It is often claimed that scientists can obtain new knowledge about nature by running computer simulations. How is this possible? I answer this question by arguing that computer simulations are arguments. This view parallels Norton’s argument view about thought experiments. I show that computer simulations can be reconstructed as arguments that fully capture the epistemic power of the simulations. Assuming the extended mind hypothesis, I furthermore argue that running the computer simulation is to execute the reconstructing argument. I discuss some (...) objections and reject the view that computer simulations produce knowledge because they are experiments. I conclude by comparing thought experiments and computer simulations, assuming that both are arguments. (shrink)

Good physical experiments conform to the basic methodological standards of experimental design: they are objective, reliable, and valid. But is this also true of thought experiments? Especially problems of personal identity have engendered hypothetical scenarios that are very distant from the actual world. These imagined situations have been conspicuously ineffective at resolving conflicting intuitions and deciding between the different accounts of personal identity. Using prominent examples from the literature, I argue that this is due to many of these thought experiments (...) not adhering to the methodological standards that guide experimental design in nearly all other disciplines. I also show how empirically unwarranted background assumptions about human physiology render some of the hypothetical scenarios that are employed in the debate about personal identity highly misleading. (shrink)

This chapter suggests a scheme of reconstruction, which explains how scenarios, questions and arguments figure in thought experiments. It then develops a typology of ethical thought experiments according to their function, which can be epistemic, illustrative, rhetorical, heuristic or theory-internal. Epistemic functions of supporting or refuting ethical claims rely on metaethical assumptions, for example, an epistemological background of reflective equilibrium. In this context, thought experiments may involve intuitive as well as explicitly argued judgements; they can be used to generate moral (...) commitments, to explore consequences of moral theories, and to show inconsistencies within or between moral commitments and moral theory; but the results of thought experiments by themselves do not settle what is epistemically justified and may also be rejected. Finally, some prominent challenges are discussed: do unrealistic scenarios undermine epistemic thought experiments? Are ethical thought experiments misleading? Do they rely on weak analogies? Are there specifically moral objections to ethical thought experiments? (shrink)

We argue that the term “intuition”, as it is used in metaphilosophy, is ambiguous between at least four different senses. In philosophy of language, the relevant “intuitions” are either the outputs of our competence to interpret and produce linguistic expressions, or the speakers’ or hearers’ own reports of these outputs. The semantic facts that philosophers of language are interested in are determined by the outputs of our competence. Hence, philosophers of language should be interested in investigating these, and they do (...) this by testing what we would say or understand in hypothetical communication situations. In the final section of the paper we suggest some methods for investigating these outputs which are independent of whether subjects report them, and hence which might be used as an alternative to the standard use of hypothetical cases. (shrink)

Where should computer simulations be located on the ‘usual methodological map’ which distinguishes experiment from theory? Specifically, do simulations ultimately qualify as experiments or as thought experiments? Ever since Galison raised that question, a passionate debate has developed, pushing many issues to the forefront of discussions concerning the epistemology and methodology of computer simulation. This review article illuminates the positions in that debate, evaluates the discourse and gives an outlook on questions that have not yet been addressed.

In the last decade, philosophers have offered a number of proposals concerning the logical form of hypothetical cases, or thought experiments, as these are used for purposes of testing philosophical claims. In this paper, I discuss what the desiderata for a formal proposal are. Employing a comparison with general philosophy of science, I suggest that one important desideratum is to highlight recurrent patterns of disagreement surrounding cases. I advocate a proposal in propositional modal logic which, I argue, better meets this (...) desideratum than competing proposals. I also sketch how this proposal may be extended into more fine grained analyses, employing counterfactual conditionals yet avoiding certain problems due to so-called "deviant realizations". (shrink)

Experimental ethicists investigate traditional ethical questions with non-traditional means, namely with the methods of the empirical sciences. Studies in this area have made heavy use of philosophical thought experiments such as the well-known trolley cases. Yet, the specific function of these thought experiments within experimental ethics has received little consideration. In this paper we attempt to fill this gap. We begin by describing the function of ethical thought experiments, and show that these thought experiments should not only be classified according (...) to their function but also according to their scope. On this basis we highlight several ways in which the use of thought experiments in experimental ethics can be philosophically relevant. We conclude by arguing that experimental philosophy currently only focuses on a small subcategory of ethical thought experiments and suggest a broadening of its research agenda. (shrink)

Although thought experiments were first discovered as a sui generis methodological tool by philosophers of science (most prominently by Ernst Mach), the tool can also be found – even more frequently – in contemporary philosophy. Thought experiments in philosophy and science have a lot in common. However, in this chapter we will concentrate on thought experiments in philosophy only. Their use has been the centre of attention of metaphilosophical discussion in the past decade, and this chapter will provide an overview (...) of the results this discussion has achieved and point out which issues are still open. (shrink)

This paper discusses “impartiality thought experiments”, i.e., thought experiments that attempt to generate intuitions which are unaffected by personal characteristics such as age, gender or race. We focus on the most prominent impartiality thought experiment, the Veil of Ignorance (VOI), and show that both in its original Rawlsian version and in a more generic version, empirical investigations can be normatively relevant in two ways: First, on the assumption that the VOI is effective and robust, if subjects dominantly favor a certain (...) normative judgment behind the VOI this provides evidence in favor of that judgment; if, on the other hand, they do not dominantly favor a judgment this reduces our justification for it. Second, empirical investigations can also contribute to assessing the effectiveness and robustness of the VOI in the first place, thereby supporting or undermining its applications across the board. (shrink)

semantic minimalism and moderte contextualism.

When does a human being cease to exist? For millennia, the answer to this question had remained largely unchanged: death had been diagnosed when heartbeat and breathing were permanently absent. Only comparatively recently, in the 1950s, rapid developments in intensive-care medicine called into question this widely accepted criterion. What had previously been deemed a permanent cessation of vital functions suddenly became reversible. -/- A new criterion of death was needed. It was suggested that the destruction of the brain could indicate (...) the death of the organism in the presence of external life support. Soon the so-called brain death became the new worldwide standard. In recent years, however, doubts about this neurological criterion have been growing. Is brain death really our death? -/- This is the question that this thesis seeks to answer. To this end, we shall connect the medical debate about the definition of death to the philosophical debate about personal identity. While we will find that the destruction of its brain does in fact not correspond to an organism’s death, we shall also ask whether the assumption that we are essentially organisms is correct. May brain death be the ceasing to exist of a different entity? -/- Substituting clinical case reports and considerations about human physiology for the use of thought experiments, the thesis takes a novel and philosophically unconventional approach to the problem of what we essentially are. We shall analyse various pathological conditions and their respective effects on the bodily and mental characteristics of our existence. We will conclude that brain death is indeed our death – but for reasons entirely different from those cited in the original justification of this criterion. (shrink)

In their paper, ‘When are thought experiments poor ones?’ (Peijnenburg and David Atkinson, 2003, Journal of General Philosophy of Science 34, 305-322.), Jeanne Peijnenburg and David Atkinson argue that most, if not all, philosophical thought experiments are “poor” ones with “disastrous consequences” and that they share the property of being poor with some (but not all) scientific thought experiments. Noting that unlike philosophy, the sciences have the resources to avoid the disastrous consequences, Peijnenburg and Atkinson come to the conclusion that (...) the use of thought experiments in science is in general more successful than in philosophy and that instead of concocting more “recherché” thought experiments, philosophy should try to be more empirical. In this comment I will argue that Peijnenburg’s and Atkinson’s view on thought experiments is based on a misleading characterization of both, the dialectical situation in philosophy as well as the history of physics. By giving an adequate account of what the discussion in contemporary philosophy is about, we will arrive at a considerably different evaluation of philosophical thought experiments. For I am convinced that we now find ourselves at an altogether decisive turning point in philosophy, and that we are objectively justified in considering that an end has come to the fruitless conflict of systems. We are already at the present time, in my opinion, in possession of methods which make any such conflict in principle unnecessary. What is now required is their resolute application. (Schlick, ‘The Turning Point in Philosophy’, 1930/1959, p. 54). (shrink)

What is Estonian Philosophy? What is Estonian Philosophy?

How can thought experiments lead to new empirical knowledge if they do not make use of empirical information? This puzzle has been widely discussed in the philosophy of science. It arises in conceptual metaphor research as well and is especially important for the clarification of its empirical foundations. The aim of the paper is to suggest a possible solution to the puzzle of thought experiments in conceptual metaphor research. The solution rests on the application of a novel metatheoretical framework that (...) conceives of linguistic theorizing as a process of plausible argumentation. The central idea of the solution is that through the dynamic feedback mechanism of the cyclic, prismatic and retrospective re-evaluation of information, thought experiments in conceptual metaphor research may indirectly supply the process of plausible argumentation with empirical knowledge. (shrink)

Gedankenexperimente in der Philosophie zeichnen sich durch ein widersprüchliches Verhältnis aus: Sie werden gleichzeitig häufig genutzt und vielfältig kritisiert. Im Zentrum der Kritik steht dabei das Szenario sowie seine teilweise als absurd wahrgenommenen Details. Als Verteidigungsstrategie der Methode wird daher zum einen versucht, realistische Gedankenexperimente zu bevorzugen, zum anderen, das Argument hinter dem Szenario deutlicher in den Fokus zu rücken. Im Zuge dessen wird jedoch das eigentlich Charakteristische an einem Gedankenexperiment – das Szenario – vernachlässigt. Um die Relevanz des Szenarios (...) zu betonen, soll in diesem Aufsatz ein Blick in die Wissenschaftsforschung geworfen werden. Mithilfe von Überlegungen Ludwik Flecks, Bruno Latours und David Kirbys wird die Bedeutsamkeit von Transformationsprozessen wissenschaftlicher Theorien gezeigt. Mit Veränderungsstrategien wie dem Visualisieren und Generieren von Aufmerksamkeit versuchen Wissenschaftler*innen, ihre Theorien sowohl im Kreis der Kolleg*innen als auch in der breiten Öffentlichkeit zu verbreiten. Wissenschaftskommunikation hat dabei einen epistemologischen Stellenwert für die wissenschaftliche Praxis. Die These, die in diesem Aufsatz vertreten wird, ist, dass Gedankenexperimente hierbei die Funktion von Vermittlungsinstrumenten zwischen den beiden Kreisen der wissenschaftsinternen und -externen Kommunikation einnehmen. Dies soll mit der Analyse eines konkreten Beispiels – dem Geiger-Gedankenexperiment aus der angewandten Ethik – plausibel gemacht werden. Bei der Untersuchung, wie dieses Gedankenexperiment wissenschaftlich bzw. populär dargestellt und diskutiert wird, fällt auf, dass dabei das Szenario im Zentrum der Aufmerksamkeit steht. Die eigentliche Argumentation hingegen wird meist nur aus dem Szenario missverständlich abgeleitet. Aus dieser Analyse lassen sich zwei mögliche Reaktionen ableiten: Zum einen kann sie als Begründung dafür verstanden werden, kritisch mit der Methode Gedankenexperiment umzugehen. Zum anderen – und dies ist die Position, die in diesem Aufsatz starkgemacht werden soll – kann die Beobachtung, dass das absurde Szenario des Geiger-Gedankenexperiments so populär ist, die These untermauern, dass Gedankenexperimente strategisch zur Vermittlung genutzt werden können. Absurde Szenarien können dabei hilfreich sein, weil sie Aufmerksamkeit wecken, in Erinnerung bleiben und zur Diskussion anregen. Insbesondere im Bereich der angewandten Ethik, die interdisziplinär diskutierte Themen behandelt, können Gedankenexperimente genutzt werden, um einen Diskurs zu öffnen und eine gemeinsame Diskussionsbasis zu schaffen. (shrink)

Los experimentos mentales son dispositivos epistémicos de la imaginación, o de análisis de problemas filosóficos, que recorren las fronteras de aquella, desde el sillón. Dichas fronteras tocan dilemas perennes de la filosofía: cuestiones de la metafísica, como el tiempo, el espacio y la realidad, el problema de la libertad y el determinismo, la naturaleza de la mente, la identidad personal, los argumentos acerca del significado, las posibilidades, fuentes y condiciones del conocimiento, las relaciones entre discurso y lógica, la ética, cuestiones (...) de la filosofía social y política, y la estética. Muchos problemas de la filosofía han sido abordados mediante experimentos mentales, una herramienta útil de la caja de herramientas del filósofo. No todas las herramientas son populares, no obstante. Los experimentos mentales son, pese a sus defensores, falibles, incluso si son argumentos bien planteados. Justamente, este libro recopila artículos con las principales defensas y ataques a los experimentos mentales, especialmente en términos de su confiabilidad para llegar a conclusiones, o bien de su relevancia en términos de su origen: el sillón de la filosofía. Este ha sido vapuleado por los nuevos aires de la filosofía analítica, que trata al sillón como un viejo artefacto del análisis a priori. De hecho, hay posturas que critican a los experimentos mentales por constituir bombas de intuiciones no confiables. Por supuesto, no hay razón irrefutable para aceptar los experimentos mentales y las filosofías de sillón. Pero ¿hay alguna en la filosofía? El libro no pretende convencer al lector del valor de los experimentos mentales y las filosofías de sillón. Por el contrario, su objetivo es formar una imagen propia de estos dispositivos epistémicos, tanto en relación con sus virtudes y limitaciones. Si ello se logra, habrá valido el esfuerzo llevado a cabo en esta compilación de artículos, los que muestran los límites, desafíos y críticas de la experimentación mental desde el sillón. (shrink)

Im Beitrag wird die übliche, intuitionsbasierte Bewertung ethischer Gedankenexperimente hinterfragt und stattdessen für ein neo-kantisches Verfahren der Bewertung argumentiert. Hierzu wird nach einer kurzen systematisch-historischen Verortung zunächst eine grobe Kategorisierung vorgenommen, die erstens nach der Funktion, zweitens nach der Fragestellung erfolgt, auf die Gedankenexperimente antworten. Das vorgeschlagene, neo-kantische Verfahren eignet sich insbesondere zur Bewertung einer bestimmten Kategorie von Gedankenexperimenten: Dilemmatische Situationen, in denen eine Abwägung von Menschenleben zur Debatte steht, weil nicht alle Beteiligten überleben können. Anhand von drei ausgewählten Gedankenexperimenten (...) wird das jeweilige Bewertungsverfahren betrachtet. Im Zuge des neokantischen Verfahrens wird ein „Rollentausch“ vorgenommen und danach gefragt, was alle Betroffenen „rationalerweise wollen“ können. Während die Präferenzen der Täter, die das Dilemma erst verursachen, nicht in die Überlegung eingehen, hängt die Bewertung der Perspektive der Opfer von Art und Ausmaß ihrer Bedrohung ab. Passagiere und Crew des entführten Flugzeugs, deren Tod unausweichlich bevorsteht, könnten einem Abschuss, der vielen anderen das Leben rettet, rationalerweise zustimmen. Beim Gedankenexperiment von Jim und den Indianern ist dies nur bedingt der Fall. In fast allen Varianten des Trolley-Experiments kann nicht davon ausgegangen werden, dass die jeweilige Person der Opferung ihres Lebens für andere zustimmt. In einem letzten Punkt wird auf den Einwand Humes eingegangen, dass weder ein radikal egoistisches noch ein übertrieben altruistisches Wollen als „irrational“ bezeichnet werden kann. (shrink)