This book provides the reader with a detailed and captivating account of the story where, for the first time, physicists ventured into proposing a new force of nature beyond the four known ones - the electromagnetic, weak and strong forces, and gravitation - based entirely on the reanalysis of existing experimental data. Back in 1986, Ephraim Fischbach, Sam Aronson, Carrick Talmadge and their collaborators proposed a modification of Newton's Law of universal gravitation. Underlying this proposal were three tantalizing pieces of (...) evidence: 1) an energy dependence of the CP (particle-antiparticle and reflection symmetry) parameters, 2) differences between the measurements of G, the universal gravitational constant, in laboratories and in mineshafts, and 3) a reanalysis of the Eötvos experiment, which had previously been used to show that the gravitational mass of an object and its inertia mass were equal to approximately one part in a billion. The reanalysis revealed that, contrary to Galileo's position, the force of gravity was in fact very slightly different for different substances. The resulting Fifth Force hypothesis included this composition dependence and also added a small distance dependence to the inverse-square gravitational force. Over the next four years numerous experiments were performed to test the hypothesis. By 1990 there was overwhelming evidence that the Fifth Force, as initially proposed, did not exist. This book discusses how the Fifth Force hypothesis came to be proposed and how it went on to become a showcase of discovery, pursuit and justification in modern physics, prior to its demise. In this new and significantly expanded edition, the material from the first edition is complemented by two essays, one containing Fischbach's personal reminiscences of the proposal, and a second on the ongoing history and impact of the Fifth Force hypothesis from 1990 to the present. <. (shrink)

Let me tell you what philosophy is about, then about how Sydney does it in its own special way. Does life have a meaning, and if so what is it? What can I be certain of, and how should I act when I am not certain? Why are the established truths of my tribe better than the primitive superstitions of your tribe? Why should I do as I’m told? Those are questions it’s easy to avoid, in the rush to acquire (...) goods and prestige. Even for many of a more serious outlook, they are questions easy to dismiss with excuses like “it’s all a matter of opinion” or “let’s get on with practical matters” or “they’re too hard”. They are questions that may be ignored, but they do not go away. They’re philosophical questions. There’s a right way to approach them – you read the writings of the classical and recent philosophers and consider carefully their arguments back and forth. There are many wrong ways to approach them, such as choosing at random among the ideas your parents or friends or gurus have, or ideas that feel good. Or you can just not bother. Sydney has a certain reputation for superficiality in this regard. A character in David Williamson’s Emerald City says “No-one in Sydney ever wastes time debating the meaning of life — it’s getting yourself a water frontage”, says If you have a Writers Festival or a conference on Happiness in Sydney, you don’t normally expect philosophers to be invited. Caroline Jones’ radio series, ‘The Search for Meaning’. (shrink)

Philosophers and others have often debated whether we have freewill: i.e. whether (in a sense I shall try to elucidate) our power to choose between X and Y is radically undetermined, so that if we choose X we yet might have chosen Y, and vice versa. My concern is not with that question but with a hypothetical one which arises from it: if we had such freewill, what implications, if any, would, that fact have for the sciences. My argument concentrates (...) on the social sciences, since the phenomena with which they deal inevitably involves human choice. (shrink)

In this collection of essays, Franklin I. Gamwell offers a defense of transcendental metaphysics, especially in its neoclassical form, and builds a case for its importance as a tool for addressing abiding problems in morality and philosophical theology-including talk about God, human fault, moral decision, and the relationship of politics and religious freedom. In Part I, Gamwell argues against Kant and a wide range of contemporary philosophers, for the validity of transcendental metaphysics designated in the strict sense, i.e., as (...) an explication of the possible as such or existence as such, as the most general features or conditions all possible things have in common. He engages with Aquinas, Schleiermacher, Augustine, and Niebuhr to argue that neoclassical metaphysics, for which the divine whole is itself temporal or forever self-surpassing, provides a more coherent account of God than does classical metaphysics, for which the divine whole is completely eternal. In Part II, Gamwell looks at transcendental metaphysics designated in the broad sense, i.e., as an explication of possible subjectivity as such, as the most general features or conditions all possible subjects have in common. In particular, he takes up the moral opportunity that humans are presented with, and argues that the moral law depends on a comprehensive good, that is, a good defined metaphysically in the strict sense. He then offers an extended discussion of the relation between transcendental metaphysics (in the broad sense) and the meaning of religious freedom and explores Ronald Dworkin's view of the relationship between democracy and religion, the question of whether religious activities are properly exempted from generally applicable laws, and the constitutional debate about national and states' rights. (shrink)

Quantity is the first category that Aristotle lists after substance. It has extraordinary epistemological clarity: "2+2=4" is the model of a self-evident and universally known truth. Continuous quantities such as the ratio of circumference to diameter of a circle are as clearly known as discrete ones. The theory that mathematics was "the science of quantity" was once the leading philosophy of mathematics. The article looks at puzzles in the classification and epistemology of quantity.

This study examines the challenges of humanism and education in the 21st century as addressed by the German philosopher Peter Sloterdijk in his Elmau Speech (1999). In this lecture, titled _Rules for the Human Zoo_, Sloterdijk argues that the traditional notion of humanism, specifically “humanism as a literary society,” has reached its conclusion, necessitating the development of a new humanism appropriate for the contemporary era. However, the new concept of humanism emerging from what Sloterdijk terms the “anthropotechnic turn” appears to (...) align with the discourses surrounding human enhancement that have emerged in the 21st century, thereby influencing the realm of education. The first half of this article reports on the significant concerns and criticisms expressed by the media at that time regarding this new humanism, which seems to be associated with eugenicist ideas. Taking a step further, this study critically examines the nature of the challenges around education implied by Sloterdijk, specifically the conflict between “friend of humans and friend of Übermensch”, and explores the potential roles and responsibilities of education in the latter part of the paper. (shrink)

The three main types of policies for addressing climate change are command and control regulation, carbon taxes (or price instruments), and cap and trade (or quantity instruments). The first question in the ethics of carbon pricing is whether the latter two (price and quantity instruments) are preferable to command and control regulation. The second question is, if so, how should we evaluate the relative merits of price and quantity instruments. I canvass relevant arguments to explain different ways of addressing these (...) important policy questions, suggesting that carbon pricing is preferable to command and control regulation, and that price instruments have the theoretical edge over quantity instruments. [Open access]. (shrink)

The writers of the Huainanzi 淮南子 show that emotions are based on resonance. In this ancient Chinese text, emotional expressions are considered natural phenomena; however, at the same time, they are sometimes evaluated negatively. It states that sometimes, not only emotions stemming from desires but also emotional expressions in daily lives must be controlled. This is due to the following prescriptions stemming from the art of rulership: (1) a ruler must clearly and distinctly recognize a situation. Emotional expressions lose the (...) Quintessential Spirit (jingshen 精神), which mediates the recognition of the situation; and (2) the intention must not be revealed to the ruler’s vassals. The concept of heart (xin 心) in the Huainanzi, on the foundation called the “theory of cultivation” of Daoism, is influenced by the art of rulership from Legalism. (shrink)

It is a hallmark of a good model to make accurate a priori predictions to new conditions (Busemeyer & Wang, 2000). This study compared 8 decision learning models with respect to their generalizability. Participants performed 2 tasks (the Iowa Gambling Task and the Soochow Gambling Task), and each model made a priori predictions by estimating the parameters for each participant from 1 task and using those same parameters to predict on the other task. Three methods were used to evaluate the (...) models at the individual level of analysis. The first method used a post hoc fit criterion, the second method used a generalization criterion for short‐term predictions, and the third method again used a generalization criterion for long‐term predictions. The results suggest that the models with the prospect utility function can make generalizable predictions to new conditions, and different learning models are needed for making short‐versus long‐term predictions on simple gambling tasks. (shrink)

It is common to think that, in making choices for others, we should consider their values. But do the current interests of people with dementia ever depend on what they used to value? Or do their interests depend solely on what matters to them from now on? Two approaches are especially prominent in the philosophical literature. Some believe that the capacity to value or significantly care about things bestows a certain standing on the person’s present perspective, making it inappropriate to (...) appeal to her former values until the person no longer has this capacity. Others hold that a person’s past attitudes can never affect what is good for him now. On the “Revision Model” I defend, we should ordinarily recognize a person’s current values as authoritative in defining a person’s interests, because these represent his most up-to-date revision of his earlier views. However, if a person has lost the ability to comprehend his former values, then we cannot treat his current perspective as a genuine revision, since he is not answerable for the fact that his values have changed. Having never truly revised those former values, we should recognize their enduring relevance in defining his interests, insofar as they remain relevant to his life. This, however, is consistent with recognizing that the person’s interests may also depend on some of his current values and concerns as well. (shrink)

The current consensus is that most natural categories are not organized around strict definitions (a list of singly necessary and jointly sufficient features) but rather according to a family resemblance (FR) principle: Objects belong to the same category because they are similar to each other and dissimilar to objects in contrast categories. A number of computational models of category construction have been developed to provide an account of how and why people create FR categories (Anderson, 1990; Fisher, 1987). Surprisingly, however, (...) only a few experiments on category construction or free sorting have been run and they suggest that people do not sort examples by the FR principle. We report several new experiments and a two‐stage model for category construction. This model is contrasted with a variety of other models with respect to their ability to account for when FR sorting will and will not occur. The experiments serve to identify one basis for FR sorting and to support the two‐stage model. The distinctive property of the two‐stage model is that it assumes that people impose more structure than the examples support in the first stage and that the second stage adjusts for this difference between preferred and perceived structure. We speculate that people do not simply assimilate probabilistic structures but rather organize them in terms of discrete structures plus noise. (shrink)

Climate ethics has been concerned with polluter pays, beneficiary pays and ability to pay principles, all of which consider climate change as a single negative externality. This paper considers it as a constellation of externalities, positive and negative, with different associated demands of justice. This is important because explicitly considering positive externalities has not to our knowledge been done in the climate ethics literature. Specifically, it is argued that those who enjoy passive gains from climate change owe gains not to (...) the net losers, but to the emitters, just as the emitters owe compensation to the net losers for the negative externality. This is defended by appeal to theoretical virtues and to the social benefits of generating positive externalities, even when those positive externalities are coupled with far greater negative externalities. We call this the Polluter Pays, Then Receives ('PPTR', or 'Peter') Principle. This principle is then applied at two levels in the context of Canada. [Open access]. (shrink)

The coronavirus disease 2019 (COVID-19) crisis ought to serve as a reminder about the costs of failure to consider another long-term risk, climate change. For this reason, it is imperative to consider the merits of policies that may help to limit climate damages. This essay rebuts three common objections to carbon taxes: (1) that they do not change behaviour, (2) that they generate unfair burdens and increase inequality, and (3) that fundamental, systemic change is needed instead of carbon taxes. The (...) responses are (1) that there is both theoretical and empirical reason to think that carbon taxes do change behaviour, with larger taxes changing it to a greater extent; (2) that undistributed carbon taxes are regressive but distributing the tax receipts can alleviate that regressivity (and, in many cases, make the overall effect progressive); and (3) that while small changes for increasing democratic decision-making may be helpful, (fundamental) change takes time and the climate crisis requires urgent action. [Open access] //// -/- La crise de lamaladie à coronavirus 2019 (COVID-19) devrait servir de rappel sur les coûts de la non-prise en compte d’un autre risque à long terme, les changements climatiques. Pour cette raison, il est impératif de considérer lesmérites des politiques susceptibles de contribuer à limiter les changements climatiques. Cet essai réfute trois objections courantes aux taxes sur le carbone : (1) qu’elles ne changent pas les comportements (2) qu’elles génèrent des charges injustes et augmentent les inégalités, et (3) qu’un changement fondamental et systémique est nécessaire au lieu de taxes sur le carbone. Les réponses sont (1) qu’il existe des raisons à la fois théoriques et empiriques de penser que les taxes sur le carbone modifient effectivement les comportements, et que des taxes plus élevées les modifient dans une plus grande mesure; (2) que les taxes sur le carbone non distribuées sont régressives,mais que la distribution des recettes fiscales peut atténuer cette régressivité (et, dans de nombreux cas, rendre l’effet global progressif); et (3) que, bien que de petits changements pour l’amélioration de la prise de décision démocratique peuvent être utiles, un changement (fondamental) prend du temps et la crise climatique exige une action urgente. (shrink)

The current experiments examine mental health clinicians’ beliefs about biological, psychological, and environmental bases of the DSM‐IV‐TR mental disorders and the consequences of those causal beliefs for judging treatment effectiveness. Study 1 found a large negative correlation between clinicians’ beliefs about biological bases and environmental/psychological bases, suggesting that clinicians conceptualize mental disorders along a single continuum spanning from highly biological disorders (e.g., autistic disorder) to highly nonbiological disorders (e.g., adjustment disorders). Study 2 replicated this finding by having clinicians list what (...) they thought were the specific causes of nine familiar mental disorders and rate their bio–psycho–environmental bases. Study 3 further found that clinicians believe medication to be more effective for biologically based mental disorders and psychotherapy to be more effective for psychosocially based mental disorders. These results demonstrate that even expert mental health clinicians make strong distinctions between psychological and biological phenomena. (shrink)

This chapter introduces several distinctions relevant to what is called the “discounting problem”, since the issue is how (future) costs and benefits are discounted to make them comparable in present terms. The author defends the claim that there are good reasons to adopt Ramsey-style discounting in the context of climate change: the Ramsey rule is robust, flexible, and well-understood. An important distinction involved in discounting—“descriptivism” and “prescriptivism”—is discussed. It is argued that, even if we adopt prescriptivism, and accept that this (...) means there is need for moral experts in parameter assignments, there is a significant issue. The type of moral expertise required for the discounting problem will not involve knowledge of moral theory—thus making moral philosophy unhelpful in terms of making particular parameter assignments, despite these being substantive moral judgments. (shrink)

The consistency of a second-order version of Morley’s Theorem on the number of countable models was proved in [EHMT23] with the aid of large cardinals. We here dispense with them.

One way of conceptualizing community engaged teaching is as a mode of teaching that directly foregrounds engaging communities who are experiencing particular social realities that are theorized and discussed in classroom settings. Tracing the trajectory of community engaged teaching from the pedagogical paradigm of civil rights era Freedom Schools to contemporary manifestations of their legacy, the author offers two narrative accounts. The first is an account of the emergence of Freedom Schools as quintessential examples of community engaged teaching that exemplify (...) the character and aims of public philosophy as social praxis. The second is an illustrative account of the lessons to be drawn from the Freedom Schools by all who aspire to pursue community engaged teaching in a manner that extends their legacy. Ironically, the racist deployment of the system of education served as the impetus for what took shape as the Freedom Summer's emphasis on radical, liberation‐oriented, and mutually transformative modes of community‐engaged teaching. (shrink)

Argues that morals and politics require on a metaphysical backing and proposes a neoclassical metaphysics.

Neuroeconomics has the potential to fundamentally change the way economics is done. This article identifies the ways in which this will occur, pitfalls of this approach, and areas where progress has already been made. The value of neuroeconomics studies for social policy lies in the quality, replicability, and relevance of the research produced. While most economists will not contribute to the neuroeconomics literature, we contend that most economists should be reading these studies.

A question arising from the COVID-19 crisis is whether the merits of cases for climate policies have been affected. This article focuses on carbon pricing, in the form of either carbon taxes or emissions trading. It discusses the extent to which relative costs and benefits of introducing carbon pricing may have changed in the context of COVID-19, during both the crisis and the recovery period to follow. In several ways, the case for introducing a carbon price is stronger during the (...) COVID-19 crisis than under normal conditions. Oil costs are lower than normal, so we would expect less harm to consumers compared to normal conditions. Governments have immediate need for diversified new revenue streams in light of both decreased tax receipts and greater use of social safety nets. Finally, supply and demand shocks have led to already destabilized supply-side activities, and carbon pricing would allow this destabilization to equilibrate around greener production for the long-term. The strengthening of the case for introducing carbon pricing now is highly relevant to discussions about recovery measures, especially in the context of policy announcements from the European Union and United States House of Representatives. Key Policy Insights: • Persistently low oil prices mean that consumers will face lower pain from carbon pricing than under normal conditions. • Many consumers are more price-sensitive during the COVID-19 context, which suggests that a greater relative burden from carbon prices would fall upon producers as opposed to consumers than under normal conditions. • Carbon prices in the COVID-19 context can introduce new revenue streams, assisting with fiscal holes or with other green priorities. • Carbon pricing would contribute to a more sustainable COVID-19 recovery period, since many of the costs of revamping supply chains are already being felt while idled labor capacity can be incorporated into firms with lower carbon-intensity. (shrink)

Perspectivism in Science Perspectivism, or perspectival realism, has been discussed in philosophy for many centuries, but as a view about science, it is a twenty-first-century topic. Although it has taken many forms and even though there is no agreed definition, perspectivism at its heart uses a visual metaphor to help us understand the scope and … Continue reading Perspectivism in Science →.

This paper puts forward two claims about funding carbon capture and storage. The first claim is that there are moral justifications supporting strategic investment into CO2 storage from global and regional perspectives. One argument draws on the empirical evidence which suggests carbon capture and storage would play a significant role in a portfolio of global solutions to climate change; the other draws on Rawls' notion of legitimate expectations and Moellendorf's Anti-Poverty principle. The second claim is that where to pursue this (...) strategic investment poses a morally non-trivial problem, with considerations like near-term global distributive justice and undermining legitimate expectations favouring investing in developing regions, especially in Asia, and considerations like long-term climate impacts and best uses of resources favouring investing in the relatively wealthy regions that have the best prospects for successful storage development. [Open access]. (shrink)

Solar radiation management (SRM) may help to reduce the negative outcomes of climate change by minimising or reversing global warming. However, many express the worry that SRM may pose a moral hazard, i.e., that information about SRM may lead to a reduction in climate change mitigation efforts. In this paper, we report a large-scale preregistered, money-incentivised, online experiment with a representative US sample (N = 2284). We compare actual behaviour (donations to climate change charities and clicks on climate change petition (...) links) as well as stated preferences (support for a carbon tax and self-reported intentions to reduce emissions) between participants who receive information about SRM with two control groups (a salience control that includes information about climate change generally and a content control that includes information about a different topic). Behavioural choices are made with an earned real-money endowment, and stated preference responses are incentivised via the Bayesian Truth Serum. We fail to find a significant impact of receiving information about SRM and, based on equivalence tests, we provide evidence in favour of the absence of a meaningfully large effect. Our results thus provide evidence for the claim that there is no detectable moral hazard with respect to SRM. [Open access]. (shrink)

Parfit denies that the introduction of reasons into our ontology is costly for his theory. He puts forth two positions to help establish the claim: the Plural Senses View and the Argument from Empty Ontology. I argue that, first, the Plural Senses View for ‘exists’ can be expanded to allow for senses which undermine his ontological claims; second, the Argument from Empty Ontology can be debunked by Platonists. Furthermore, it is difficult to make statements about reasons true unless these statements (...) include reference to objects in reality. These arguments show the instability of Parfit’s claimed metaethical advantages over naturalism. [Open access]. (shrink)

The Death of the Past argues that critical problems in the philosophy of history, such as the the truth of historical texts, how texts relate to the past that they are about, and the nature of historical explanation, can be successfully investigated if we accept the claim that historical writing is historicist--perspectival (from the standpoint of the historian) rather than purporting to be like an eyewitness account (as in the first-person "presentist" views critiqued by Enzo Traverso). This approach admits all (...) relevant evidence as subject to analysis in order to determine the widest point of view, as opposed to the biased "eyewitness" approach, which observes only partially. The link between the past itself and historical knowledge is radically broken, giving the latter the wisdom of hindsight across a broader temporal field from the events examined up to the present. The truth about the past is only accessible from a later point in time; "the past" itself is not a reality for the historian; it no longer exists. Frank Ankersmit offers a surprising foundation for the historicist notion of history: Leibniz' monadological universe, in which each monad or substance has its own point of view. There is no deeper ontology to which they owe their status--just an infinity of monads and a corresponding infinity of points of view on other monads. So with historical representations, statements about the past that can be either true or false but not depictions of the past itself. In striking contrast to Hayden White's view, Ankersmit insists that historical writing is no less rational than the sciences-- mathematical and scientific writing has its counterpart in the writing of history. (shrink)

Euphemistically named “pull-ups” are a visually engaging and increasingly engineeredsanitaryproduct designed to capture a market that less than one generation ago was toilet trained at the age of the girl pictured on the packaging.

This book presents an introduction to the principles of scientific naturalism, which holds that nature is a self-sufficient reality that can be explained by natural causes and laws. Franklin explores the implications of this worldview for our understanding of the world and the place of humanity within it. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in (...) the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)