What is the purpose of perception? And how might the answer to this question help distinguish perception from other mental processes? Block’s landmark book, The.

Does the human mind resemble the machines that can behave like it? Biologically inspired machine-learning systems approach “human-level” accuracy in an astounding variety of domains, and even predict human brain activity—raising the exciting possibility that such systems represent the world like we do. However, even seemingly intelligent machines fail in strange and “unhumanlike” ways, threatening their status as models of our minds. How can we know when human–machine behavioral differences reflect deep disparities in their underlying capacities, vs. when such failures (...) are only superficial or peripheral? This article draws on a foundational insight from cognitive science—the distinction between performance and competence—to encourage “species-fair” comparisons between humans and machines. The performance/competence distinction urges us to consider whether the failure of a system to behave as ideally hypothesized, or the failure of one creature to behave like another, arises not because the system lacks the relevant knowledge or internal capacities (“competence”), but instead because of superficial constraints on demonstrating that knowledge (“performance”). I argue that this distinction has been neglected by research comparing human and machine behavior, and that it should be essential to any such comparison. Focusing on the domain of image classification, I identify three factors contributing to the species-fairness of human–machine comparisons, extracted from recent work that equates such constraints. Species-fair comparisons level the playing field between natural and artificial intelligence, so that we can separate more superficial differences from those that may be deep and enduring. (shrink)

When a circular coin is rotated in depth, is there any sense in which it comes to resemble an ellipse? While this question is at the center of a rich and divided philosophical tradition (with some scholars answering affirmatively and some negatively), Morales et al. (2020, 2021) took an empirical approach, reporting 10 experiments whose results favor such perspectival similarity. Recently, Burge and Burge (2022) offered a vigorous critique of this work, objecting to its approach and conclusions on both philosophical (...) and empirical grounds. Here, we answer these objections on both fronts. We show that Burge and Burge’s critique rests on misunderstandings of Morales et al.’s claims; of the relation between the data and conclusions; and of the philosophical context in which the work appears. Specifically, Burge and Burge attribute to us a much stronger (and stranger) view than we hold, involving the introduction of “a new entity” located “in some intermediate position(s) between the distal shape and the retinal image.” We do not hold this view. Indeed, once properly understood, most of Burge and Burge’s objections favor Morales et al.’s claims rather than oppose them. Finally, we discuss several questions that remain unanswered, and reflect on a productive path forward on these issues of foundational scientific and philosophical interest. (shrink)

Arguably the most foundational principle in perception research is that our experience of the world goes beyond the retinal image; we perceive the distal environment itself, not the proximal stimulation it causes. Shape may be the paradigm case of such “unconscious inference”: When a coin is rotated in depth, we infer the circular object it truly is, discarding the perspectival ellipse projected on our eyes. But is this really the fate of such perspectival shapes? Or does a tilted coin retain (...) an elliptical appearance even when we know it’s circular? This question has generated heated debate from Locke and Hume to the present; but whereas extant arguments rely primarily on introspection, this problem is also open to empirical test. If tilted coins bear a representational similarity to elliptical objects, then a circular coin should, when rotated, impair search for a distal ellipse. Here, nine experiments demonstrate that this is so, suggesting that perspectival shapes persist in the mind far longer than traditionally assumed. Subjects saw search arrays of three-dimensional “coins,” and simply had to locate a distally elliptical coin. Surprisingly, rotated circular coins slowed search for elliptical targets, even when subjects clearly knew the rotated coins were circular. This pattern arose with static and dynamic cues, couldn’t be explained by strategic responding or unfamiliarity, generalized across shape classes, and occurred even with sustained viewing. Finally, these effects extended beyond artificial displays to real-world objects viewed in naturalistic, full-cue conditions. We conclude that objects have a remarkably persistent dual character: their objective shape “out there,” and their perspectival shape “from here.”. (shrink)

Many actions have instrumental aims, in which we move our bodies to achieve a physical outcome in the environment. However, we also perform actions with epistemic aims, in which we move our bodies to acquire information and learn about the world. A large literature on action recognition investigates how observers represent and understand the former class of actions; but what about the latter class? Can one person tell, just by observing another person’s movements, what they are trying to learn? Here, (...) 5 experiments explore epistemic action understanding. We filmed volunteers playing a ‘physics game’ consisting of two rounds: Players shook an opaque box and attempted to determine (i) the number of objects hidden inside, or (ii) the shape of the objects inside. Then, independent subjects watched these videos and were asked to determine which videos came from which round: Who was shaking for number and who was shaking for shape? Across several variations, observers successfully determined what an actor was trying to learn, based only on their actions (i.e., how they shook the box)—even when the box’s contents were identical across rounds. These results demonstrate that humans can infer epistemic intent from physical behaviors, adding a new dimension to research on action understanding. (shrink)

Science begins with mystery. What causes lightning? How did this mold stop bacterial growth? Why do we age? Arguably, the two greatest mysteries are the cosmos and consciousness—the vast world out there and the vibrant world within. Scientists captivated by one can be called to study the other, seduced by the thought that these mysteries are connected. Science writer George Musser’s book Putting Ourselves Back in the Equation reviews their progress: Can physics unlock the mystery of consciousness? Does consciousness underlie (...) fundamental physics? (shrink)

The recent emergence of machine-manipulated media raises an important societal question: How can we know whether a video that we watch is real or fake? In two online studies with 15,016 participants, we present authentic videos and deepfakes and ask participants to identify which is which. We compare the performance of ordinary human observers with the leading computer vision deepfake detection model and find them similarly accurate, while making different kinds of mistakes. Together, participants with access to the model’s prediction (...) are more accurate than either alone, but inaccurate model predictions often decrease participants’ accuracy. To probe the relative strengths and weaknesses of humans and machines as detectors of deepfakes, we examine human and machine performance across video-level features, and we evaluate the impact of preregistered randomized interventions on deepfake detection. We find that manipulations designed to disrupt visual processing of faces hinder human participants’ performance while mostly not affecting the model’s performance, suggesting a role for specialized cognitive capacities in explaining human deepfake detection performance. -/- . (shrink)

Some things look more complex than others. For example, a crenulate and richly organized leaf may seem more complex than a plain stone. What is the nature of this experience—and why do we have it in the first place? Here, we explore how object complexity serves as an efficiently extracted visual signal that the object merits further exploration. We algorithmically generated a library of geometric shapes and determined their complexity by computing the cumulative surprisal of their internal skeletons—essentially quantifying the (...) “amount of information” within each shape—and then used this approach to ask new questions about the perception of complexity. Experiments 1–3 asked what kind of mental process extracts visual complexity: a slow, deliberate, reflective process (as when we decide that an object is expensive or popular) or a fast, effortless, and automatic process (as when we see that an object is big or blue)? We placed simple and complex objects in visual search arrays and discovered that complex objects were easier to find among simple distractors than simple objects are among complex distractors—a classic search asymmetry indicating that complexity is prioritized in visual processing. Next, we explored the function of complexity: Why do we represent object complexity in the first place? Experiments 4–5 asked subjects to study serially presented objects in a self‐paced manner (for a later memory test); subjects dwelled longer on complex objects than simple objects—even when object shape was completely task‐irrelevant—suggesting a connection between visual complexity and exploratory engagement. Finally, Experiment 6 connected these implicit measures of complexity to explicit judgments. Collectively, these findings suggest that visual complexity is extracted efficiently and automatically, and even arouses a kind of “perceptual curiosity” about objects that encourages subsequent attentional engagement. (shrink)

Seeing is not believing, contrary to what popular idioms might claim. But what exactly is the difference? This question is the focus of The Border Between Seeing and Thinking, the long-awaited monograph by philosopher Ned Block.

What is the relationship between complexity in the world and complexity in the mind? Intuitively, increasingly complex objects and events should give rise to increasingly complex mental representations (or perhaps a plateau in complexity after a certain point). However, a counterintuitive possibility with roots in information theory is an inverted U-shaped relationship between the “objective” complexity of some stimulus and the complexity of its mental representation, because excessively complex patterns might be characterized by surprisingly short computational descriptions (e.g., if they (...) are represented as having been generated “randomly”). Here, we demonstrate that this is the case, using a novel approach that takes the notion of “description” literally. Subjects saw static and dynamic visual stimuli whose objective complexity could be carefully manipulated, and they described these stimuli in their own words by giving freeform spoken descriptions of them. Across three experiments totaling over 10,000 speech clips, spoken descriptions of shapes (Experiment 1), dot-arrays (Experiment 2), and dynamic motion-paths (Experiment 3) revealed a striking quadratic relationship between the raw complexity of these stimuli and the length of their spoken descriptions. In other words, the simplest and most complex stimuli received the shortest descriptions, while those stimuli with a “medium” degree of complexity received the longest descriptions. Follow-up analyses explored the particular words used by subjects, allowing us to further explore how such stimuli were represented. We suggest that the mind engages in a kind of lossy compression for overly complex stimuli, and we discuss the utility of such freeform responses for exploring foundational questions about mental representation. (shrink)

Cognitive Science, Volume 46, Issue 10, October 2022.

Embodied approaches to cognition have touched all corners of the mind, including higher‐level judgmental processes such as social evaluation, moral reasoning and theory of mind. After further characterizing and reviewing the evidence for moderately embodied visual perception, the chapter argues that such evidence does not at all support the moderate approach to embodied cognition, even when the relevant studies and accompanying theories are taken at face value. Even if body‐related factors do influence visual perception ‐ and indeed even if spatial (...) perception is sometimes “body‐scaled” ‐ the author shows that the prevailing theories of such body‐based influences understand these effects in ways that exclude them as instances of moderately embodied cognition. The most favorable solution, then, is to accept that body‐based scaling in visual perception of which the “embodied perception” findings are intended as an example ‐ does not meet the moderate approach's criteria for embodiment. (shrink)

Quilty-Dunn et al.'s wide-ranging defense of the Language of Thought Hypothesis (LoTH) argues that vision traffics in abstract, structured representational formats. We agree: Vision, like language, is compositional – just as words compose into phrases, many visual representations contain discrete constituents that combine in systematic ways. Here, we amass evidence extending this proposal, and explore its implications for how vision interfaces with the rest of the mind.

Auditory perception is traditionally conceived as the perception of sounds — a friend’s voice, a clap of thunder, a minor chord. However, daily life also seems to present us with experiences characterized by the absence of sound — a moment of silence, a gap between thunderclaps, the hush after a musical performance. In these cases, do we positively hear silence? Or do we just fail to hear, and merely judge or infer that it is silent? This longstanding question remains controversial (...) in both the philosophy and science of perception, with prominent theories holding that sounds are the only objects of auditory experience and thus that our encounter with silence is cognitive, not perceptual. However, this debate has largely remained theoretical, without a key empirical test. Here, we introduce a novel empirical approach, presenting experimental evidence that silence can be genuinely perceived (not just cognitively inferred). We ask whether silences can ‘substitute’ for sounds in event-based auditory illusions — empirical signatures of auditory event representation in which auditory events distort perceived duration. Seven experiments introduce three new ‘silence illusions’ — the one-silence-is-more illusion, silence-based warping, and the oddball-silence illusion — each adapted from a prominent perceptual illusion previously thought to arise only from sounds. Subjects were immersed in ambient noise interrupted by silences structurally identical to the sounds in the original illusions. In all cases, silences elicited temporal distortions perfectly analogous to the illusions produced by sounds. Our results suggest that silence is truly heard, not merely inferred, introducing a general approach for studying absence perception. (shrink)

“What is the structure of thought?” is as central a question as any in cognitive science. A classic answer to this question has appealed to a Language of Thought (LoT). We point to emerging research from disparate branches of the field that supports the LoT hypothesis, but also uncovers diversity in LoTs across cognitive systems, stages of development, and species. Our letter formulates open research questions for cognitive science concerning the varieties of rules and representations that underwrite various LoT-based systems (...) and how these variations can help researchers taxonomize cognitive systems. (shrink)

When a piece of fruit is in a bowl, and the bowl is on a table, we appreciate not only the individual objects and their features, but also the relations containment and support, which abstract away from the particular objects involved. Independent representation of roles (e.g., containers vs. supporters) and “fillers” of those roles (e.g., bowls vs. cups, tables vs. chairs) is a core principle of language and higherlevel reasoning. But does such role-filler independence also arise in automatic visual processing? (...) Here, we show that it does, by exploring a surprising error that such independence can produce. In four experiments, participants saw a stream of images containing different objects arranged in forcedynamic relations — e.g., a phone contained in a basket, a marker resting on a garbage can, or a knife sitting in a cup. Participants had to respond to a single target image (e.g., a phone in a basket) within a stream of distractors presented under time constraints. Surprisingly, even though participants completed this task quickly and accurately, they false-alarmed more often to images matching the target’s relational category than to those that did not — even when those images involved completely different objects. In other words, participants searching for a phone in a basket were more likely to mistakenly respond to a knife in a cup than to a marker on a garbage can. Follow-up experiments ruled out strategic responses and also controlled for various confounding image features. We suggest that visual processing represents relations abstractly, in ways that separate roles from fillers. (shrink)

Resource rationality may explain suboptimal patterns of reasoning; but what of “anti-Bayesian” effects where the mind updates in a direction opposite the one it should? We present two phenomena — belief polarization and the size-weight illusion — that are not obviously explained by performance- or resource-based constraints, nor by the authors’ brief discussion of reference repulsion. Can resource rationality accommodate them?

A collection of exceptionally clever and funny diagrams that break down life's everyday foibles from the creator of the popular Instagram feed @instachaaz. Charles Hutton is the voice behind "Insta-Chaz." Hundreds of thousands follow his very witty takes on the highs and lows of daily life via graphs, charts, and simple illustrations on the ubiquitous yellow, rectangular Post-it note. All his observations are from the point of view of his online alter-ego, Chaz, whose most popular traits with readers (...) are his social awkwardness, vague insecurity, dislike of office Mondays, and regret for boozy Sundays. But his riffs go beyond Dilbert-esque complaints about co-workers and unfortunate alcohol consumption and accurately hit nerves and funny bones regarding a broad range of life's quotidian struggles. It's all there, from the anxiety levels of forgetting names at parties (only slightly less stressful than that of air traffic controllers) to charting the cycles of hope, despair, and willful forgetfulness while using Tinder to the infrequent occurrence of the perfect avocado. Divided into quirky meditations on Work, Home, Entertainment, Food & Drink, and Technology, the book introduces a fresh, appealing new voice that will resonate with countless others who can't help but laugh when they recognize themselves in infographic form. (shrink)

God is a problematic idea in Kant's terms, but many scholars continue to be interested in Kantian theories of religion and the issues that they raise. In these new essays, scholars both within and outside Kant studies analyse Kant's writings and his claims about natural, philosophical, and revealed theology. Topics debated include arguments for the existence of God, natural theology, redemption, divine action, miracles, revelation, and life after death. The volume includes careful examination of key Kantian texts alongside discussion of (...) their themes from both constructive and analytic perspectives. These contributions broaden the scope of the scholarship on Kant, exploring the value of doing theology in consonance or conversation with Kant. It builds bridges across divides that often separate the analytic from the continental and the philosophical from the theological. The resulting volume clarifies the significance and relevance of Kant's theology for current debates about the philosophy of God and religion. (shrink)

Beginning with the premise that there is a fundamental biological inequality in the sexes, the author presents her classic blueprint for social revolution. Reissue. 25,000 first printing.

Scholars have studied the concept of holy war in the Bible for well over a century. Both traditional Muslim and modern Western scholars have likewise studied the qur'?nic view of war, but little has been done to examine scriptural justification for holy war as a cross-cultural phenomenon. A comparison of biblical with qur'?nic war texts reveals that, despite historical, cultural, and geographical differences, scriptural justification for mass slaughter in war first appears for the purpose of defense but steadily evolves into (...) divinely encouraged and even divinely commanded offensive war. The differences in the evolving concept between the two scriptures and their exegesis can be explained by the different histories of two religious civilizations. (shrink)

Schlindwein, C., Suslin's hypothesis does not imply stationary antichains, Annals of Pure and Applied Logic 64 153–167. Shelah has shown that Suslin's hypothesis does not imply every Aronszajn tree is special. We improve this result by constructing a model of Suslin's hypothesis in which some Aronszajn tree has no antichain whose levels constitute a stationary set. The main point is a new preservation theorem, the proof of which illustrates the usefulness of certain ideas in [8, Section 1].

There are two versions of the Proper Iteration Lemma. The stronger version can be used to give simpler proofs of iteration theorems . In this paper we give another demonstration of the fecundity of the stronger version by giving a short proof of Shelah's theorem on the preservation of the ωω-bounding property.

We give a simplified treatment of revised countable support (RCS) forcing iterations, previously considered by Shelah (see [Sh, Chap. X]). In particular we prove the fundamental theorem of semi-proper forcing, which is due to Shelah: any RCS iteration of semi-proper posets is semi-proper.

In this paper, we give details of results of Shelah concerning iterated Namba forcing over a ground model of CH and iteration of P[W] where W is a stationary subset of ω 2 concentrating on points of countable cofinality.

There are two versions of the Proper Iteration Lemma. The stronger (but less well‐known) version can be used to give simpler proofs of iteration theorems (e.g., [7, Lemma 24] versus [9, Theorem IX.4.7]). In this paper we give another demonstration of the fecundity of the stronger version by giving a short proof of Shelah's theorem on the preservation of the ωω‐bounding property. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim).

We build a model in which the continuum hypothesis and Suslin's hypothesis are true, yet there is an Aronszajn tree with no stationary antichain.

We present an exposition of much of Sections VI.3 and XVIII.3 from Shelah's book Proper and Improper Forcing. This covers numerous preservation theorems for countable support iterations of proper forcing, including preservation of the property “no new random reals over V ”, the property “reals of the ground model form a non-meager set”, the property “every dense open set contains a dense open set of the ground model”, and preservation theorems related to the weak bounding property, the weak ωω -bounding (...) property, and the property “the set of reals of the ground model has positive outer measure”. (shrink)

We present an exposition of Section VI.1 and most of Section VI.2 from Shelah’s book Proper and Improper Forcing. These sections offer proofs of the preservation under countable support iteration of proper forcing of various properties, including proofs that ωω\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\omega^\omega}$$\end{document} -bounding, the Sacks property, the Laver property, and the P-point property are preserved by countable support iteration of proper forcing.

The affective sciences are essential to research regarding sustainable transition towards renewable energy. We focus on important questions that should be addressed by affective science in relation to the siting of large-scale renewable energy projects like wind and solar. Considering the recent acceleration of the transition, a more holistic understanding of negative and positive emotional responses to energy development will be essential. This is particularly important as the least controversial sites begin to dwindle in number. We break this commentary down (...) into four primary question categories for future research. These are the causal relationships between emotional elicitations and their sources, dual processing through cognitive and affective response, affect and its relationship with place, and how all of these elements change over time. (shrink)

Chris L. Firestone and Nathan Jacobs integrate and interpret the work of leading Kant scholars to come to a new and deeper understanding of Kant's difficult book, Religion within the Boundaries of Mere Reason. In this text, Kant's vocabulary and language are especially tortured and convoluted. Readers have often lost sight of the thinker's deep ties to Christianity and questioned the viability of the work as serious philosophy of religion. Firestone and Jacobs provide strong and cogent grounds for (...) taking Kant's religion seriously and defend him against the charges of incoherence. In their reading, Christian essentials are incorporated into the confines of reason, and they argue that Kant establishes a rational religious faith in accord with religious conviction as it is elaborated in his mature philosophy. For readers at all levels, this book articulates a way to ground religion and theology in a fully fledged defense of Religion which is linked to the larger corpus of Kant's philosophical enterprise. (shrink)

This book examines the transcendental dimension of Kant's philosophy as a positive resource for theology.

While earlier work has emphasized Kant’s philosophy of religion as thinly disguised morality, this timely and original reappraisal of Kant’s philosophy of religion incorporates recent scholarship. In this volume, Chris L. Firestone, Stephen R. Palmquist, and the other contributors make a strong case for more specific focus on religious topics in the Kantian corpus. Main themes include the relationship between Kant’s philosophy of religion and his philosophy as a whole, the contemporary relevance of specific issues arising out of Kant’s (...) philosophical theology, and the relationship of Kant’s philosophy to Christian theology. As a whole, this book capitalizes on contemporary movements in Kant studies by looking at Kant not as an anti-metaphysician, but as a genuine seeker of spirituality in the human experience. (shrink)

In _The Persistence of the Sacred in Modern Thought,_ Chris L. Firestone, Nathan A. Jacobs, and thirteen other contributors examine the role of God in the thought of major European philosophers from the seventeenth to the nineteenth century. The philosophers considered are, by and large, not orthodox theists; they are highly influential freethinkers, emancipated by an age no longer tethered to the authority of church and state. While acknowledging this fact, the contributors are united in arguing that this is (...) only one side of a complex story. To redress the imbalance of attention to secularism among crucial modern thinkers and to consolidate a more theologically informed view of modernity, they focus on the centrality of the sacred in the thought of these philosophers. The essays, each in its own way, argue that the major figures in modernity are theologically astute, bent not on removing God from philosophy but on putting faith and reason on a more sure footing in light of advancements in science and a perceived need to rethink the relationship between God and world. By highlighting and defending the theologically affirmative dimensions of thinkers such as Thomas Hobbes, Gottfried Leibniz, John Locke, Immanuel Kant, F. W. J. Schelling, G. W. F. Hegel, and others, the essayists present a forceful and timely correction of widely accepted interpretations of these philosophers. To ignore or downplay the theological dimensions of the philosophical works they address, they argue, distorts our understanding of modern thought. "Over the past twenty-five years there has been a gradual change in the study of modern philosophy toward recognizing the centrality of our relation to God in the work of most of the major modern thinkers of the period. _The Persistence of the Sacred in Modern Thought_ is a timely and useful collection that has the potential to crystallize this important development in the study of modern philosophy." —_John E. Hare, Yale Divinity School_. (shrink)

This paper proposes that we rename free will, also called libertarian free will, to the more accurate characterization of “predisposed agency.” This is needed for two reasons: First, classical compatibilists have redefined free will to mean something quite different than and in fact contrary to libertarian free will, and thus have introduced needless confusion into the concept. More importantly, even those who believe in libertarian free will recognize that our will is not so free in that we are predisposed toward (...) the decisions we make and the actions we take due to our genetics and our environment, which include our temperament, our character, our past experiences, our past decisions, our habits, the people we have been with, and the situations we find ourselves in, among other things. But the term “free will” totally ignores the fact that we are predisposed toward certain actions. The danger in this is that if we use the lexicon of free will, and believe in free will, then we are apt to judge others harshly for their actions since if they have free will then it would seem they bear both full responsibility and blame for their actions. But this seems unfair since each of us is predisposed to think, decide, and act as we do. The author proposes a distinction between having responsibility and deserving blame and praise. Specifically, it is argued that if we do have agency (or libertarian free will) then we are fully responsible for what we do, but due to our predispositions, which we necessarily and unavoidably have and are often largely out of our control, we frequently do not deserve full blame or praise. (shrink)

In Sartre’s 1946 article “The Humanism of Existentialism,” Sartre places existentialists into two categories, Christian or atheist, and contends that existentialism works differently for each of them. This paper argues that such a distinction should not have been made because existentialist beliefs, views, and themes do not differ based on one’s religiosity. This paper specifically examines three examples in Sartre’s article which undermine his position, and further argues that Sartre made an equivocation fallacy by conflating two different types of essence, (...) one’s innate essence and one’s character essence. The paper then explores six central existentialist themes to demonstrate that in their existentialist beliefs both the theist and the atheist agree. Those six themes are authenticity, sincerity vs. bad faith, the absurdity of life, the meaning of life, choice, and responsibility. The paper also examines the issue of moral objectivity vs. non-objectivity, and argues that not only is this not an existentialist issue, but even if it were one’s belief on moral objectivity does not cleanly correspond to one’s religious beliefs, so here again there is no basis to distinguish the Christian and the atheist. The paper concludes that any disagreement between existentialists who are Christian and those who are atheist comes down to differences in their religious beliefs, not their existentialist views. (shrink)