Radical scepticism contends that our knowledge of the external world is impossible. Particularly, radical scepticism can be motivated by the closure principle. Several commentators have noted that a straightforward way to respond to such arguments is via externalist strategies, e.g., Goldman, Greco, Bergmann. However, these externalist strategies are not effective against a slightly weaker form of the argument, a closure principle for rationally grounded knowledge, closureRK.\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${closure}_{RK.}$$\end{document} The sceptical argument, framed around the (...) closureRK\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {closure}_{\mathrm{RK}}$$\end{document} principle, targets rationally grounded knowledge. Although externalist strategies are ineffective against this form of argument, its conclusion can nonetheless be resisted by combining, in a novel way, the resources of Wittgenstein and Davidson. In particular, I argue that the sceptic is assuming an unrestricted way of using the closureRK\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {closure}_{\mathrm{RK}}$$\end{document} principle, which is incorrect. Alternatively, I argue for The Conditionality of Rational Support Thesis, i.e., the thesis that rational support via competent deduction is conditional. In particular, rational support must be provided within an evaluative system in which hinge propositions are presupposed and contentful beliefs are being evaluated. In the end, we can resist the closureRK\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {closure}_{\mathrm{RK }}$$\end{document}-based sceptical argument while retaining the closureRK\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {closure}_{\mathrm{RK}}$$\end{document} principle. (shrink)

Williams claims that the only particular moral truths, and perhaps the only moral truths of any kind, are nonobjective, i.e., culture-bound. For Lovibond we have moral truths when an assertion-condition is satisfied, and that is determined by the voice of the relevant moral authority as embodied in the institutions of the sittlich morality. According to MacIntyre one must speak from within a living tradition for which there can be no external rational grounding. However, if my criticisms of traditional (...) philosophical ethics are sound, such relativist and historicist views are unjustified, and the project of seeking a rationally grounded morality is perfectly in order. (shrink)

Recent work has argued that there may be cases where no attitude – including withholding – is rationally permissible. In this paper, I consider two such epistemic dilemmas, John Turri’s Dilemma from Testimony and David Alexander’s Dilemma from Doubt. Turri presents a case where one’s only evidence rules out withholding (without warranting belief or disbelief). Alexander presents a case where higher order doubt means one must withhold judgment over whether withholding judgment is rational. In both cases, the authors conclude (...) that no doxastic attitude is warranted. In this paper, I argue against the possibility of these epistemic dilemmas. I argue that withholding cannot be irrational in either case. But meditating on the dilemmas gives us an important – and overlooked – insight into the nature of rational withholding. First, rational withholding is a function of evidence failing to sufficiently support belief or disbelief. As a result, withholding is not symmetrical to belief and disbelief. Second, there can be two distinct grounds for rational withholding. First, propositional withholding, which arises when our evidence does not support belief or disbelief in p. And second, doxastic withholding, which arises when we cannot determine whether our evidence supports belief or disbelief in p. Accepting two grounds of rational withholding licenses a kind of Weak Permissivism. But this Weak Permissivism should not be troubling to anyone. (shrink)

Normativism, the approach that judges human rationality by comparison against normative standards, has recently come under intensive criticism as unsuitable for psychological enquiry, and it has been suggested that it should be replaced with a descriptivist paradigm. My goal in this paper is to outline and defend a meta-theoretical framework of such a paradigm, grounded rationality, based on the related principles of descriptivism and (moderate) epistemic relativism. Bounded rationality takes into account universal biological and cognitive limitations on human rationality. Grounded (...) rationality accepts universal constraints but adds cognitive variability: Within-individual variability (dual processing), and individual as well as cultural differences. I discuss the implications of grounded rationality to dual processing, proposing that investing limited cognitive resources in analytic processing might be less instrumentally rational for individuals with low cognitive ability. (shrink)

[Anne:] “I can't, I'm in the depths of despair. Can you eat when you are in the depths of despair?”“I've never been in the depths of despair, so I can't say,” said Marilla.“Weren't you? Well did you ever try to imagine you were in the depths of despair?”” No, I didn't.”“Then I don't think you can understand what it's like. It's a very uncomfortable feeling indeed. When you try to eat a lump comes right up in your throat and you (...) can't swallow anything, not even if it was a chocolate caramel.”—L.M. Montgomery, Anne of Green Gables.Emotion, as a “suprarational” property, transcends rationality in that it can be thought of as a group, contextual rather than as a solely individual trait, and thus is a higher order property, as the above quote suggests. This proposal arises from a metatheoretical analysis of models available to broach questions of emotion. I use metatheoretical in the sense of both the context of theory production and the theory of theory. From the first arose the idea that emotion, through the use of irrationality, has surfaced as a working equivalent to inexplicability or rational relativity, and can be modelled more adequately as suprarational, with a unique nature in its own right. The latter led me to propose that the concept of emotion as contextual, a higher order group level property, is possible and tentatively profitable. (shrink)

Audi defends his views in epistemology against the challenges raised by Laurence BonJour, Timothy Williamson, and William Alston in Part II, “Knowledge, Justification, and Acceptance.” Specifically, Audi addresses his concerns about the sorts of beliefs that can be noninferentially justified, the sense in which the grounds of justification may be internal, and the range of attitudes that admit of justification and rationality.

This book is a wide-ranging treatment of central topics in epistemology. It provides conceptions of belief and knowledge, offers a theory of how they are grounded in our experience and in the social context of testimony, and connects them with the will and with action, moral responsibility, and intellectual virtue.

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.

Over the course of the past several decades, Kant scholars have made significant headway in showing that emotions play a more significant role in Kant's ethics than has traditionally been assumed. Closer attention has been paid to the Metaphysics of Morals (MS) where Kant provides important insights about the value of moral sentiments and the role they should play in our lives. One particularly important discussion occurs in sections 34 and 35 of the Doctrine of Virtue where Kant claims we (...) have a duty to use sympathetic feelings "as a means of promoting active and rational benevolence" (MS 6:457). Kant labels this the "duty of humanity," and he suggests that nature has implanted sympathetic feelings in us "to do what the representation of duty alone might not accomplish" (ibid.). Commentators have rightly highlighted these remarks as prime evidence that feelings do play a positive role in Kant's ethics after all. (shrink)

Rev. version of the author's doctoral dissertation.

What, normatively speaking, are the grounds of rational choice? This paper defends ‘comparativism’, the view that a comparative fact grounds rational choice. It examines three of the most serious challenges to comparativism: 1) that sometimes what grounds rational choice is an exclusionary-type relation among alternatives; 2) that an absolute fact such as that it’s your duty or conforms to the Categorial Imperative grounds rational choice; and 3) that rational choice between incomparables is possible, and in (...) particular, all that is needed for the possibility of rational choice is that one alternative is not worse than the others. Each challenge is questioned. If comparativism is correct, then no matter what normative theory you favor, your answer to the question, ‘What makes my choice rational?’ must be comparative in form. In this way, comparativism provides a framework for normative theorizing. (shrink)

Gillian Hadfield and Stephen Macedo argue that late-Rawlsian stability for the right reasons, that is, stability based on participants’ reciprocal cooperation, can arise even if participants start out only economically rational and indifferent to justice. As they explain, even purely rational actors have an interest in having a neutral “shared logic” to coordinate decentralized enforcement of social cooperation and in internalizing that logic. Once developed and internalized, they add, that logic renders their reasoning public, and their persons, reasonable (...) and responsive to Rawlsian justice considerations. Hadfield and Macedo’s account seeks to lend Rawlsian contractualism a contractarian foundation. I raise five challenges to their account, focusing on the sense in which actors “start out” purely rational; on illiberal means that may serve rational citizens’ joint ends; on the counterexample of Martin Luther King; on the difficulty of specifying the mechanism for shared logic-internalization; and on the further counterexample of a medical student who internalizes compassion, only upon the condition that it serves his rational aims. (shrink)

H.P. Grice is a distinguished philosopher predominantly known for his influential contributions to the philosophy of language, but that is only one strand in a rich tapestry of ideas bearing on the philosophy of mind, ethics, and metaphysics as well. Some of the essays in this collection of original papers by leading philosophers edited by Grandy and Warner develop Grice's earlier work in the philosophy of language, but most of them discuss or present his newer and less-known work. Together they (...) demonstrate the unified and powerful character of his thoughts on being, mind, meaning, and morals. An introductory essay provides some of the first overview of Grice's thought, and makes explicit some of the relations among the essays. Grice's substantial response is followed by nineteen contributed papers whose authors include Donald Davidson, Stephen Schiffer, John Searle, and P.F. Strawson. The Times Literary Supplement writes of Grice: 'the only leader of whom it is true that the level of the discipline would be raised if most philosophers took him as a model of how to think and write.' This paperback edition replaces the hardback, published March 1986. (shrink)

In early 2020, a number of countries developed and published intensive care triage guidelines for the pandemic. Several of those guidelines, especially in the UK, encouraged the explicit assessment...

This chapter contains sections titled: Introduction Perfect Rationality A Dubious Presupposition Reasoning Animals and Their History Rationality without Perfection.

L.A. Paul has recently argued that, on the standard model of rationality, individuals cannot make rational decisions about whether to have a child or not. In this paper, I show that Paul’s arguments do not plausibly demonstrate that the standard model of rationality precludes rational decisions to have a child. I argue that there are phenomenal and non-phenomenal values that can be used to determine the value that having a child will have for us and, in turn, that (...) can be used to make rational decisions about whether to have a child or not. I also argue that we can have an approximate idea of what it is like for us to have a child, even before we have a child and that, on the standard model, this is sufficient to make rational decisions to have a child. (shrink)

Despite their success in describing and predicting cognitive behavior, the plausibility of so-called ‘rational explanations’ is often contested on the grounds of computational intractability. Several cognitive scientists have argued that such intractability is an orthogonal pseudoproblem, however, since rational explanations account for the ‘why’ of cognition but are agnostic about the ‘how’. Their central premise is that humans do not actually perform the rational calculations posited by their models, but only act as if they do. Whether or (...) not the problem of intractability is solved by recourse to ‘as if’ explanations critically depends, inter alia, on the semantics of the ‘as if’ connective. We examine the five most sensible explications in the literature, and conclude that none of them circumvents the problem. As a result, rational ‘as if’ explanations must obey the minimal computational constraint of tractability. (shrink)

A broad evolutionary perspective is essential to fully reverse figure and ground in the rationality debate. Humans' evolved psychological architecture was designed to produce inferences that were adaptive, not normatively logical. This perspective points to several predictable sources of errors in modern laboratory reasoning tasks, including inherent, systematic biases in information-processing systems explained by Error Management Theory.

Wittgenstein does not talk much explicitly about reason as a general concept, but this paper aims to sketch some thoughts which might fit his later outlook and which are suggested by his approach to language. The need for some notions in the area of ‘reason’ and ‘rationality’ are rooted in our ability to engage in discursive and persuasive linguistic exchanges. But because such exchanges can (as Wittgenstein emphasises) be so various, we should expect the notions to come in many versions, (...) shaped by history and culture. Awareness of this variety, and of the distinctive elements of our own Western European history, may provide some defence against the temptation of conceptions, such as that of ‘perfect rationality’, which operate in unhelpfully simplified and idealised terms. (shrink)

This chapter formulates a rational uniqueness principle holding that those who are epistemic peers on a proposition, in that they know that they share all rational considerations concerning the truth of the proposition, cannot be justified in having different attitudes toward it. It then argues against the principle, primarily on the grounds that such peers may rationally regard themselves as differing in their basis for rational belief, or their evidence, on the topic. The rationality of their differing (...) perspectives can justify having different attitudes toward the disputed proposition. (shrink)

In deriving his moral code, Hobbes does not appeal to any mind-independent good, natural human telos, or innate human sympathies. Instead he assumes a subjectivist theory of value and an egoistic theory of human motivation. Some critics, however, doubt that his laws of nature can be constructed from such scant material. Hobbes ultimately justifies the acceptance of moral laws by the fact that they promote self-preservation. But, as Hobbes himself acknowledges, not everyone prefers survival over natural liberty. In this essay (...) I show that Hobbes can argue that the desire for self-preservation is rationally required by modifying his subjectivist theory of the good to equate what is good for an agent only with the satisfaction of desires (for her own life) that she has at the time that they are satisfied. It is thus irrational to prefer postmortem glory over survival since an agent must be alive for glory to have any value for her. (shrink)

Applying critical sociological theory, this book explores the shortcomings of popular tactics in animal liberation efforts. Building a case for a scientifically-grounded grassroots approach, it is argued that professionalized advocacy that works in the service of theistic, capitalist, patriarchal institutions will find difficulty achieving success.

Economists tend to view ignorance as ?rational,? neglecting the possibility that ignorance is unintentional. This oversight is reflected in economists? model of ?information search,? which can be fruitfully contrasted with ?information browsing.? Information searches are designed to discover unknown knowns, whose value is calculable ex ante, such that this value justifies the cost of the search. In this model of human information acquisition, there is no primal or ?radical? ignorance that might prevent people from knowing which information to look (...) for, lacking omniscience. Unlike ignorance that is rationally chosen on the basis of an accurate cost/benefit calculation, radical ignorance can explain human error. An account of error as grounded in radical ignorance bypasses the need to appeal to irrationality in order to explain economic (and other) mistakes. (shrink)

Epistemic akrasia can be rational. I consider a lonely pragmatist who believes that her imaginary friend doesn’t exist, and also believes on pragmatic grounds that she should believe in him. She rationally believes that her imaginary friend doesn’t exist, rationally follows various sources of evidence to the view that she should believe in him to end her loneliness, and rationally holds these attitudes simultaneously. Evidentialism suggests that her ambivalent epistemic state is rational, as considerations grounded in the value (...) of truth justify her beliefs. (shrink)

Economists tend to view ignorance as “rational,” neglecting the possibility that ignorance is unintentional. This oversight is reflected in economists’ model of “information search,” which can be fruitfully contrasted with “information browsing.” Information searches are designed to discover unknown knowns, whose value is calculable ex ante, such that this value justifies the cost of the search. In this model of human information acquisition, there is no primal or “radical” ignorance that might prevent people from knowing which information to look (...) for, lacking omniscience. Unlike ignorance that is rationally chosen on the basis of an accurate cost/benefit calculation, radical ignorance can explain human error. An account of error as grounded in radical ignorance bypasses the need to appeal to irrationality in order to explain economic (and other) mistakes. (shrink)

In this paper, I will argue that a prominent theory of rationality could ground an argument for the existence of a self. Specifically, a self that is only captured in first- personal beliefs, and which is hence distinct from the physical body, in so far as the latter can be captured in third-personal beliefs. First-personal beliefs are beliefs characteristically expressed with first-personal utterances. Perry has argued that first- personal beliefs are necessary for certain actions. On closer examination, the appropriate conclusion (...) of Perry's arguments is that first-personal beliefs are necessary for rational actions. If one adopts a popular view of rationality according to which it consists in the coherence of one's attitudes, one can give first-personal beliefs a unique role in rationality without giving them a unique content. However, recently it has been argued that rationality consists in responding appropriately to the world. According to this latter theory of rationality, a belief is only necessary for a rational action in so far as one must have a belief in order to be aware of and respond to the world. On this latter theory, if first-personal beliefs are to have a unique role in rationality, first-personal beliefs must capture something unique about the world. The conclusions of the paper are twofold. Firstly, we ought to see the problems surrounding essential first-personal beliefs as bound up with rationality. Secondly, if we follow current trends in the philosophical study of rationality we could be led into conflict with common responses to these problems and towards the existence of a non-physical self. (shrink)

Personal autonomy is often lauded as a key value in contemporary Western bioethics. Though the claim that there is an important relationship between autonomy and rationality is often treated as uncontroversial in this sphere, there is also considerable disagreement about how we should cash out the relationship. In particular, it is unclear whether a rationalist view of autonomy can be compatible with legal judgments that enshrine a patient's right to refuse medical treatment, regardless of whether the reasons underpinning the choice (...) are known and rational, or indeed whether they even exist. Jonathan Pugh brings recent philosophical work on the nature of rationality to bear on the question of how we should understand personal autonomy in contemporary bioethics. In doing so, he develops a new framework for thinking about the concept of autonomy, one that is grounded in an understanding of the different roles that rational beliefs and rational desires have to play in it. Pugh's account allows for a deeper understanding of d the relationship between our freedom to act and our capacity to decide autonomously. His rationalist perspective is contrasted with other prominent accounts of autonomy in bioethics, and the revisionary implications it has for practical questions in biomedicine are also outlined. (shrink)

Theories of rational decision making often abstract away from computational and other resource limitations faced by real agents. An alternative approach known as resource rationality puts such matters front and center, grounding choice and decision in the rational use of finite resources. Anticipated by earlier work in economics and in computer science, this approach has recently seen rapid development and application in the cognitive sciences. Here, the theory of rationality plays a dual role, both as a framework (...) for normative assessment and as a source of scientific hypotheses about how mental processes in fact work. The latter project, often called rational analysis, depends for its success on a fine-grained characterization of the computational problem facing a decision maker, which may in turn depend on realistic assumptions about what the relevant agent is like. As a consequence, resource rationality involves a delicate, but often fruitful interplay between the normative and the descriptive. (shrink)

This book explores the constitutional, legally binding dimension to legisprudence in the light of the German Federal Constitutional Court's approach to rational lawmaking. Over the last decades this court has been remarkably active in applying legisprudential criteria and standards when reviewing parliamentary laws. It has thus supplied observers with a unique material to analyse the lawmakers' duty to legislate rationally, and to assess the virtues and drawbacks of this strand of judicial control in a constitutional democracy. By bringing together (...) legislation experts and public law scholars to elaborate on 'legisprudence under review', this contributed volume aspires to shed light on the constitutionalisation of rational lawmaking as a controversial trend gaining ground in both national and international jurisdictions. The book is divided into five parts. Part I frames the two key issues pervading the whole collection: the intricate relationship between judicial review and democracy, on the one hand, and the possibility of improving and rationalizing the task of legislation under the current circumstances of politics, on the other. Part II provides an overview of the judicial review of rational lawmaking, laying special emphasis on the duty of legislative justification imposed on lawmakers by the German Constitutional Court. Part III is devoted to the review of the systemic rationality of legislation, in particular to the requirements of legislative consistence and coherence as developed by this court. Contributions in Part IV revolve around the judicial scrutiny of the socio-empirical elements of rational lawmaking, with the control of legislative facts and impacts and the problem of symbolic laws being the central topics. Finally, Part V draws on the German case law to discuss the links between rational lawmaking, balancing and proportionality, and the interdependence between process review and substantive review of legislation. (shrink)

This book uses the psychological literature on rationality to weigh in on the recent debate between virtue epistemologists and epistemic situationists. It argues that both sides have misconstrued the literature and that an interactionist framework is needed to square epistemic theory with empirical facts about reasoning and inference. The explosion of empirical literature on human rationality has led to seismic shifts across a multitude of academic disciplines. This book considers its implications for epistemology. In particular, it critically evaluates the treatment (...) of the rationality literature within the recent controversy between virtue epistemologists, who attempt to ground knowledge in stable epistemic virtues, and epistemic situationists, who claim that such a project is doomed by empirical evidence of widespread irrationality. It links this foundational controversy to two of the most important debates in psychology: the Rationality Wars and the person-situation debate. The book argues that both virtue theorists and epistemic situationists have misunderstood the implications of these debates, leading them to focus exclusively on personal dispositions and situational factors as two independent sources of epistemic success, failure, and improvement. A more accurate reading of the empirical literature implies that interactions between epistemic agents and their social, informational, and institutional environments are the fundamental drivers of both rational and irrational behaviour. An interactionist framework motivated by this insight conceives of epistemic virtues and vices as both responsive to and responsible for the environments in which they're manifested and cultivated. The central aim of this book is to present and defend this novel type of virtue epistemology. Rationality in Context will be of interest to scholars and advanced students working in epistemology, philosophy of science, philosophy of psychology, cognitive psychology, and social psychology. (shrink)

Given the complexity of most phenomena, we have to delegate much epistemic work to other knowers and we must find reasons for relying on these specific knowers and not others. In our societies, these other knowers are often called experts and we rely on their epistemic authority more and more. For many complex phenomena such as climate change, genetically modified crops, and immunization, the experts that are called upon are scientific experts. For that reason, finding good reasons and justification for (...) deferring to their knowledge is of paramount societal importance. As we shall see, many have analyzed this epistemic dependence on scientific experts and have tried to show in what contexts are there good... (shrink)

There has been a movement aiming to teach agents about their privilege by making the information about their privilege as costless as possible. However, some argue that in risk-sensitive frameworks, such as Lara Buchak’s (2013), it can be rational for privileged agents to shield themselves from learning about their privilege, even if the information is costless and relevant. This threatens the efficacy of these information-access efforts in alleviating the problem of elite-group ignorance. In response, I show that even within (...) the same framework, in this case David Kinney and Liam Kofi Bright’s (2021), the rationality of this information avoidance rests on shaky ground in practice. In this framework, whether an agent should avoid information depends on the precise details of (1) how relevant they expect the information to be, (2) their priors about the value of various options, and (3) their risk attitudes. The model suggests that the rationality of elite-group ignorance is a function of structural factors that are pervasive but nonetheless not insurmountable, thus offering a way out of pessimism about elite group education. (shrink)

Sufferers of eating disorders often hold false beliefs about their own body size. Such beliefs appear to violate norms of rationality, being neither grounded by nor responsive to appropriate forms of evidence. I defend the rationality of these beliefs. I argue that they are in fact supported by appropriate evidence, emanating from proprioceptive misperception of bodily boundaries. This argument has far‐reaching implications for the explanation and treatment of eating disorders, as well as debates over the relationship between rationality and human (...) psychology. (shrink)

This book discusses how rational choice theory grew out of RAND's work for the US Air Force. It concentrates on the work of William J. Riker, Kenneth J. Arrow, James M. Buchanan, Russel Hardin, and John Rawls. It argues that within the context of the US Cold War with its intensive anti-communist and anti-collectivist sentiment, the foundations of capitalist democracy were grounded in the hyper individualist theory of non-cooperative games.

Timothy Hsiao argues that animals lack moral status because they lack the capacity for the sort of higher-level rationality required for membership in the moral community. Stijn Bruers and László Erdős have already raised a number of objections to this argument, to which Hsiao has replied with some success. But I think a stronger critique can be made. Here I raise further objections to three aspects of Hsiao's view: his conception of the moral community, his idea of root capacities grounded (...) in one's nature, and his explanation of why cruelty is wrong. I also argue that sentience is a more plausible candidate for the morally salient capacity than rationality. (shrink)

In this paper I investigate whether there are genuine and irreducible pressures of diachronic rationality grounded on the structure of the subject rather than on substantive considerations, such as pragmatic ones. I argue that structural pressures of diachronic rationality have a limited scope. The most important pressure only tells against arbitrary interference with the mechanisms for the retention of attitudes over time. I then argue that in the practical case, a substantial account in terms of the agent's temporal identity appears (...) more promising than a purely structural one, but in the end it still leaves many questions about diachronic practical rationality underdetermined. (shrink)