Eugen Fischer

Longstanding philosophical debates about the nature of perception revolve around a clash between Direct Realist and Indirect Realist conceptions of vision. These deny and affirm, respectively, that vision involves awareness of mental images which represent the physical objects of sight. The assumption that ‘the’ common-sense conception of vision is Direct Realist shapes these debates. Against this key assumption, recent studies in experimental philosophy have provided first evidence that laypeople are, collectively and often individually, torn between Direct Realist and Indirect Realist conceptions, and regard both as naïve. These findings raise a general methodological issue: Does agreement with two such patently incompatible conceptions reflect genuine beliefs? This paper crucially extends first findings, examines whether agreement ratings are indicative of beliefs, and offers an explanation of how the conflicting beliefs involved could be acquired and maintained. Three studies develop and validate the new Direct/Indirect Realist Belief Inventory (DIRBI) which uses agreement ratings with verbal and pictorial stimuli to assess the prevalence of the two conflicting conceptions among laypeople. Findings confirm that laypeople hold relevant beliefs and are, collectively and individually, torn between the two conceptions. We suggest these beliefs are ultimately anchored in ubiquitous implicit knowledge structures, namely, experiential event knowledge about vision and an implicit model of endogenous attention. We conclude that there is no such thing as ‘the’ common-sense conception of vision that could enjoy the epistemic default status accorded to common sense in many philosophical debates.

Philosophical debates about the nature of perception are standardly informed by an empirical assumption about folk beliefs: They assume there is such a thing as “the” common‐sense conception of vision, and that this conception is captured by Direct Realism. This naïve theory is thought to compete with scientifically informed Indirect Realism. This paper discusses how to render these claims empirically tractable and reports a scientific accuracy rating study whose findings suggest instead that both Direct Realism and Indirect Realism capture prescientific conceptions. We discuss two philosophical consequences: “Common sense” is too conflicted about vision to deserve epistemic default status in philosophical debates about perception, and the “problem of perception” needs to be reconceptualized as arising not from a challenge to our ordinary understanding of vision, but from a patent conflict within this understanding. Together, these two upshots facilitate a fresh approach to the problem which can usefully be transferred to further “aporetic” problems that arise from conflicts between beliefs to which we are pretheoretically attracted.

This paper empirically raises and examines the question of ‘conceptual control’: To what extent are competent thinkers able to reason properly with new senses of words? This question is crucial for conceptual engineering. This prominently discussed philosophical project seeks to improve our representational devices to help us reason better. It frequently involves giving new senses to familiar words, through normative explanations. Such efforts enhance, rather than reduce, our ability to reason properly, only if competent language users are able to abide by the relevant explanations, in language comprehension and verbal reasoning. This paper examines to what extent we have such ‘conceptual control’ in reasoning with new senses. The paper draws on psycholinguistic findings about polysemy processing to render this question empirically tractable and builds on recent findings from experimental philosophy to address it. The paper identifies a philosophically important gap in thinkers’ control over the key process of stereotypical enrichment and discusses how conceptual engineers can use empirical methods to work around this gap in conceptual control. The paper thus empirically demonstrates the urgency of the question of conceptual control and explains how experimental philosophy can empirically address the question, to render conceptual engineering feasible as an ameliorative enterprise.

It is no surprise that empirical psychology refutes, again and again, assumptions of uneducated common sense. But some puzzlement tends to arise when scientific results appear to call into question the very conceptual framework of the mental to which we have become accustomed. This paper shall examine a case in point: Experiments on colour‐discrimination have recently been taken to refute an assumption of first‐person authority that appears to be constitutive of our ordinary notion of perceptual experience. The paper is to show that those experiments do not refute this assumption, and will suggest that the impression to the contrary is, ultimately, due to two factors: to misleading imagery and, above all, to mistaken translation from the technical idiom of empirical psychology into the plain English we use every day. This is to take the mystery out of what we shall see to constitute a pretty puzzle; it is to remind us just how careful we need to be when drawing conclusions from results of scientific psychology; and it is to bring out the virtues of methods commonly lumped together under the entirely misleading label of ‘ordinary language philosophy’, of methods far more useful than their common caricature would make one think.

In this article, I develop the so‐called ‘problem of linguistic creativity’ for two object‐languages, one finite, the other infinite. I then employ an approach first outlined by Ludwig Wittgenstein’s collaborator Friedrich Waismann, to ‘dissolve’ that problem, in a sense made precise by working through the example. This is to unsettle the computational picture of linguistic understanding as turning on the generation of semantic information about sentences on the basis of semantic information about their constituent parts, and to provide a reasonably clear conception of to what such ‘philosophical dissolution’ of a problem amounts.

This graduate textbook provides a basic introduction to experimental philosophy (x-phi). In nine chapters, different methods and tools used in X-Phi are explained, spanning quantitative vignette studies, interactive experiments, corpus analysis, psycholinguistic experiments as well as qualitative interview studies. Each chapter introduces a specific experimental method by means of a case study in an easily accessible way and covers the whole research process from the development of a research question to the interpretation of the data.

The later Wittgenstein is notoriously hard to understand. His novel philosophical approach is the key to understanding his perplexing work. This volume assembles leading Wittgenstein scholars to come to grips with its least well understood aspect: the unfamiliar aims and method that shape Wittgenstein's approach. _Wittgenstein at Work _investigates Wittgenstein's aims, rationale and method in two steps. The first seven chapters analyze how he proceeds in core parts of the _Philosophical Investigations_: the discussion of the Augustinian picture of language, ostensive definition, philosophical method, understanding, rule-following, and private language. The final five chapters examine his most striking methodological remarks: his repudiation of theory and non-trivial theses, and some core notions of his methodology: his notions of clarification, synoptic representation, nonsense, and philosophical pictures. The volume considerably advances discussion of the therapeutic aspects of his approach that are currently a focus of debate. This volume is an indispensable methodological companion to the _Philosophical Investigations_, useful to both specialists and students alike.

_Philosophical Delusion and its Therapy_ provides new foundations and methods for the revolutionary project of philosophical therapy pioneered by Ludwig Wittgenstein. The book vindicates this currently much-discussed project by reconstructing the genesis of important philosophical problems: With the help of concepts adapted from cognitive linguistics and cognitive psychology, the book analyses how philosophical reflection is shaped by pictures and metaphors we are not aware of employing and are prone to misapply. Through innovative case-studies on the genesis of classical problems about the mind and perception, and on thinkers including Locke, Berkeley and Ayer, the book demonstrates how such autonomous habits of thought systematically generate unsound intuitions and philosophical delusions, whose clash with reality, or among each other, gives rise to ill-motivated but maddening problems. The book re-examines models of therapeutic philosophy, due to Wittgenstein and J. L. Austin, and develops an approach that may let us overcome philosophical delusions and the problems they engender. In this way, the book explains where and why therapy in called for in philosophy, and develops techniques to carry it out.

Many philosophical debates take for granted that there is such a thing as ‘the’ common-sense conception of the phenomenon of interest. Debates about the nature of perception tend to take for granted that there is a single, coherent common-sense conception of vision, consistent with Direct Realism. This conception is often accorded an epistemic default status. We draw on philosophical and psychological literature on naïve theories and belief fragmentation to motivate the hypothesis that untutored common sense encompasses conflicting Direct Realist and Indirect Realist conceptions: there is no such thing as ‘the’ common-sense conception of vision that could enjoy epistemic default status. To examine this hypothesis, a survey administered an agreement rating task with verbal and pictorial stimuli to lay participants. We found many laypeople simultaneously hold conflicting Direct Realist and Indirect Realist beliefs about vision. Against common assumptions, Direct Realist beliefs are not clearly dominant, and consistent adherence to Direct Realism is not the norm, but the exception. These findings are consistent with recent accounts of belief fragmentation. They forcefully challenge common methodology in philosophical debates about the nature of perception and beyond.

What is the experience of someone who is “colour‐blind” like? This paper presents the results of a study that uses qualitative research methods to better understand the lived experience of colour blindness. Participants were asked to describe their experiences of a variety of coloured stimuli, both with and without EnChroma glasses—glasses which, the manufacturers claim, enhance the experience of people with common forms of colour blindness. More generally, the paper provides a case study in the nascent field of experimental philosophy of experience.

Experimental philosophy is one of the most exciting and controversial philosophical movements today. This book explores how it is reshaping thought about philosophical method. Experimental philosophy imports experimental methods and findings from psychology into philosophy. These fresh resources can be used to develop and defend both armchair methods and naturalist approaches, on an empirical basis. This outstanding collection brings together leading proponents of this new meta-philosophical naturalism, from within and beyond experimental philosophy. They explore how the empirical study of philosophically relevant intuition and cognition transforms traditional philosophical approaches and facilitates fresh ones. Part One examines important uses of traditional "armchair" methods which are not threatened by experimental work and develops empirically informed accounts of such methods that can potentially stand up to experimental scrutiny. Part Two analyses different uses and rationales of experimental methods in several areas of philosophy and addresses the key methodological challenges to experimental philosophy: Do its experiments target the intuitions that matter in philosophy? And how can they support conclusions about the rights and wrongs of philosophical views? Essential reading for students of experimental philosophy and metaphilosophy, _Experimental Philosophy, Rationalism, and Naturalism_ will also interest students and researchers in related areas such as epistemology and the philosophies of language, perception, mind and action, science and psychology.

The later Wittgenstein is notoriously hard to understand. His novel philosophical approach is the key to understanding his perplexing work. This volume assembles leading Wittgenstein scholars to come to grips with its least well understood aspect: the unfamiliar aims and method that shape Wittgenstein's approach. _Wittgenstein at Work _investigates Wittgenstein's aims, rationale and method in two steps. The first seven chapters analyze how he proceeds in core parts of the _Philosophical Investigations_: the discussion of the Augustinian picture of language, ostensive definition, philosophical method, understanding, rule-following, and private language. The final five chapters examine his most striking methodological remarks: his repudiation of theory and non-trivial theses, and some core notions of his methodology: his notions of clarification, synoptic representation, nonsense, and philosophical pictures. The volume considerably advances discussion of the therapeutic aspects of his approach that are currently a focus of debate. This volume is an indispensable methodological companion to the _Philosophical Investigations_, useful to both specialists and students alike.

Empirical insights into language processing have a philosophical relevance that extends well beyond philosophical questions about language. This chapter will discuss this wider relevance: We will consider how experimental philosophers can examine language processing in order to address questions in several different areas of philosophy. To do so, we will present the emerging research program of experimental argument analysis (EAA) that examines how automatic language processing shapes verbal reasoning – including philosophical arguments. The evidential strand of experimental philosophy uses mainly questionnaire-based methods to assess the evidentiary value of intuitive judgments that are adduced as evidence for philosophical theories and as premises for philosophical arguments. Extending this prominent strand of experimental philosophy, EAA underpins such assessments, extends the scope of the assessments, and expands the range of the empirical methods employed: EAA examines how automatic inferences that are continually made in language comprehension and production shape verbal reasoning, and draws on findings about comprehension biases that affect the contextualisation of such default inferences, in order to explain and expose fallacies. It deploys findings to assess premises and inferences from premises to conclusions, in philosophical arguments. To do so, it adapts methods from psycholinguistics and recruits methods from computational linguistics.

Common arguments for realism about phenomenal consciousness contend that this is a folk concept, with proponents expecting it to be lexicalised in ordinary language. In English, the word ‘experience’ is typically regarded as the best candidate. This predicts that ‘experience’ will be used to refer to mental states and episodes, not only in philosophical but also in ordinary discourse. We conduct a corpus study in order to assess this claim and to understand the actual use of the word in non-academic, academic, and philosophical discourse. In non-academic discourse, uses that refer to knowledge or sources of knowledge, and to public events, are found to dominate. Uses that refer to mental states or episodes dominate only in the philosophy of mind (and not even in philosophy at large).

In this article, I develop the so‐called ‘problem of linguistic creativity’ for two object‐languages, one finite, the other infinite. I then employ an approach first outlined by Ludwig Wittgenstein’s collaborator Friedrich Waismann, to ‘dissolve’ that problem, in a sense made precise by working through the example. This is to unsettle the computational picture of linguistic understanding as turning on the generation of semantic information about sentences on the basis of semantic information about their constituent parts, and to provide a reasonably clear conception of to what such ‘philosophical dissolution’ of a problem amounts.

Several important philosophical problems (including the problems of perception, free will, and scepticism) arise from antinomies that are developed through philosophical paradoxes. The critical strand of ordinary language philosophy (OLP), as practiced by J.L. Austin, provides an approach to such ‘antinomic problems’ that proceeds from an examination of ‘ordinary language’ (how people ordinarily talk about the phenomenon of interest) and ‘common sense’ (what they commonly think about it), and deploys findings to show that the problems at issue are artefacts of fallacious reasoning. The approach is capable, and in need of, empirical development. Proceeding from a case-study on Austin’s paradigmatic treatment of the problem of perception, this paper identifies the key empirical assumptions informing the approach, assesses them in the light of empirical findings about default inferences, contextualisation failures, and belief fragmentation, and explores how these findings can be deployed to address the problem of perception. This facilitates a novel resolution of the problem of perception. Proceeding from this paradigm, the paper proposes ‘experimental critical OLP’ as a new research program in experimental philosophy that avoids apparent non-sequiturs of OLP, extends and transforms experimental philosophy’s ‘sources program’, and provides a promising new strategy for deploying empirical findings about how people ordinarily talk and think about phenomena, to address longstanding philosophical problems.

How does experimental philosophy address philosophical questions and problems? That is: What projects does experimental philosophy pursue? What is their philosophical relevance? And what empirical methods do they employ? Answers to these questions will reveal how experimental philosophy can contribute to the longstanding ambition of placing philosophy on the ‘secure path of a science’, as Kant put it. We argue that experimental philosophy has introduced a new methodological perspective – a ‘meta-philosophical naturalism’ that addresses philosophical questions about a phenomenon by empirically investigating how people think about this phenomenon. This chapter asks how this novel perspective can be successfully implemented: How can the empirical investigation of how people think about something address genuinely philosophical problems? And what methods – and, specifically, what methods beyond the questionnaire – can this investigation employ? We first review core projects of experimental philosophy and raise the question of their philosophical relevance. For ambitious answers, we turn to experimental philosophy’s most direct historical precursor, mid-20th century ordinary language philosophy, and discuss empirical implementations of two of its research programmes that use experimental methods from psycholinguistics and corpus methods from the digital humanities.

Philosophers are often credited with particularly well-developed conceptual skills. The ‘expertise objection’ to experimental philosophy builds on this assumption to challenge inferences from findings about laypeople to conclusions about philosophers. We draw on psycholinguistics to develop and assess this objection. We examine whether philosophers are less or differently susceptible than laypersons to cognitive biases that affect how people understand verbal case descriptions and judge the cases described. We examine two possible sources of difference: Philosophers could be better at deploying concepts, and this could make them less susceptible to comprehension biases (‘linguistic expertise objection’). Alternatively, exposure to different patterns of linguistic usage could render philosophers vulnerable to a fundamental comprehension bias, the linguistic salience bias, at different points (‘linguistic usage objection’). Together, these objections mount a novel ‘master argument’ against experimental philosophy. To develop and empirically assess this argument, we employ corpus analysis and distributional semantic analysis and elicit plausibility ratings from academic philosophers and psychology undergraduates. Our findings suggest philosophers are better at deploying concepts than laypeople but are susceptible to the linguistic salience bias to a similar extent and at similar points. We identify methodological consequences for experimental philosophy and for philosophical thought experiments.

In philosophical thought experiments, as in ordinary discourse, our understanding of verbal case descriptions is enriched by automatic comprehension inferences. Such inferences have us routinely infer what else is also true of the cases described. We consider how such routine inferences from polysemous words can generate zombie intuitions: intuitions that are ‘killed’ (defeated) by contextual information but kept cognitively alive by the psycholinguistic phenomenon of linguistic salience bias. Extending ‘evidentiary’ experimental philosophy, this paper examines whether the ‘zombie argument’ against materialism is built on zombie intuitions. We examine the hypothesis that contextually defeated stereotypical inferences from the noun ‘zombie’ influence intuitions about ‘philosophical zombies’. We document framing effects (‘zombie’ vs ‘duplicate’) predicted by the hypothesis. Findings undermine intuitions about the conceivability of ‘philosophical zombies’ and address the philosophical ‘hard problem of consciousness’. Findings support a deflationary response: The impression that principled obstacles prevent scientific explanation of how physical processes give rise to conscious experience is generated by philosophical arguments that rely on epistemically deficient intuitions.

This paper empirically raises and examines the question of ‘conceptual control’: To what extent are competent thinkers able to reason properly with new senses of words? This question is crucial for conceptual engineering. This prominently discussed philosophical project seeks to improve our representational devices to help us reason better. It frequently involves giving new senses to familiar words, through normative explanations. Such efforts enhance, rather than reduce, our ability to reason properly, only if competent language users are able to abide by the relevant explanations, in language comprehension and verbal reasoning. This paper examines to what extent we have such ‘conceptual control’ in reasoning with new senses. The paper draws on psycholinguistic findings about polysemy processing to render this question empirically tractable and builds on recent findings from experimental philosophy to address it. The paper identifies a philosophically important gap in thinkers’ control over the key process of stereotypical enrichment and discusses how conceptual engineers can use empirical methods to work around this gap in conceptual control. The paper thus empirically demonstrates the urgency of the question of conceptual control and explains how experimental philosophy can empirically address the question, to render conceptual engineering feasible as an ameliorative enterprise.

This paper trials new experimental methods for the analysis of natural language reasoning and the development of critical ordinary language philosophy in the wake of J.L. Austin. Philosophical arguments and thought experiments are strongly shaped by default pragmatic inferences, including stereotypical inferences. Austin suggested that contextually inappropriate stereotypical inferences are at the root of some philosophical paradoxes and problems, and that these can be resolved by exposing those verbal fallacies. This paper builds on recent efforts to empirically document inappropriate stereotypical inferences that may drive philosophical arguments. We demonstrate that previously employed questionnaire-based output measures do not suffice to exclude relevant confounds. We then report an experiment that combines reading time measurements with plausibility ratings. The study seeks to provide evidence of inappropriate stereotypical inferences from appearance verbs that have been suggested to lie at the root of the influential ‘argument from illusion’. Our findings support a diagnostic reconstruction of this argument. They provide the missing component for proof of concept for an experimental implementation of critical ordinary language philosophy that is in line with the ambitions of current ‘evidential’ experimental philosophy.

Many philosophical thought experiments and arguments involve unusual cases. We present empirical reasons to doubt the reliability of intuitive judgments and conclusions about such cases. Inferences and intuitions prompted by verbal case descriptions are influenced by routine comprehension processes which invoke stereotypes. We build on psycholinguistic findings to determine conditions under which the stereotype associated with the most salient sense of a word predictably supports inappropriate inferences from descriptions of unusual (stereotype-divergent) cases. We conduct an experiment that combines plausibility ratings with pupillometry to document this “salience bias.” We find that under certain conditions, competent speakers automatically make stereotypical inferences they know to be inappropriate.

This paper presents a neglected philosophical approach, redevelops it on fresh empirical foundations, and seeks to bring out that it is of not merely historical interest. Building on ideas Ludwig Wittgenstein mooted in the early 1930s, Friedrich Waismann developed a distinctive metaphilosophy: Through case studies on particular philosophical problems, he identified a characteristic structure and genesis displayed by several philosophical problems and presented a distinctive dialogical method for dissolving problems of this kind. This method turns on exposing the need to endow philosophical questions or claims with more determinate meaning and meeting this need by proposing linguistic rules and explanations which the problems’ proponents are free to accept or reject. The approach is embedded in the view that unconscious thought decisively shapes the formulation of philosophical problems. This paper first presents the approach on the basis of Waismann’s texts and then redevelops it through a case study on the ‘problem of perception’ and within a post-Freudian conception of unconscious thought: We will draw on psycholinguistic findings about automatic inferences in language comprehension and production, to examine how unconscious cognition shapes the problem formulation. Findings provide fresh, empirical foundations for the approach which has advantages over more familiar critical projects in ordinary language philosophy, to which it is kindred in spirit.

This paper provides new tools for philosophical argument analysis and fresh empirical foundations for ‘critical’ ordinary language philosophy. Language comprehension routinely involves stereotypical inferences with contextual defeaters. J.L. Austin’s Sense and Sensibilia first mooted the idea that contextually inappropriate stereotypical inferences from verbal case-descriptions drive some philosophical paradoxes; these engender philosophical problems that can be resolved by exposing the underlying fallacies. We build on psycholinguistic research on salience effects to explain when and why even perfectly competent speakers cannot help making stereotypical inferences which are contextually inappropriate. We analyse a classical paradox about perception, suggest it relies on contextually inappropriate stereotypical inferences from appearance-verbs, and show that the conditions we identified as leading to contextually inappropriate stereotypical inferences are met in formulations of the paradox. Three experiments use a forced-choice plausibility-ranking task to document the predicted inappropriate inferences, in English, German, and Japanese. The cross-linguistic study allows us to assess the wider relevance of the proposed analysis. Our findings open up new perspectives for ‘evidential’ experimental philosophy.