In conversation, we often do not acknowledge what we jointly know to be true. My aim in this paper is to identify a distinctive kind of non-acknowledgment norm, open secrecy, and analyze how such norms constrain our speech. I argue that open secrecy norms are structurally different from other everyday non-acknowledgment norms. Open secrecy norms iterate: when p is an open secret, then there’s a norm not to acknowledge that p, and this norm is itself an open secret. The non-acknowledgment (...) at issue in open secrecy norms, I argue, motivates a more complex understanding of discourse. When interlocutors are conforming to open secrecy norms, they rely on at least two disjoint common grounds, one of which has a privileged status. To understand why and how it is privileged, I develop Erving Goffman’s notion of defining a social interaction. Finally, I show how strategic speakers can exploit the structure of open secrecy in order to both communicate about the open secret and shield themselves from retaliation for what they communicate. (shrink)

Many philosophers have thought that our folk, or pre-reflective, view of persistence is one on which objects endure. This assumption not only plays a role in disputes about the nature of persistence itself, but is also put to use in several other areas of metaphysics, including debates about the nature of change and temporal passage. In this paper, we empirically test three broad claims. First, that most people (i.e. most non-philosophers) believe that, and it seems to them as though, objects (...) persist by enduring rather than perduring. Second, that most people have a view of change on which enduring but not perduring objects count as changing. Third, that one reason why the folk represent time as dynamical is because it seems to them, and they believe that, they endure through time. We found no evidence to support these claims. While there are certainly plenty of ‘folk’ endurantists in the population we tested, there are also plenty of ‘folk’ perdurantists. We did not find robust evidence that a majority of people believed that, or it seemed to them as though, objects endure rather than perdure. We conclude that many arguments in favour of endurantism that appeal to folk beliefs about, or experiences of, persisting objects and change rest on views about those beliefs and experiences that are empirically unsupported. There is no evidence to suggest that endurantism is the folk friendly view of persistence, and so we should stop treating it as such without argument. (shrink)

Inquiry aims at knowledge. Your inquiry into a question succeeds just in case you come to know the answer. However, combined with a common picture on which misleading evidence can lead knowledge to be lost, this view threatens to recommend a novel form of dogmatism. At least in some cases, individuals who know the answer to a question appear required to avoid evidence bearing on it. In this paper, we’ll aim to do two things. First, we’ll present an argument for (...) this novel form of dogmatism and show that it presents a substantive challenge. Second, we’ll consider a way those who take knowledge to be the aim of inquiry can mount a response. In the course of doing so, we’ll try to get clearer on the normative connections between inquiry, knowledge and evidence gathering. (shrink)

Artificial intelligence (AI) and machine learning (ML) are becoming increasingly significant areas of research for scholars in science and technology studies (STS) and media studies. In March 2020, Waymo, Google/Alphabet’s autonomous vehicle project, introduced the ‘Open Dataset Virtual Challenge’, an annual competition leveraging their Waymo Open Dataset. This freely accessible dataset comprises annotated autonomous vehicle data from their own Waymo vehicles. Yearly, Waymo has continued to host iterations of this challenge, inviting teams of computer scientists to tackle evolving machine learning (...) and vision problems using Google's data and tools. This article analyses these challenges, situating them within the context of the ‘Grand Challenges’ of artificial intelligence (AI), which aimed to foster accountable and commercially viable advancements in the late 1980s. Through two exploratory workshops, we adopted a ‘technographic’ approach to examine the pivotal role of challenges in the development and political economy of AI. Serving as an organising principle for the AI innovation ecosystem, the challenge connects companies and external collaborators, driving advancements in specific machine vision domains. By exploring six key themes—interface methods, incrementalism, metrics, AI vernacular, applied domains, and competitive advantages—the article illustrates the role of these challenges in shaping AI research and development. By unpacking the dynamic interaction between data, computation, and labour, these challenges serve as catalysts propelling advancements towards self-driving technologies. The study reveals how challenges have historically and presently shaped the evolving landscape of self-driving and AI technologies. (shrink)

This paper introduces a novel theory of vagueness. Its main aim is to show how naïve judgments about tolerance and indeterminacy can be preserved while departing from classical logic only in ways which are independently motivated. -/- The theory makes use of a bilateral approach to acceptance and rejection. Combined with a standard account of validity, this approach gives rise to an entailment relation which is non-transitive. I argue that this is desirable: it is both pre-theoretically plausible and provides a (...) compelling solution to a number of longstanding puzzles. The theory aims to preserve the naïve picture of vagueness. It combines tools from expressivist and dynamic treatments of information in conversation to show how principles which are generally assumed to be in tension are compatible. The resulting logic departs from classical logic in precisely those places we should expect it to. -/- . (shrink)

Number Nativism is the view that humans innately represent precise natural numbers. Despite a long and venerable history, it is often considered hopelessly out of touch with the empirical record. I argue that this is a mistake. After clarifying Number Nativism and distancing it from related conjectures, I distinguish three arguments which have been seen to refute the view. I argue that, while popular, two of these arguments miss the mark, and fail to place pressure on Number Nativism. Meanwhile, a (...) third argument is best construed as a challenge: rather than refuting Number Nativism, it challenges its proponents to provide positive evidence for their thesis and show that this can be squared with apparent counterevidence. In response, I introduce psycholinguistic work on The Tolerance Principle (not yet considered in this context), propose that it is hard to make sense of without positing precise and innate representations of natural numbers, and argue that there is no obvious reason why these innate representations couldn’t serve as a basis for mature numeric conception. (shrink)

The modality of normality distinguishes states of affairs which are normal from those which are abnormal. Existing work on the modality of normality assumes that it is a restriction of metaphysical modality. In this paper, we argue that this assumption is inappropriate and explore the consequences of abandoning it. -/- After preliminary discussion (§1), we introduce the dominant framework for reasoning about normality (§2) and argue that it ascribes implausibly strong structural properties to the modality. In its place, we propose (...) a new framework, which avoids this commitment (§§3-5). This account has a number of interesting features, which we explore in both an informal and formal setting. If correct, it implies that the modality of normality occupies a distinctive place in the space of modalities. Before concluding, we consider some of the wider implications of our account (§6), focusing on the role normality has played in epistemic theorizing. (shrink)

Many prominent critiques of philosophical methods proceed by suggesting that some method is unreliable, especially in comparison to some alternative method. In light of this, it may seem natural to conclude that these (comparatively) unreliable methods should be abandoned. Drawing upon work on the division of cognitive labour in science, we argue things are not so straightforward. Rather, whether an unreliable method should be abandoned depends heavily on the crucial question of how we should divide philosophers’ time and effort between (...) different methods, in order to maximise our prospects of achieving epistemic success. We show that, in a range of cases, even a (comparatively) unreliable method deserves to be allocated some of these resources. (shrink)

This paper develops an analysis of non-epistemic deniability. On my analysis, a speaker has non-epistemic deniability for G-ing when non-acknowledgment social norms make it impermissible for others to retaliate against the speaker for G-ing. I identify two kinds of non-acknowledgment norms that generate non-epistemic deniability: two-tracking norms, which function to contain conflict within a group, and open secrecy norms, which function to inhibit the group from acting on shared knowledge. Narrowly, this paper builds on Alexander Dinges and Julia Zakkou’s recent (...) landmark analysis of deniability. Dinges and Zakkou argue that non-epistemic deniability does not exist. I disagree. But I also use their account of epistemic deniability in order to motivate my own analysis of non-epistemic deniability. Broadly, my paper provides a case study in how speakers strategically leverage non-acknowledgment norms in order to protect their own interests at the expense of others’. (shrink)

Inquiry aims at knowledge. Your inquiry into a question succeeds just in case you come to know the answer. However, combined with a common picture on which misleading evidence can lead knowledge to be lost, this view threatens to recommend a novel form of dogmatism. At least in some cases, individuals who know the answer to a question appear required to avoid evidence bearing on it. In this paper, we’ll aim to do two things. First, we’ll present an argument for (...) this novel form of dogmatism and show that it presents a substantive challenge. Second, we’ll consider a way those who take knowledge to be the aim of inquiry can mount a response. In the course of doing so, we’ll try to get clearer on the normative connections between inquiry, knowledge and evidence gathering. (shrink)

We know a lot about what the world is like. We know less, it seems, about what we know about what the world is like. According to a common thought, it is easier for us to come to know about the state of the world than to come to know about the state of our own knowledge. What explains this gap? An attractively simple hypothesis is that our ignorance about what we know is explained by our ignorance about the world. (...) There are things we fail to know about what we know about the world because there are things we fail to know about the world. This hypothesis is often motivated by the idea that knowledge requires a margin‐for‐error. In this paper, I'll argue that this simple hypothesis is inadequate. Not all our ignorance of our knowledge can be explained by our ignorance about the world. In this sense, at least some of our ignorance about what we know is brute. (shrink)

As central as the method of forcing is within set theory, it has yet to be incorporated into the philosopher's toolbox. That strikes me as a shame, since it may well have important applications within philosophy. One barrier is that typical presentations of forcing are overly dry and technical and make it seem inherently bound up with its applications within set theory. The purpose of this note is to try to rectify this. In particular, I will explain how the method (...) of forcing can be seen as a way of constructing a certain kind of intensional model that philosophers are already interested in: namely, possibility models. (shrink)

Visual illusions of number provide a means of investigating the rules and principles through which approximate number representations are formed. Here, we investigated the developmental trajectory of an important numerical illusion – the connectedness illusion, wherein connecting pairs of items with thin lines reduces their perceived number without altering continuous attributes of the collections. We found that children as young as 5 years of age are affected by the illusion and that the magnitude of the effect increased into adulthood. Moreover, (...) individuals with greater numerical acuity exhibited stronger connectedness illusions after controlling for age. Overall, these results suggest the approximate number system expects to enumerate over bounded wholes and doing so is a signature of its optimal functioning. (shrink)

Cambodia's higher education institutions (HEIs) face a number of challenges. Academics require increased access to resources and funding, as well as restrictions on academic freedom and significant language and cultural barriers. The purpose of this chapter is to identify and analyze the individual factors influencing academicians' research productivity in Cambodian higher education institutions, to examine and evaluate the impact of institutional factors on research productivity, to investigate and assess the external factors affecting research productivity, and to develop strategies to mitigate (...) negative impacts while increasing positive influences. This study employs a qualitative approach, with insights gained through interviews and policy analysis. This comprehensive approach provides a thorough understanding of Cambodia's current academic research landscape, highlighting areas that require policy-driven solutions. The findings emphasize the critical need for policies that are tailored to the Cambodian academic context. There is a clear need to foster stronger domestic and international research collaborations as well as mechanisms that encourage long-term research development. The study proposes a set of focused policy recommendations designed to overcome these challenges and enhance the research productivity of Cambodian HEIs. These policies, if implemented, have the potential to significantly improve the research landscape in Cambodian HEIs, fostering a sense of hope and optimism among the academic community. (shrink)

A fragmented and unfirnished exploration into the realist and anti-realist debate in mathematics. And the subsequent exploration of how novelty and creation works on a fundemental epistemic scale. The paper puts forth two major frameworks that attempt to bridge realism and anti-realism and provides a novel solution to the epistemic problem of true novelty and idea generation.

I introduce an argument for Platonism based on intra-mathematical explanation: the explanation of one mathematical fact by another. The argument is important for two reasons. First, if the argument succeeds then it provides a basis for Platonism that does not proceed via standard indispensability considerations. Second, if the argument fails it can only do so for one of three reasons: either because there are no intra-mathematical explanations, or because not all explanations are backed by dependence relations, or because some form (...) of noneism-the view according to which non-existent entities possess properties and stand in relations-is true. The argument thus forces a choice between nominalism without noneism, intra-mathematical explanation and a backing conception of explanation. You can have any two, but not all three. (shrink)

According to dialetheism, there are some true contradictions. According to the A-theory, the passage of time is a mind-independent feature of reality. On some A-theories, the passage of time involves the movement of the present. I show that by appealing to dialetheism one can explain why the present moves. I then argue that A-theorists should adopt this explanation. To do this, I defend two claims. First, that the dialetheic explanation is an improvement on the only other explanation available for why (...) the present moves and, second, that adopting the explanation is better than leaving the motion of the present unexplained. Assuming that A- theorists should adopt the best available version of their view, it follows that they should adopt a dialetheic explanation of why time passes. (shrink)

Philosophical accounts denying that temporal passage is an objective feature of reality face an explanatory challenge with respect to why it appears to us as though time passes. Recently, two solutions have surfaced. Cognitive illusionism claims that people experience the passage of time due to their belief that time passes. Cognitive error theory claims that we do not experience the passage of time, but hold the belief that we do, which we have acquired through making an inference from the prior (...) belief that time passes. These approaches suppose that belief and passage experience are explanatorily connected, and they depend on the claims that people who experience the passage of time or at least believe that they do also believe that time passes. To test these claims, we probed the beliefs of populations of individuals with depression and schizotypy, thus conditions that are strongly associated with alterations in temporal phenomenology. Depression was assessed with the Beck Depression Inventory (BDI) and schizotypy with the short Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE). While cognitive illusionism and inferentialist cognitive error theory would predict a strong association between BDI and O-LIFE scores and beliefs about time passage, our study found no such association. The experience of passage does not seem to be explanatorily connected to beliefs about the passage of time. (shrink)

We study the logical and computational properties of basic theorems of uncountable mathematics, in particular Pincherle's theorem, published in 1882. This theorem states that a locally bounded function is bounded on certain domains, i.e. one of the first ‘local-to-global’ principles. It is well-known that such principles in analysis are intimately connected to (open-cover) compactness, but we nonetheless exhibit fundamental differences between compactness and Pincherle's theorem. For instance, the main question of Reverse Mathematics, namely which set existence axioms are necessary to (...) prove Pincherle's theorem, does not have an unique or unambiguous answer, in contrast to compactness. We establish similar differences for the computational properties of compactness and Pincherle's theorem. We establish the same differences for other local-to-global principles, even going back to Weierstrass. We also greatly sharpen the known computational power of compactness, for the most shared with Pincherle's theorem however. Finally, countable choice plays an important role in the previous, we therefore study this axiom together with the intimately related Lindelöf lemma. (shrink)

There has been a surge of interest in explainable artificial intelligence (XAI). It is commonly claimed that explainability is necessary for trust in AI, and that this is why we need it. In this paper, I argue that for some notions of trust it is plausible that explainability is indeed a necessary condition. But that these kinds of trust are not appropriate for AI. For notions of trust that are appropriate for AI, explainability is not a necessary condition. I thus (...) conclude that explainability is not necessary for trust in AI that matters. (shrink)

I argue that analogue mental representations possess a canonical decomposition into privileged constituents from which they compose. I motivate this suggestion, and rebut arguments to the contrary, through reflection on the approximate number system, whose representations are widely expected to have an analogue format. I then argue that arguments for the compositionality and constituent structure of these analogue representations generalize to other analogue mental representations posited in the human mind, such as those in early vision and visual imagery.

The apparent downsides of opaque algorithms has led to a demand for explainable AI (XAI) methods by which a user might come to understand why an algorithm produced the particular output it did, given its inputs. Patients, for example, might find that the lack of explanation of the process underlying the algorithmic recommendations for diagnosis and treatment hinders their ability to provide informed consent. This paper examines the impact of two factors on user perceptions of explanations for AI systems in (...) medical contexts. The factors considered were the stakes of the decision—high versus low—and the decision source—human versus AI. 484 participants were presented with vignettes in which medical diagnosis and treatment plan recommendations were made by humans or by AI. Separate vignettes were used for high stakes scenarios involving life-threatening diseases, and low stakes scenarios involving mild diseases. In each vignette, an explanation for the decision was given. Four explanation types were tested across separate vignettes: no explanation, counterfactual, causal and a novel ‘narrative-based’ explanation, not previously considered. This yielded a total of 16 conditions, of which each participant saw only one. Individuals were asked to evaluate the explanations they received based on helpfulness, understanding, consent, reliability, trust, interests and likelihood of undergoing treatment. We observed a main effect for stakes on all factors and a main effect for decision source on all factors except for helpfulness and likelihood to undergo treatment. While we observed effects for explanation on helpfulness, understanding, consent, reliability, trust and interests, we by and large did not see any differences between the effects of explanation types. This suggests that the effectiveness of explanations may not depend on type of explanation but instead, on the stakes and decision source. (shrink)

We examine the reverse mathematics and computability theory of a form of Ramsey's theorem in which the linear n-tuples of a binary tree are colored.

How could physicalism be true of a world in which there are no fundamental physical phenomena? A familiar answer, due to Barbara Gail Montero and others, is that physicalism could be true of such a world if that world does not contain an infinite descent of mentality. Christopher Devlin Brown has produced a counterexample to that solution. We show how to modify the solution to accommodate Brown’s example: physicalism could be true of a world without fundamental physical phenomena if that (...) world does not contain an infinite descent of mentally constituted mentality. This solution is independently plausible and is available to physicalists of virtually all significant varieties. (shrink)

Hume notoriously pursues a constructive science of human nature in the Treatise while raising serious skeptical doubts about that project and leaving them apparently unanswered. On the perspectivalist reading, Hume endorses multiple incommensurable epistemic perspectives in the Treatise. This reading faces two significant objections: that it renders Hume’s epistemology inconsistent (or at least highly incoherent) and that it is ad hoc. In this paper, I propose a perspectivalist account of epistemic justification in the Treatise that addresses, to a significant degree, (...) these concerns. Hume has available to him an account – what I will call epistemic dispositionalism – that is internally consistent, allows for epistemic continuity between perspectives, and is thoroughly grounded in his naturalism. (shrink)

Emotions are open to various kinds of normative assessment. For example, we can assess emotions for their prudential or moral value. Recently, philosophers have increasingly attended to a distinct form of normative assessment of emotions – fittingness assessment. An emotion is fitting when it is merited by its object. For example, admiration is fitting when it is felt towards the admirable, and shame towards the shameful. This paper defends a hybrid account of emotional fittingness. Emotions are complex, and typically involve (...) various elements. As well as involving representations that can be assessed for accuracy, emotions typically motivate their subjects in characteristically urgent ways. The fittingness of an emotion as a whole is a function of the fittingness of both its representational and motivational aspects. (shrink)

Philosophy &Public Affairs, Volume 51, Issue 4, Page 413-449, Fall 2023.

This paper examines the relationship between North American beef consumption and deforestation in South and Central America. Some writers have argued that consumption of hamburgers in North America, particularly hamburgers consumed in fast food restaurants, contributes to the depletion of the rainforest in South and Central America. We survey the published policy literature on the causes of rainforest depletion in the region. We also review the published estimates of the rate and extent of clearing of rainforest that has occurred in (...) South and Central America since 1970. Finally, we review the data on beef imports and consumption in Canada and the United States in a effort to assess the importance of South and Central America as suppliers of beef to the North American market. We conclude that the relationship between beef consumption in North America should not be considered an important cause of forest depletion in South and Central America. Domestic policies and market forces in the countries where rainforests are located are the leading causes of rainforest depletion in this region. This lesson seems to have been lost on some popular and even some textbook writers on this subject. (shrink)

Cette étude vise à explorer la possibilité d'une pédagogie alternative non fondée sur la subjectivité moderne, basée sur la théorie du deuil de Judith Butler. Le sujet méritocratique favorisé par l'éducation d'aujourd'hui ne peut pas répondre par le deuil à la mort des autres, qui réveille la précarité et la douleur de la vie, pour maintenir un optimisme face à soi et à l'avenir. Selon Judith Butler, les sujets qui pleurent la mort des autres, contrairement aux sujets modernes autonomes, sont (...) des sujets vulnérables et hétéronomes qui émergent de telle sorte que la frontière exclusive avec les autres est brisée, et le deuil qu'ils accomplissent est une cohabitation d'autres vulnérables. Il sert de base à la recherche. Sur cette base, une pédagogie alternative est proposée. La pédagogie du deuil (1) est basée sur la vulnérabilité plutôt que sur l'autonomie ou l'indépendance du sujet, (2) utilise la critique comme outil pour découvrir des vies qui ne peuvent pas être pleurées et crée une politique commune qui les englobe. (3) Le deuil de la mort d'autrui est constamment tenté sur la base de l'éthique de l'échec qui ne peut jamais être achevé. La pédagogie du deuil est une éducation qui restaure les sujets effondrés et épuisés de la société moderne, une éducation qui ravive la valeur des émotions aliénées telles que la tristesse, la douleur et la peur, et qui fait finalement partie de l'éducation démocratique qui cherche à « vivre ensemble ». (shrink)

This book presents a new approach to studying the syntax of human language, one which emphasizes how we think about time. Tilsen argues that many current theories are unsatisfactory because those theories conceptualize syntactic patterns with spatially arranged structures of objects. These object-structures are atemporal and do not lend well to reasoning about time. The book develops an alternative conceptual model in which oscillatory systems of various types interact with each other through coupling forces, and in which the relative energies (...) of those systems are organized in particular ways. Tilsen emphasizes that the two primary mechanisms of the approach - oscillators and energy levels - require alternative ways of thinking about time. Furthermore, his theory leads to a new way of thinking about grammaticality and the recursive nature of language. The theory is applied to a variety of syntactic phenomena: word order, phrase structure, morphosyntax, constituency, case systems, ellipsis, anaphora, and islands. The book also presents a general program for the study of language in which the construction of linguistic theories is itself an object of theoretical analysis. (shrink)

This article analyzes the relationship between the structure of federal Title IX investigations and the existing evidence addressing the emotional and mental health needs of sexual harassment and sexual assault victims. The article argues that federal requirements for investigating sexual harassment should be restructured so as to address the challenges stigma poses for the realization of Title IX's objectives.

Philosophers of science have recently called for experts-by-experience to be involved in revising psychiatric diagnoses. They argue that experts-by-experience can have relevant knowledge which is important for considering potential modifications to psychiatric diagnoses. I show how altering one diagnosis can impact individuals with a different diagnosis. For example, altering autism can impact individuals diagnosed with Attention Deficit Hyperactivity Disorder and Schizoid Personality Disorder through co-morbidity and differential diagnostic criteria. Altering autism can impact the population making up the diagnosis of Attention (...) Deficit Hyperactivity Disorder and Schizoid Personality Disorder which can then influence which behaviour each diagnosis covers and which parts of the causal structure each diagnosis covers. Expanding one diagnosis can mean, if differential diagnostic criteria are present, that individuals who have a different diagnosis, or would one day have been diagnosed with that different diagnosis, are instead now diagnosed with the expanded diagnosis. Alternatively, if two diagnoses can be co-morbid then expanding one diagnosis can mean individuals who have a different diagnosis can now also receive the expanded diagnosis. Changing these can then impact the adequacy of symptoms formulated to cover behaviour and causal mechanisms formulated to cover the causal structure. This means experts-by-experience representing a range of diagnoses should be involved in decisions over modifying diagnoses they do not have. For example, Attention Deficit Hyperactivity Disorder individuals should be involved in decisions to modify autism. I discuss practical issues relating to how much say people with a range of diagnoses should have in relation to modifying a diagnosis which they do not have. We should employ a principle of equality whereby the level of say individuals with one diagnosis should have on another diagnosis should be equally reciprocated. (shrink)

Ancient Confucianism and Daoism are distinct streams of thought, their differences stark at times. But they emerge from and flow through a shared cultural context and historical time. Certain common assumptions are to be found in each, and distinguish both from Western ways of thinking. This chapter considers the particulars of these two ancient Chinese perspectives, and the ways in which they differ from one another. The three key concepts of Confucianism include: humanity, duty, ritual. The Confucian worldview includes many (...) ideas and principles but these offer a starting point. The chapter recognizes Daoism's playful ambiguity and discusses the three concepts: Way (Dao), integrity (de), and non‐action (wuwei). (shrink)

Facing challenges in your relationships, career, health or well-being? Worried important life goals seem to be slipping away? Whether you're faced with day-to-day irritations or facing a larger setback, sometimes life can test your strength and endurance. But there is a simple and effective way to building your resilience in the face of adversity, making sure that you can bounce back from them stronger than ever before and go on to achieve your goals and lead a happier, more fulfilled life. (...) This step-by-step guide takes you through how to build your everyday resilience. From powerful lessons on the effects of our thoughts, emotions, relationships and self-care, to tips on setting goals that genuinely motivate and turning challenges on their heads, it makes the road to success and happiness easy and - best of all - enjoyable. (shrink)

I provide an opinionated discussion of two recent volumes on the structure, ethics, and politics of bad conversations. In Just Words (2019), Mary Kate McGowan argues that despite our best intentions, we sometimes inadvertently bring oppressive norms to bear on our interactions. In Grandstanding (2020), Justin Tosi and Brandon Warmke argue that the human desire to cut a good moral figure before others systematically distorts moral discourse. Though their authors have different political outlooks, both books converge on a similar theme: (...) conversational bad behavior isn’t always just morally obnoxious. It can be silencing. (shrink)