine which of our alternatives in fact would lead to the best outcome. So we can’t use the classic principle to determine what we should do. It’s not “practical”; it’s not “action-guiding”. Some take this to be a serious objection to utilitarianism, since they think a moral theory ought to be practical and action-guiding. In response, some utilitarians propose to modify utilitarianism by replacing talk of actual utility with talk of expected utility. Others propose to leave the original utilitarian principle in place, but to combine it with a decision procedure involving expected utility. What all these philosophers have in common is this: they move toward expected utility in order to defend utilitarianism against the impracticality objection. My aim in this paper is to cast doubt on this way of replying to the objection. My central claim is that if utilitarians are worried about the impracticality objection, they should not turn to expected utility utilitarianism. That theory does not provide the basis for a cogent reply to the objection. Originally presented at the 2004 Bellingham Summer Philosophy Conference, Bellingham Washington, August 2, 2004, with comments by Gustaf Arrhenius and Elizabeth Harman. I am grateful to Arrhenius and Harman for their challenging criticism, as well as to Chris Heathwood, Michael Zimmerman, Owen McLeod, Elinor Mason, Eric Moore and other participants at the Bellingham Conference for comments and suggestions. In October, 2004 I discovered Mark Strasser’s ‘Actual Versus Probable Utilitarianism’. I see that in that paper Strasser anticipates a number of the points I make here.     

Moral Self-Knowledge in Kantian Ethics

Kant’s duty of self-knowledge demands that one know one’s heart—the quality of one’s will in relation to duty. Self-knowledge requires that an agent subvert feelings which fuel self-aggrandizing narratives and increase self-conceit; she must adopt the standpoint of the rational agent constrained by the requirements of reason in order to gain information about her moral constitution. This is not I argue, contra Nancy Sherman, in order to assess the moral goodness of her conduct. Insofar as sound moral practice requires moral self-knowledge and moral self-knowledge requires a theoretical commitment to a conception of the moral self, sound moral agency is for Kant crucially tied to theory. Kant plausibly holds that self-knowledge is a protection against moral confusion and self-deception. I conclude that although his account relies too heavily on the awareness of moral law to explain its connection to moral development, it is insightful and important in Kantian ethics.     

Bayesian probability

Bayesian decision theory is here construed as explicating a particular concept of rational choice and Bayesian probability is taken to be the concept of probability used in that theory. Bayesian probability is usually identified with the agent’s degrees of belief but that interpretation makes Bayesian decision theory a poor explication of the relevant concept of rational choice. A satisfactory conception of Bayesian decision theory is obtained by taking Bayesian probability to be an explicatum for inductive probability given the agent’s evidence.     

Knowing that, knowing how, and knowing to do

Ryle’s distinction between knowing that and knowing how has recently been challenged. The paper first briefly defends the distinction and then proceeds to address the question of classifying moral knowledge. Moral knowledge is special in that it is practical, that is, it is essentially a motive. Hence the way we understand moral knowledge crucially depends on the way we understand motivation. The Humean theory of motivation is wrong in saying that reason cannot be a motive, but right in saying that desire is essential for motivating us. The right response to the Humean theory of motivation is to see that moral knowledge is desire-related rationality or thought-related desire. Moral knowledge is neither knowing that nor knowing how but rather a third species of knowledge which we may call “knowing to do.” Knowing to do is to be rationally disposed to do the right thing. This understanding of moral knowledge is exactly what we can learn from Aristotle’s ethics.     

Taking Stock of Infinite Value: Pascal’s Wager and Relative Utilities

Among recent objections to Pascal’s Wager, two are especially compelling. The first is that decision theory, and specifically the requirement of maximizing expected utility, is incompatible with infinite utility values. The second is that even if infinite utility values are admitted, the argument of the Wager is invalid provided that we allow mixed strategies. Furthermore, Hájek (Philosophical Review 112, 2003) has shown that reformulations of Pascal’s Wager that address these criticisms inevitably lead to arguments that are philosophically unsatisfying and historically unfaithful. Both the objections and Hájek’s philosophical worries disappear, however, if we represent our preferences using relative utilities (generalized utility ratios) rather than a one-place utility function. Relative utilities provide a conservative way to make sense of infinite value that preserves the familiar equation of rationality with the maximization of expected utility. They also provide a means of investigating a broader class of problems related to the Wager.     

孟子性善论新探

In Mencius’ theory of the original goodness in human nature, fate is the original source of xing (nature). Heart is the appearance of nature. There are two aspects to nature and heart: ti (form) and yong (function). From the perspective of form, nature is liangzhi (the goodness in conscience) and liangneng (the inborn ability to be good) in human beings and heart is human’s conscience and original heart. From the perspective of function, nature is the four things of benevolence, righteousness, propriety and wisdom, and heart consists in compassion, shame, respect, right and wrong. As the foundation for the theory of the original goodness in human nature, conscience and heart are a combination of human moral instinct, moral rationality and moral volition, whereas moral instinct gradually rises to moral volition and passes through moral rationality. Mencius’ theory of the original goodness in human nature is not a theory of future goodness, but a theory of original goodness. Translated by Wang Bei from Qilu Xuekan 齐鲁学刊(Journal of Qilu), 2006, (4): 16–20     

Utility and framing

Standard principles of rational decision assume that an option’s utility is both comprehensive and accessible. These features constrain interpretations of an option’s utility. This essay presents a way of understanding utility and laws of utility. It explains the relation between an option’s utility and its outcome’s utility and argues that an option’s utility is relative to a specification of the option. Utility’s relativity explains how a decision problem’s framing affects an option’s utility and its rationality even for an agent who is cognitively perfect and lacks only empirical information. The essay rewrites standard laws of utility to accommodate relativization to propositions’ specifications. The new laws are generalizations of the standard laws and yield them as special cases.     

The Harmful Influence of Decision Theory on Ethics

In the last half century, decision theory has had a deep influence on moral theory. Its impact has largely been beneficial. However, it has also given rise to some problems, two of which are discussed here. First, issues such as risk-taking and risk imposition have been left out of ethics since they are believed to belong to decision theory, and consequently the ethical aspects of these issues have not been treated in either discipline. Secondly, ethics has adopted the decision-theoretical idea that action-guidance has to be based on cause–effect or means–ends relationships between an individual action and its possible outcomes. This is problematic since the morally relevant connections between an action and future events are not fully covered by such relationships. In response to the first problem it is proposed that moral theory should deal directly and extensively with issues such as risk-taking and risk imposition, thereby intruding unabashedly into the traditional territory of decision theory. As a partial response to the second problem it is proposed that moral theorizing should release itself from the decision-theoretical requirement that the moral status of an action has to be derivable from the consequences (or other properties) that are assignable to that action alone. In particular, the effects that an action can have in combination with other actions by the same or other agents are valid arguments in an action-guiding moral discourse, even if its contribution to these combined consequences cannot be isolated and evaluated separately.     

Agrarian Philosophy and Ecological Ethics

Mainstream environmental ethics grew out of an approach to value that was rooted in a particular conception of rationality and rational choice. As weaknesses in this approach have become more evident, environmental philosophers have experimented with both virtue ethics and with pragmatism as alternative starting points for developing a more truly ecological orientation to environmental philosophy. However, it is possible to see both virtue ethics and pragmatism as emerging from older philosophical traditions that are here characterized as “agrarian.” Agrarian philosophy stresses the role of nature, soil and climate in the formation of moral character as well as social and political institutions. As such, reaching back to the agrarian tradition may provide a way to move forward with both virtue oriented themes as well as pragmatist themes in developing ecological ethics.     

Ethics and Intuitions: A Reply to Singer

In a recent paper, Peter Singer suggests that some interesting new findings in experimental moral psychology support what he has contended all along—namely that intuitions should play little or no role in adequate justifications of normative ethical positions. Not only this but, according to Singer, these findings point to a central flaw in the method (or epistemological theory) of reflective equilibrium used by many contemporary moral philosophers. In this paper, we try to defend reflective equilibrium from Singer’s attack and, in part, we do this by discussing Singer’s own favoured moral methodology as outlined in his Practical Ethics. Although basing ethics solely on (certain kinds of) intuitions certainly is problematic, we argue, basing it solely on ‘reason’ gives rise to similar problems. The best solution would arguably be one which could strike a balance between the two—but, we suggest, this is precisely what reflective equilibrium is all about.     

Does Education Influence Ethical Decisions? An International Study

This study examined whether having attended a public, private or religious affiliated grade and/or high school influenced a college student’s ethical decision making process. We also examined whether having taken an ethics course in college influences a student’s ethical decision making process. Our sample included 508 accounting students (237 men and 271 women) from Albania, Ecuador, Ireland and the United States. Our analyses indicated no differences in ethical decision making that associated with either grade-or-high-school education. While our data showed no difference in the reported attitudes between students from Ecuador and the United States after controlling for social desirability response bias, we found significant differences between the attitudes students from the United States and students from both Albania and Ireland. While gender was also significant for six of our seven scenarios, social desirability response bias was significant in all of our scenarios.     

Desirability foundations of robust rational decision making

Recent work has formally linked the traditional axiomatisation of incomplete preferences à la Anscombe-Aumann with the theory of desirability developed in the context of imprecise probability, by showing in particular that they are the very same theory. The equivalence has been established under the constraint that the set of possible prizes is finite. In this paper, we relax such a constraint, thus de facto creating one of the most general theories of rationality and decision making available today. We provide the theory with a sound interpretation and with basic notions, and results, for the separation of beliefs and values, and for the case of complete preferences. Moreover, we discuss the role of conglomerability for the presented theory, arguing that it should be a rationality requirement under very broad conditions.

     

Kant,Freud, and the ethical critique of religion

This paper engages Freud’s relation to Kant, with specific reference to each theorist’s articulation of the interconnections between ethics and religion. I argue that there is in fact a constructive approach to ethics and religion in Freud’s thought, and that this approach can be better understood by examining it in relation to Kant’s formulations on these topics. Freud’s thinking about religion and ethics participates in the Enlightenment heritage, with its emphasis on autonomy and rationality, of which Kant’s model of practical reason is in many ways exemplary. At the same time, Freud advances Kantian thinking in certain important respects; his work offers a more somatically, socially, and historically grounded approach to the formation of rational and ethical capacities, and hence makes it more compatible with contemporary concerns and orientations that eschew the pitfalls of ahistorical idealist orientations.     

The Relevance of Decision Theory to Ethical Theory

Morality for the purposes of this paper consists of sets of rules or principles intended for the general regulation of conduct for all. Intuitionist accounts of morality are rejected as making reasoned analysis of morals impossible. In many interactions, there is partial conflict and partial cooperation. From the general social point of view, the rational thing to propose is that we steer clear of conflict and promote cooperation. This is what it is rational to propose to reinforce, and to assist in reinforcing in society; it is not necessarily what it is individually rational to do. Even so, given the general situation, the rationality of its reinforcement will typically support the rationality of individual action as well. Game theory makes it possible to clarify these interactions, and these proposals for social solutions.     

Teaching ethics to scientists and engineers: Moral agents and moral problems

In this paper I outline an “agent-centered” approach to learning ethics. The approach is “agent-centered” in that its central aim is to prepare students toact wisely and responsibly when faced with moral problems. The methods characteristic of this approach are suitable for integrating material on professional and research ethics into technical courses, as well as for free-standing ethics courses. The analogy I draw between ethical problems and design problems clarifies the character of ethical problems as they are experienced by those who must respond to them. It exposes the mistake, common in ethics teaching, of misrepresenting moral problems as multiple-choice problems, especially in the form of ‘dilemmas’, that is, a forced choice between two unacceptable alternatives. Furthermore, I clarify the importance for responsible practice of recognizing any ambiguity in the problem situation. To foster in students the skills they need, teaching examples should preserve the open-ended, multiply-constrained, and ambiguous character of problem situations as experienced by the agent. I give guidelines for constructing open-ended scenarios that present moral problems much as an agent would experience them — guidelines which strongly influenced the construction of ‘cases’ in the latest edition of “On Being a Scientist” — and I discuss how to present historical cases and cases from the instructor’s own experience to best foster agent-centered learning. This paper is a modification of material originally included in the handbook which accompanied the AAAS Seminar “Teaching Ethics in Science and Engineering”, 10–11 February 1993.     

More than Lip Service: The Development and Implementation Plan of an Ethics Decision-Making Framework for an Integrated Undergraduate Business Curriculum

In the face of the business community’s widening concern about corporate ethical behavior, business schools are reexamining how they ensure that students appreciate the ethical implications of managerial decision making and have the analytical tools necessary to confront ethical dilemmas. The current approaches adopted by colleges vary from mere ‘lip service’ to embedding ethics at the core of the curriculum. This paper examines the experience of several US universities that have incorporated business ethics into their curricula. In particular, the paper describes the issues facing Central Washington University as it seeks to integrate ethical decision making into its core undergraduate business curriculum. Issues addressed include the technical challenges of establishing a common element of curriculum across the various business disciplines, determining the major conceptual foundations of ‘ethical thinking’ while recognizing students’ existing value systems, and how to obtain ‘buy in’ by faculty to the initiative.     

Ethics Beyond Moral Theory

I develop an anti‐theory view of ethics. Moral theory (Kantian, utilitarian, virtue ethical, etc.) is the dominant approach to ethics among academic philosophers. But moral theory's hunt for a single Master Factor (utility, universalisability, virtue . . .) is implausibly systematising and reductionist. Perhaps scientism drives the approach? But good science always insists on respect for the data, even messy data: I criticise Singer's remarks on infanticide as a clear instance of moral theory failing to respect the data of moral perceptions and moral intuitions. Moral theory also fails to provide a coherent basis for real‐world motivation, justification, explanation, and prediction of good and bad, right and wrong. Consider for instance the marginal place of love in moral theory, compared with its central place in people's actual ethical outlooks and decision making. Hence, moral theory typically fails to ground any adequate ethical outlook. I propose that it is the notion of an ethical outlook that philosophical ethicists should pursue, not the unfruitful and distorting notion of a moral theory.