Current scientific research almost always requires collaboration among several (if not several hundred) specialized researchers. When scientists co-author a journal article, who deserves credit for discoveries or blame for errors? How should scientific institutions promote fruitful collaborations among scientists? In this book, leading philosophers of science address these critical questions.

In the latter half of the twentieth century, philosophers of science have argued (implicitly and explicitly) that epistemically rational individuals might compose epistemically irrational groups and that, conversely, epistemically rational groups might be composed of epistemically irrational individuals. We call the conjunction of these two claims the Independence Thesis, as they together imply that methodological prescriptions for scientific communities and those for individual scientists might be logically independent of one another. We develop a formal model of scientific inquiry, define four (...) criteria for individual and group epistemic rationality, and then prove that the four definitions diverge, in the sense that individuals will be judged rational when groups are not and vice versa. We conclude by explaining implications of the inconsistency thesis for (i) descriptive history and sociology of science and (ii) normative prescriptions for scientific communities. (shrink)

Jim Joyce argues for two amendments to probabilism. The first is the doctrine that credences are rational, or not, in virtue of their accuracy or “closeness to the truth” (1998). The second is a shift from a numerically precise model of belief to an imprecise model represented by a set of probability functions (2010). We argue that both amendments cannot be satisfied simultaneously. To do so, we employ a (slightly-generalized) impossibility theorem of Seidenfeld, Schervish, and Kadane (2012), who show that (...) there is no strictly proper scoring rule for imprecise probabilities. -/- The question then is what should give way. Joyce, who is well aware of this no-go result, thinks that a quantifiability constraint on epistemic accuracy should be relaxed to accommodate imprecision. We argue instead that another Joycean assumption — called strict immodesty— should be rejected, and we prove a representation theorem that characterizes all “mildly” immodest measures of inaccuracy. (shrink)

Modeling and computer simulations, we claim, should be considered core philosophical methods. More precisely, we will defend two theses. First, philosophers should use simulations for many of the same reasons we currently use thought experiments. In fact, simulations are superior to thought experiments in achieving some philosophical goals. Second, devising and coding computational models instill good philosophical habits of mind. Throughout the paper, we respond to the often implicit objection that computer modeling is “not philosophical.”.

We evaluate the asymptotic performance of boundedly-rational strategies in multi-armed bandit problems, where performance is measured in terms of the tendency (in the limit) to play optimal actions in either (i) isolation or (ii) networks of other learners. We show that, for many strategies commonly employed in economics, psychology, and machine learning, performance in isolation and performance in networks are essentially unrelated. Our results suggest that the appropriateness of various, common boundedly-rational strategies depends crucially upon the social context (if any) (...) in which such strategies are to be employed. (shrink)

Epistemic decision theory (EDT) employs the mathematical tools of rational choice theory to justify epistemic norms, including probabilism, conditionalization, and the Principal Principle, among others. Practitioners of EDT endorse two theses: (1) epistemic value is distinct from subjective preference, and (2) belief and epistemic value can be numerically quantified. We argue the first thesis, which we call epistemic puritanism, undermines the second.

A dynamical system is called chaotic if small changes to its initial conditions can create large changes in its behavior. By analogy, we call a dynamical system structurally chaotic if small changes to the equations describing the evolution of the system produce large changes in its behavior. Although there are many definitions of “chaos,” there are few mathematically precise candidate definitions of “structural chaos.” I propose a definition, and I explain two new theorems that show that a set of models (...) is structurally chaotic if it contains a chaotic function. I conclude by discussing the relationship between structural chaos and structural stability. (shrink)

Several current debates in the epistemology of testimony are implicitly motivated by concerns about the reliability of rules for changing one’s beliefs in light of others’ claims. Call such rules testimonial norms (tns). To date, epistemologists have neither (i) characterized those features of communities that influence the reliability of tns, nor (ii) evaluated the reliability of tns as those features vary. These are the aims of this paper. I focus on scientific communities, where the transmission of highly specialized information is (...) both ubiquitous and critically important. Employing a formal model of scientific inquiry, I argue that miscommunication and the “communicative structure” of science strongly influence the reliability of tns, where reliability is made precise in three ways. (shrink)

It is common to assume that the problem of induction arises only because of small sample sizes or unreliable data. In this paper, I argue that the piecemeal collection of data can also lead to underdetermination of theories by evidence, even if arbitrarily large amounts of completely reliable experimental and observational data are collected. Specifically, I focus on the construction of causal theories from the results of many studies (perhaps hundreds), including randomized controlled trials and observational studies, where the studies (...) focus on overlapping, but not identical, sets of variables. Two theorems reveal that, for any collection of variables V, there exist fundamentally different causal theories over V that cannot be distinguished unless all variables are simultaneously measured. Underdetermination can result from piecemeal measurement, regardless of the quantity and quality of the data. Moreover, I generalize these results to show that, a priori, it is impossible to choose a series of small (in terms of number of variables) observational studies that will be most informative with respect to the causal theory describing the variables under investigation. This final result suggests that scientific institutions may need to play a larger role in coordinating differing research programs during inquiry. (shrink)

In medicine and the social sciences, researchers must frequently integrate the findings of many observational studies, which measure overlapping collections of variables. For instance, learning how to prevent obesity requires combining studies that investigate obesity and diet with others that investigate obesity and exercise. Recently developed causal discovery algorithms provide techniques for integrating many studies, but little is known about what can be learned from such algorithms. This article argues that there are causal facts that one could learn by conducting (...) a large study but which could not be learned by combining many smaller studies. Moreover, I characterize the frequency with which combining many studies increases underdetermination and exactly how much information is lost. 1 Introduction2 Causal Inference from Observational Data3 Piecemeal Causal Inference4 The Extent and Frequency of the Problem of Piecemeal Induction5 Conclusion. (shrink)

Over the past two decades, several consistent procedures have been designed to infer causal conclusions from observational data. We prove that if the true causal network might be an arbitrary, linear Gaussian network or a discrete Bayes network, then every unambiguous causal conclusion produced by a consistent method from non-experimental data is subject to reversal as the sample size increases any finite number of times. That result, called the causal flipping theorem, extends prior results to the effect that causal discovery (...) cannot be reliable on a given sample size. We argue that since repeated flipping of causal conclusions is unavoidable in principle for consistent methods, the best possible discovery methods are consistent methods that retract their earlier conclusions no more than necessary. A series of simulations of various methods across a wide range of sample sizes illustrates concretely both the theorem and the principle of comparing methods in terms of retractions. (shrink)

Abstract:According to Quine, Charles Parsons, Mark Steiner, and others, Russell’s logicist project is important because, if successful, it would show that mathematical theorems possess desirable epistemic properties often attributed to logical theorems, such as aprioricity, necessity, and certainty. Unfortunately, Russell never attributed such importance to logicism, and such a thesis contradicts Russell’s explicitly stated views on the relationship between logic and mathematics. This raises the question: what did Russell understand to be the philosophical importance of logicism? Building on recent work (...) by Andrew Irvine and Martin Godwyn, I argue that Russell thought a systematic reduction of mathematics increases the certainty of known mathematical theorems (even basic arithmetical facts) by showing mathematical knowledge to be coherently organized. The paper outlines Russell’s theory of coherence, and discusses its relevance to logicism and the certainty attributed to mathematics. (shrink)

In medicine and the social sciences, researchers often measure only a handful of variables simultaneously. The underlying assumption behind this methodology is that combining the results of dozens of smaller studies can, in principle, yield as much information as one large study, in which dozens of variables are measured simultaneously. Mayo-Wilson :864–874, 2011, Br J Philos Sci 65:213–249, 2013. https://doi.org/10.1093/bjps/axs030) shows that assumption is false when causal theories are inferred from observational data. This paper extends Mayo-Wilson’s (...) results to cases in which experimental data is available. I prove several new theorems that show that, as the number of variables under investigation grows, experiments do not improve, in the worst-case, one’s ability to identify the true causal model if one can measure only a few variables at a time. However, stronger statistical assumptions significantly aid causal discovery in piecemeal inquiry, even if such assumptions are unhelpful when all variables can be measured simultaneously. (shrink)

What justifies the use of Bayesian statistics in science? The traditional answer is that Bayesian statistics is simply an instance of orthodox expected utility theory. Thus, Bayesian statistical methods, like principles of utility theory, are justified by norms of individual rationality. In particular, most Bayesians argue that a scientist's credences must satisfy the probability axioms if she adheres to norms of practical and epistemic rationality. We argue that, to justify Bayesian statistics as a tool for science, it is necessary that (...) a scientist's public credences obey the probability axioms. We claim that norms of collective science help justify this restricted view, termed public probabilism. (shrink)

Ockham’s razor is the principle that, all other things being equal, scientists ought to prefer simpler theories. In recent years, philosophers have argued that simpler theories make better predictions, possess theoretical virtues like explanatory power, and have other pragmatic virtues like computational tractability. However, such arguments fail to explain how and why a preference for simplicity can help one find true theories in scientific inquiry, unless one already assumes that the truth is simple. One new solution to that problem is (...) the Ockham efficiency theorem, which states that scientists who heed Ockham’s razor retract their opinions less often and sooner than do their non-Ockham competitors. The theorem neglects, however, to consider competitors following random strategies and in many applications random strategies are known to achieve better worst-case loss than deterministic strategies. In this paper, we describe two ways to extend the result to a very general class of random, empirical strategies. The first extension concerns expected retractions, retraction times, and errors and the second extension concerns retractions in chance, times of retractions in chance, and chances of errors. (shrink)

Review of the volume "Scientific Collaboration and Collective Knowledge: New Essays", edited by Thomas Boyer-Kassem, Conor Mayo-Wilson, and Michael Weisberg.

BackgroundThe Patient-Centered Outcomes Research Institute is obligated to peer review and to post publicly “Final Research Reports” of all funded projects. PCORI peer review emphasizes adherence to PCORI’s Methodology Standards and principles of ethical scientific communication. During the peer review process, reviewers and editors seek to ensure that results are presented objectively and interpreted appropriately, e.g., free of spin.MethodsTwo independent raters assessed PCORI peer review feedback sent to authors. We calculated the proportion of reports in which spin was identified during (...) peer review, and the types of spin identified. We included reports submitted by April 2018 with at least one associated journal article. The same raters then assessed whether authors addressed reviewers’ comments about spin. The raters also assessed whether spin identified during PCORI peer review was present in related journal articles.ResultsWe included 64 PCORI-funded projects. Peer reviewers or editors identified spin in 55/64 submitted research reports. Types of spin included reporting bias, inappropriate interpretation, inappropriate extrapolation of results, and inappropriate attribution of causality. Authors addressed comments about spin related to 47/55 of the reports.Of 110 associated journal articles, PCORI comments about spin were potentially applicable to 44/110 articles, of which 27/44 contained the same spin that was identified in the PCORI research report. The proportion of articles with spin was similar for articles accepted before and after PCORI peer review.DiscussionJust as spin is common in journal articles and press releases, we found that most reports submitted to PCORI included spin. While most spin was mitigated during the funder’s peer review process, we found no evidence that review of PCORI reports influenced spin in journal articles. Funders could explore interventions aimed at reducing spin in published articles of studies they support. (shrink)

BackgroundThe Transparency and Openness Promotion Guidelines describe modular standards that journals can adopt to promote open science. The TOP Factor is a metric to describe the extent to which journals have adopted the TOP Guidelines in their policies. Systematic methods and rating instruments are needed to calculate the TOP Factor. Moreover, implementation of these open science policies depends on journal procedures and practices, for which TOP provides no standards or rating instruments.MethodsWe describe a process for assessing journal policies, procedures, and (...) practices according to the TOP Guidelines. We developed this process as part of the Transparency of Research Underpinning Social Intervention Tiers Initiative to advance open science in the social intervention research ecosystem. We also provide new instruments for rating journal instructions to authors, manuscript submission systems, and published articles according to standards in the TOP Guidelines. In addition, we describe how to determine the TOP Factor score for a journal, calculate reliability of journal ratings, and assess coherence among a journal’s policies, procedures, and practices. As a demonstration of this process, we describe a protocol for studying approximately 345 influential journals that have published research used to inform evidence-based policy.DiscussionThe TRUST Process includes systematic methods and rating instruments for assessing and facilitating implementation of the TOP Guidelines by journals across disciplines. Our study of journals publishing influential social intervention research will provide a comprehensive account of whether these journals have policies, procedures, and practices that are consistent with standards for open science and thereby facilitate the publication of trustworthy findings to inform evidence-based policy. Through this demonstration, we expect to identify ways to refine the TOP Guidelines and the TOP Factor. Refinements could include: improving templates for adoption in journal instructions to authors, manuscript submission systems, and published articles; revising explanatory guidance intended to enhance the use, understanding, and dissemination of the TOP Guidelines; and clarifying the distinctions among different levels of implementation.Research materials are available on the Open Science Framework: https://osf.io/txyr3/. (shrink)

Paulo Freire : the educator, his oeuvre, and changing contexts -- Holistic interpretations of Freire's work : a critical review -- Critical literacy, praxis, and emancipatory politics -- "Remaining on the same side of the river" : neo-liberalism, party movements, and the struggle for greater coherence -- Reinventing Freire in a Southern context : the Mediterranean -- Engaging with practice : a Freirean reflection on different pedagogical sites.

Human desires for survival and things conducive to survival seem to be exactly what one would expect given natural selection. Thus, one might intuitively assume that such desires provide evidence for evolutionary naturalism. The purpose of this paper is to show that they do not: desires for survival, things conducive to survival, and other natural desires found in human beings are not an evidential asset to evolutionary naturalism. Indeed, they are severely problematic due to their intentionality and the fact that (...) they fit just as well, if not better, with theism. (shrink)

Nihilism is the logic of nothing as something, which claims that Nothing Is. Its unmaking of things, and its forming of formless things, strain the fundamental terms of existence: what it is to be, to know, to be known. But nihilism, the antithesis of God, is also like theology. Where nihilism creates nothingness, condenses it to substance, God also makes nothingness creative. Negotiating the borders of spirit and substance, theology can ask the questions of nihilism that other disciplines do not (...) ask: Where is it? What is it made of? Why is it so destructive? How can it be made holy, or overcome? Genealogy of Nihilism rereads Western history in the light of nihilistic logic, which pervades two millennia of Western thought and is coming to fruition in our present age in a virulently dangerous manner. From Parmenides to Alain Badiou, via Plotinus, Avicenna, Duns Scotus, Ockham, Descartes, Spinoza, Kant, Hegel, Heidegger, Sartre, Lacan, Deleuze and Derrida, a genealogy of nothingness can be witnessed in development, with devastating consequences for the way we live. Conor Cunningham's elaborate and sophisticated theology, spanning the disciplines of philosophy, science and popular culture, permits us to see not simply how modernity has formulated its philosophies of nothing, but how these philosophies might be transfigures by the crucial difference theology makes, and so be reconcilable with life and the living - with the very gift which being is. (shrink)

While scholarly research on the relationship between female board representation and strategic decision-making has gained momentum, employee policy outcomes have remained relatively understudied. Integrating theory from the ethics of care perspective with research on the glass ceiling and workplace voice, we seek to understand the circumstances under which female directors influence policy changes for firm employees. We argue that firms with increasing female board representation are more likely to enact human capital development policies benefiting firm employees. However, this positive relationship (...) will ultimately diminish as boards accrue an increasing number of female directors. We further predict that the presence of a female leader at the firm (serving in the role of either the CEO or the board chair) will moderate this diminishing effect. Using a sample of S&P 1500 firms, we find support for our hypotheses. The findings from this study provide evidence that while female board representation is positively related to human capital development policies, this effect is nuanced and impacted by the presence of female leadership at the top of organizations. Our paper extends existing research on the nature of female directors’ influence on ethical decisions, emphasizing the impact of these directors on employees. (shrink)

This book explores the uses of the term “paradigm” with respect to both logos and myth in Plato, with a focus on Sophist and Statesman. In so doing, Conor Barry argues for a unitary as opposed to a developmental conception of Plato's dialogues.

My argument in this paper is that Charles Taylor’s view of liberty and ethics unites Isaiah Berlin’s liberal pluralism with Elizabeth Anscombe’s virtue ethics. Berlin identifies, in “Two Concepts of Liberty,” a tradition of negative liberty advocated by figures like Locke and Mill. He maintains that this concept of liberty is unique to modernity, and it is the form of liberty best suited to the political sphere. The much older concept of positive liberty, which is found in ancient philosophers like (...) Plato and Aristotle, as well as modern thinkers like Hegel, Berlin regards as ill-suited to the political sphere. Anscombe, in “Modern Moral Philosophy,” specifically identifies and criticizes the Anglo-Saxon tradition of moral philosophy. Utilitarian thinkers like Mill are, for Anscombe, consequentialists. The virtue ethics of Aristotle gives a basis for the intrinsic goodness and badness of actions not in sentiment but reason. Charles Taylor draws upon the views of both thinkers. He advocates a liberal pluralism in a manner comparable to Berlin. However, Taylor strongly emphasizes, with Anscombe, that the most complete conception of ethical and political life must be rooted in virtue ethics and positive liberty. Thus, Taylor’s views constitute a synthesis of the approaches of his two mentors. (shrink)

Using the work of Lacan but with reference to a number of other philosophers, this article argues eight main theses: first of all, that non-Platonic philosophical construction follows after a foundational destruction; second, that philosophy generally has a nothing outside its text, one that allows for the formation of that text—for example, Kant forms the text of phenomena only by way of the noumena; third, that this transcendental nothing renders all identities ideal, however that is conceived—an example being Badiou’s notion (...) of “belonging,” one derived from the work of Georg Cantor and Paul Cohen; fourth, that a consequence of this ideality is mereological nihilism; fifth, due to this mereological nihilism any existent is only ever an aggregate, that is, an aggregate of some base element, or “stuff ”—a position that returns such philosophy to that of the ancients; sixth, this collapses idealism and materialism into each other, a collapse marked by what is referred to throughout as an impossible monism. Moreover, this impossible monism is a result of philosophy’s constant production of a bastard trinity—a dual monism, as it were. Seventh, that there are two models of difference evident in non-Platonic philosophy: the first is that of a block, with difference cut into it—like Swiss cheese, as it were—while the second is a flux which we seek to arrest with local regimes of stability. Eighth, and finally, that theology, in line with Plato, suggests the possibility of another difference, namely, a peaceable one. (shrink)

: The Centers for Disease Control and Prevention (CDC) has recommended that HIV testing be routinely offered to certain patients in hospitals with a high prevalence of HIV infection and on all pregnant women. The CDC does not, however, offer implementation level guidelines for obtaining informed consent. We provide a moral justification for requiring informed consent for HIV testing and propose guidelines for securing such consent. In particular we argue that genuine informed consent can be secured without elaborate counseling, such (...) as that currently used at Counseling and Testing Sites, provided that sufficient written notice is given to the patients before testing and that they are specifically asked for permission. (shrink)

Does our future lie in global citizenship?

According to contemporary nonpositivist theories, legal obligations are a subset of our genuine moral obligations. Debates within nonpositivism then turn on how we delimit the legal “domain” of morality. Recently, nonpositivist theories have come under criticism on two grounds. First, that they are underinclusive, because they cannot explain why paradigmatically “legal” obligations are such. Second, that they are overinclusive, because they count as “legal” certain moral obligations that are plainly nonlegal. This paper undertakes both a ground-clearing exercise for and a (...) defense of nonpositivism. It argues, in particular, that Dworkin's claims about the legal domain of morality in his later work are often mischaracterized by critics, because these critics fail to read these claims in light of his earlier theory of “Law as Integrity.” A nonpositivist theory that unifies Dworkin's earlier and later work, I argue, deals with the criticisms leveled at nonpositivist theories better than other nonpositivist competitors. (shrink)

This study examines the semantics of a root form underlying a wide range of Dene lexical expressions. The root evolved from a simple nominal denoting “club” to expressions lexicalizing the movement of stick-like objects and the rotation of helicopter blades. These semantic extensions arise through source-in-target and target-in-source metonymies. Drawing on Cognitive Linguistics, especially the theory of metonymy, offers a method of describing the range of meanings expressed by this root in a concise manner. Focusing on the results of metonymic (...) meaning extensions also opens the way to addressing questions in the history of Dene languages. This study contributes to increasing the typological scope of Cognitive Linguistic approaches and argues for the usefulness of the theory in addressing problems in Dene linguistics. (shrink)

Biobanking, the large-scale, systematic collection of data and tissue for open-ended research purposes, is on the rise, particularly in clinical research. The infrastructures for the systematic procurement, management and eventual use of human tissue and data are positioned between healthcare and research. However, the positioning of biobanking infrastructures and transfer of tissue and data between research and care is not an innocuous go-between. Instead, it involves changes in both domains and raises issues about how distinctions between research and care are (...) drawn and policed. Based on an analysis of the emergence and development of clinical biobanking in the Netherlands, this article explores how processes of bio-objectification associated with biobanking arise, redefining the ways in which distinctions between research and clinical care are governed. (shrink)

According to the fitting-attitudes account of value, for X to be good is for it to be fitting to value X. But what is it for an attitude to be fitting? A popular recent view is that it is for there to be sufficient reason for the attitude. In this paper we argue that proponents of the fitting-attitudes account should reject this view and instead take fittingness as basic. In this way they avoid the notorious ‘wrong kind of reason’ problem, (...) and can offer attractive accounts of reasons and good reasoning in terms of fittingness. (shrink)

As Catholics, like all people of goodwill, work to confront the ongoing legacy of racism in the United States, they need additional resources to understand and challenge the suprapersonal aspects of racism at the social level. Building on existing Catholic analyses of racism as a form of cultural sin and incorporating recent refinements in the concept of structural sin, this paper argues that Catholic social thought can yield a more comprehensive account of systemic racism as a structural and cultural problem. (...) This combined analysis provides the theological resources to help Catholics recognize a duty to confront racism and promote racial justice as a natural extension of their faith commitments. (shrink)

I begin with some elementary observations about assertion. In spite of recent criticisms of philosophers who have been too ready to take the subject-predicate indicative sentence as the standard form of assertion, there is no doubt that this form of sentence does represent something very fundamental about assertion. To put the matter in a rough-and-ready way: if we are to assert anything at all, it seems obvious that we must first draw our listener's attention to something that we propose to (...) talk about, and then, when we have secured his attention, go on to say something about that to which we have drawn attention. (shrink)

Feminine beauty was implicated in colonial ways of seeing Indigenous peoples. The Australian ‘Native Belle’, as the feminine type of the noble savage, caught the European imagination at the time that European women such as Mary Wollstonecraft inaugurated a critique of feminine beauty as enslaving. Representations of the native belle were disseminated through new forms of communication and were implicated in prevailing discourses of Indigenous peoples such as ethnology. The native belle demonstrates a European longing for feminine beauty that was (...) natural and unaffected. This type also demonstrates that ideas of visual identity as manifest in feminine beauty were important descriptors of racial difference. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:William of Tyre, Livy, and the Vocabulary of ClassConor KostickThe most valuable source for the history of the early crusades and the Kingdom of Jerusalem is undoubtedly William of Tyre's A History of Deeds Done Beyond The Sea. A work of great scholarship and careful detail, it is particularly important in that William was Chancellor of the Kingdom of Jerusalem from 1174 and Archbishop of Tyre from 1175 to (...) his death c. 1185 and so was closely placed to the political decision making of the period. William was also a careful and highly educated scholar; although born in Jerusalem, he spent twenty years among the leading intellectuals of France and Italy and, after pursuing an avid interest in the liberal arts, devoted himself to civil law and the teachings of the masters at Bologna.1 In this respect William is far more than a narrator of crusading history, for which he would be highly regarded; he is also an important figure in the intellectual advances of the twelfth century. A close examination of William's vocabulary of social order shows that in his work he advanced the evolution of twelfth-century social concepts and also shed some light on the social structure of the Kingdom of Jerusalem.The History was commissioned by King Amalric of Jerusalem in 1167 and took its final form after redrafting by William in 1184, and it is clear that in his work William reveals a very rich vocabulary to describe social classes (see appendix). William actually uses the term classis to mean a social category of person. Current scholarship in history, sociology, and political theory would consider it anachronistic to talk about class in the twelfth century. Indeed, the use of classis as a term for social category must have been extremely rare as even such eminent scholars of lexicographers as Charles Dufresne Du Cange and Jan Frederik Niermeyer do not note it.Insofar as medieval writers before William discussed society, they referred to ordines, the orders of society. In the early part of the eleventh century even [End Page 353] the most advanced discussion of the subject of class had not progressed beyond the work of Adalbero, Bishop of Laon, and Gerard, Bishop of Cambrai, writing c. 1025, who had articulated the famous tripartite division of society according to function—those who pray, those who fight, and those who labor.2William uses the term ordo to mean order in the theological sense and ordines to indicate social order, but equally often he uses the term classis for the same purpose. For example, in describing the character of Baldwin III, he writes that "[Baldwin] acquired so great favor to himself from the commoners and the greater people that he was more popular with both classes [classis] than his predecessors."3 After the defeat of King Louis VII at Mount Cadmus, 7 January 1148, during the Second Crusade, William describes how the women fearfully cast about during for the return of fathers, lords, husbands, and sons: "and while they did not find what they sought they spent the night kept awake by the burden of their cares... nevertheless there returned in the night some of each of these classes [classis]."4Classis also appears in the phrase secundae classis homines, a phrase used three times to indicate a category of middle-class person. In describing the distant origins of the Hospitallers he says that it was a time when "there also flocked [to Jerusalem] some of the other nations, both nobles and the second class of men."5 At the fall of Balbis (3 November 1168) King Amalric's troops, "scarcely spared the old people and children, and were not any more merciful to the second class of persons."6 For his campaign beginning December 1170 the king's formidable opponent Saladin "increased his army with commoners and the second class of people."7 It is interesting to note that in these last two examples the term is referring to Muslim society, which William must have considered as socially diverse as his own. The existence and activity of a middle class of person as subjects of his history required William to use... (shrink)