John Rogers Searle (/sɜːrl/ⓘ; July 31, 1932 – September 17, 2025) was an American philosopher widely noted for contributions to thephilosophy of language,philosophy of mind, andsocial philosophy. He began teaching at theUniversity of California, Berkeley, in 1959 and was Willis S. and Marion Slusser Professor Emeritus of the Philosophy of Mind and Language and Professor of the Graduate School until June 2019, when his status as professor emeritus was revoked because he was found to have violated the university'ssexual harassment policies.[5]
As an undergraduate at theUniversity of Wisconsin–Madison, Searle was secretary of "Students againstJoseph McCarthy". He received all his university degrees, BA, MA, and DPhil, from theUniversity of Oxford, where he held his first faculty positions. Later, at UC Berkeley, he became the first tenured professor to join the 1964–1965Free Speech Movement. In the late 1980s, Searle challenged the restrictions of Berkeley's 1980rent stabilization ordinance. Following what came to be known as the California Supreme Court's "Searle Decision" of 1990, Berkeley changed its rent control policy, leading to large rent increases between 1991 and 1994.
Searle's early work, which did much to establish his reputation, was onspeech acts. He attempted to synthesize ideas from many colleagues – includingJ. L. Austin (the "illocutionary act", fromHow To Do Things with Words),Ludwig Wittgenstein andG. C. J. Midgley (the distinction between regulative and constitutive rules) – with his own thesis that such acts are constituted by therules of language. He also drew on the work ofPaul Grice (the analysis of meaning as an attempt at being understood), Hare and Stenius (the distinction, concerning meaning, between illocutionary force and propositional content),P. F. Strawson,John Rawls andWilliam Alston, who maintained that sentence meaning consists in sets of regulative rules requiring the speaker to perform the illocutionary act indicated by the sentence and that such acts involve the utterance of a sentence which (a) indicates that one performs the act; (b) means what one says; and (c) addresses an audience in the vicinity.[11]
In his 1969 bookSpeech Acts, Searle sets out to combine all these elements to give his account ofillocutionary acts. There, he provides an analysis of what he considers the prototypical illocutionary act of promising and offers sets of semantical rules intended to represent thelinguistic meaning of devices indicating further illocutionary act types. Among concepts presented in the book is the distinction between the "illocutionary force" and the "propositional content" of anutterance. Searle does not define the former but introduces several possible illocutionary forces by example. According to Searle, the sentences —
Sam smokes habitually.
Does Sam smoke habitually?
Sam, smoke habitually!
Would that Sam smoked habitually!
— each indicates the same propositional content (Sam smoking habitually) but differ in the illocutionary force indicated (respectively, a statement, a question, a command, and an expression of desire).[12]
According to a later account, which Searle presents inIntentionality (1983) and which differs in important ways from the one suggested inSpeech Acts, illocutionary acts are characterised by having "conditions of satisfaction", an idea adopted from Strawson's 1971 paper "Meaning and Truth", and a "direction of fit", an idea adopted from Austin andElizabeth Anscombe. For example, the statement "John bought two candy bars" is satisfied if and only if it is true, i.e., John did buy two candy bars. By contrast, the command "John, buy two candy bars!" is satisfied if and only if John carries out the action of purchasing two candy bars. Searle refers to the first as having the "word-to-world" direction of fit, since the words are supposed to change to accurately represent the world, and the second as having the "world-to-word" direction of fit, since the world is supposed to change to match the words. There is also the double direction of fit, in which the relationship goes both ways, and the null or zero direction of fit, in which it goes neither way because the propositional content is presupposed, as in "I am sorry I ate John's candy bars."[citation needed]
InFoundations of Illocutionary Logic[13] (1985, with Daniel Vanderveken), Searle prominently uses the notion of the "illocutionary point".[14]
Searle's speech-act theory has been challenged by several thinkers in various ways. Collections of articles referring to Searle's account are found in Burkhardt 1990[15] and Lepore / van Gulick 1991.[16]
InIntentionality: An Essay in the Philosophy of Mind (1983), Searle applies the principles of his account(s) ofillocutionary acts to the investigation ofintentionality, which is central to Searle's "Philosophy of Mind". (Searle is at pains to emphasize that 'intentionality', the capacity of mental states to beabout worldly objects, is not to be confused with 'intensionality', the referential opacity of contexts that fail tests for 'extensionality'.[17])
For Searle,intentionality is exclusively mental, being the power of minds torepresent or symbolize over, things, properties and states of affairs in the external world.[18] Causal covariance, about-ness and the like are not enough: maps, for instance, only have a 'derived' intentionality, a mere after-image of the real thing.[citation needed]
Searle also introduces a technical termthe Background,[19] which, according to him, has been the source of much philosophical discussion ("though I have been arguing for this thesis for almost twenty years," Searle writes,[20] "many people whose opinions I respect still disagree with me about it"). He callsBackground the set of abilities, capacities, tendencies, and dispositions that humans have that are not themselves intentional states but that generate appropriate such states on demand.[citation needed]
Thus, when someone is asked to "cut the cake," they know to use a knife and when someone is asked to "cut the grass," they know to use a lawnmower (and not vice versa), even though the request did not mention this. Beginning with the possibility of reversing these two, an endless series of sceptical, anti-real or science-fiction interpretations could be imagined. "I wish to say that there is aradical underdetermination of what is said by the literal meaning," emphasizes Searle.[21] The Background fills the gap, being the capacity always to have a suitable interpretation to hand. "I just take a huge metaphysics for granted," he says.[22] Searle sometimes supplements his reference to theBackground with the concept ofthe Network, one's network of other beliefs, desires, and other intentional states necessary for any particular intentional state to make sense.[citation needed]
To give an example, two chess players might be engaged in a bitter struggle at the board, but they share all sorts of Background presuppositions: that they will take turns to move, that no one else will intervene, that they are both playing to the same rules, that the fire alarm will not go off, that the board will not suddenly disintegrate, that their opponent will not magically turn into a grapefruit, and so on indefinitely. As most of these possibilities will not have occurred to either player, Searle thinks the Background is itself unconscious as well as nonintentional.[23] To have a Background is to have a set of brain structures that generate appropriate intentional states (if the fire alarm does go off, say). "Those brain structures enable me to activate the system of intentionality and to make it function, but the capacities realized in the brain structures do not themselves consist in intentional states."[24]
It seems to Searle thatHume andNietzsche were probably the first philosophers to appreciate, respectively, the centrality and radical contingency of the Background. "Nietzsche saw, with anxiety, that the Background does not have to be the way it is."[25] Searle also thinks that a Background appears in the ideas of other modern thinkers: as the river-bed/substratum of Wittgenstein'sOn Certainty[26] ("the work of the later Wittgenstein is in large part about the Background, especiallyOn Certainty"[27]) andPierre Bourdieu'shabitus.
Inhis debate with Jacques Derrida, Searle argued againstDerrida's purported view that a statement can be disjoined from the original intentionality of its author, for example when no longer connected to the original author, while still being able to produce meaning. Searle maintained that even if one was to see a written statement with no knowledge of authorship it would still be impossible to escape the question of intentionality, because "a meaningful sentence is just a standing possibility of the (intentional) speech act". For Searle, ascribing intentionality to a statement was a basic requirement for attributing it any meaning at all.[28][29]
Building upon his views about intentionality, Searle presents a view concerning consciousness in his bookThe Rediscovery of the Mind (1992). He argues that, starting withbehaviorism, an early but influential scientific view, succeeded by many later accounts that Searle also dismisses, much of modern philosophy has tried to deny the existence of consciousness, with little success. InIntentionality, he parodies several alternative theories of consciousness by replacing their accounts of intentionality with comparable accounts of the hand:
No one would think of saying, for example, "Having a hand is just being disposed to certain sorts of behavior such as grasping" (manual behaviorism), or "Hands can be defined entirely in terms of their causes and effects" (manualfunctionalism), or "For a system to have a hand is just for it to be in a certain computer state with the right sorts of inputs and outputs" (manualTuring machine functionalism), or "Saying that a system has hands is just adopting a certain stance toward it" (themanual stance) (p. 263).
Searle argues that philosophy has been trapped by afalse dichotomy: that, on one hand, the world consists of nothing but objective particles in fields of force, but that yet, on the other hand, consciousness is clearly a subjective first-person experience.[citation needed]
Searle says simply that both are true: consciousness is a real subjective experience, caused by the physical processes of the brain. This is an aspect of his theory ofbiological naturalism.[citation needed]
Searle argues[31] that critics likeDaniel Dennett,[32] who he claims insist that discussing subjectivity is unscientific because science presupposes objectivity, are making acategory error. Perhaps the goal of science is to establish and validate statements which areepistemically objective, i.e., whose truth can be discovered and evaluated by any interested party, but are not necessarilyontologically objective.[citation needed]
Searle calls anyvalue judgment epistemicallysubjective. Thus, "McKinley is prettier thanEverest" is "epistemically subjective", whereas "McKinley is higher than Everest" is "epistemically objective". In other words, the latter statement is evaluable, in fact, falsifiable, by an understood ('background') criterion for mountain height, like "the summit is so many meters above sea level". No such criteria exist for prettiness.[citation needed]
Beyond this distinction, Searle thinks there are certain phenomena, including all conscious experiences, that areontologically subjective, i.e., can only exist as subjective experience. For example, although it might be subjective or objective in the epistemic sense, a doctor's note that a patient suffers from back pain is an epistemicallyobjective claim: it counts as a medical diagnosis only because the existence of back pain is "an objective fact of medical science".[33] The pain itself, however, isontologically subjective: it is only experienced by the person having it.[citation needed]
Searle goes on to affirm that "where consciousness is concerned, the existence of the appearanceis the reality".[34] His view that the epistemic and ontological senses of objective/subjective are cleanly separable is crucial to his self-proclaimedbiological naturalism, because it allows epistemically objective judgments like "That object is a pocket calculator" to pick out agent-relative features of objects, and such features are, on his terms, ontologically subjective, unlike, say, "That object is made mostly of plastic".[citation needed]
Biological naturalism implies that if humans want to create a conscious being, they will have to duplicate whatever physical processes the brain goes through to cause consciousness. Searle thereby means to contradict what he calls "Strong AI", defined by the assumption that "the appropriately programmed computer really is a mind, in the sense that computers given the right programs can be literally said tounderstand and have other cognitive states."[35]
In 1980, Searle presented the "Chinese room" argument, which purports to prove the falsity of strong AI.[35] A person is in a room with two slits, and they have a book and some scratch paper. This person does not know any Chinese. Someone outside the room slides some Chinese characters in through the first slit; the person in the room follows the instructions in the book, transcribing the characters as instructed onto the scratch paper, and slides the resulting sheet out by the second slit. To people outside the room, it appears that the room speaks Chinese – they have slid Chinese statements into one slit and got valid responses in English – yet the 'room' does not understand a word of Chinese. This suggests, according to Searle, that no computer can ever understand Chinese or English, because, as thethought experiment suggests, being able to 'translate' Chinese into English does not entail 'understanding' either Chinese or English: all that the person in the thought experiment, and hence a computer, is able to do is to execute certain syntactic manipulations.[36][37]Douglas Hofstadter andDaniel Dennett in their bookThe Mind's I criticize Searle's view of AI, particularly the Chinese room argument.[38]
Stevan Harnad argues that Searle's "Strong AI" is really just another name forfunctionalism andcomputationalism, and that these positions are the real targets of his critique.[39] Functionalists argue that consciousness can be defined as a set of informational processes inside the brain. It follows that anything that carries out the same informational processes as a human is also conscious. Thus, if humans wrote a computer program that was conscious, they could run that computer program on, say, a system of ping-pong balls and beer cups and the system would be equally conscious, because it was running the same information processes.[citation needed]
Searle argues that this is impossible, contending that consciousness is a physical property, like digestion or fire. No matter how good a simulation of digestion is built on the computer, it will not digest anything; no matter how well it simulates fire, nothing will get burnt. By contrast, informational processes areobserver-relative: observers pick out certain patterns in the world and consider them information processes, but information processes are not things-in-the-world themselves. Since they do not exist at a physical level, Searle argues, they cannot havecausal efficacy and thus cannot cause consciousness. There is no physical law, Searle insists, that can see the equivalence between a personal computer, a series of ping-pong balls and beer cans, and a pipe-and-water system all implementing the same program.[40]
Searle extended his inquiries into observer-relative phenomena by trying to understand social reality. Searle begins by arguingcollective intentionality (e.g., "we are going for a walk") is a distinct form of intentionality, not simply reducible to individual intentionality (e.g., "I am going for a walk with him and I think he thinks he is going for a walk with me and he thinks I think I am going for a walk with him and...")[citation needed]
InThe Construction of Social Reality (1995), Searle addresses the mystery of how social constructs like "baseball" or "money" can exist in a world consisting only of physical particles in fields of force. Adapting an idea byElizabeth Anscombe in "On Brute Facts", Searle distinguishes betweenbrute facts, like the height of a mountain, andinstitutional facts, like the score of a baseball game. Aiming at an explanation of social phenomena in terms of Anscombe's notion, he argues that society can be explained in terms of institutional facts, and institutional facts arise out of collective intentionality through constitutive rules with the logical form "X counts as Y in C". Thus, for instance, filling out a ballot counts as a vote in a polling place, getting so many votes counts as a victory in an election, getting a victory counts as being elected president in the presidential race, etc.[citation needed]
Many sociologists, however, do not see Searle's contributions to social theory as very significant.Neil Gross, for example, argues that Searle's views on society are more or less a reconstitution of the sociologistÉmile Durkheim's theories of social facts, social institutions, collective representations, and the like. Searle's ideas are thus open to the same criticisms as Durkheim's.[41] Searle responded that Durkheim's work was worse than he had originally believed and, admitting he had not read much of Durkheim's work, said: "Because Durkheim's account seemed so impoverished I did not read any further in his work."[42]Steven Lukes, however, responded to Searle's response to Gross and argued point by point against the allegations that Searle makes against Durkheim, essentially upholding Gross's argument that Searle's work bears a great resemblance to Durkheim's. Lukes attributes Searle's miscomprehension of Durkheim's work to the fact that Searle had never read Durkheim.[43]
In recent years, Searle's main interlocutor on issues of social ontology has beenTony Lawson. Although their accounts of social reality are similar, there are important differences. Lawson emphasizes the notion of social totality whereas Searle prefers to refer to institutional facts. Furthermore, Searle believes that emergence implies causal reduction whereas Lawson argues that social totalities cannot be completely explained by the causal powers of their components. Searle also places language at the foundation of the construction of social reality, while Lawson believes that community formation necessarily precedes the development of language and, therefore, there must be the possibility for non-linguistic social structure formation.[44][45][46] The debate is ongoing and takes place additionally through regular meetings of the Centre for Social Ontology at theUniversity of California, Berkeley and the Cambridge Social Ontology Group at theUniversity of Cambridge.[47]
InRationality in Action (2001), Searle argues that standard notions of rationality are badly flawed. According to what he calls the Classical Model, rationality is seen as something like a train track: a person moves onto it at one point with their beliefs and desires, and then the rules of rationality compel them all the way to a conclusion. Searle doubts that this picture of rationality holds generally.[citation needed]
Searle briefly critiques one particular set of these rules: those of mathematicaldecision theory. He points out that its axioms require that anyone who valued a quarter and their life would, at some odds, bet their life for a quarter. Searle insists he would never take such a bet and believes that this stance is perfectly rational.[citation needed]
Most of his attack is directed against the common conception of rationality, which he believes is badly flawed. First, he argues that reason does not cause an individual to do anything, because having sufficient reasonwills, but does notforce, them to do that thing. Therefore, in any decision situation, people experience a gap between reasons and actions. For example, when a person decides to vote, they may determine that they care most about economic policy and that they prefer candidate Jones's economic policy, but they must also make an effort to actually cast a vote. Similarly, every time a smoker who feels guilty about their action lights a cigarette, they are aware that they are succumbing to their craving, and not merely acting automatically as they do when they exhale. This gap makes people think they havefreedom of the will. Searle thinks that whether one really hasfree will or not is an open question, but considers its absence highly unappealing because it makes the feeling of freedom of will an epiphenomenon, which is highly unlikely from the evolutionary point of view given its biological cost. He also says, "All rational activity presupposes free will".[48]
Second, Searle believes that people can rationally do things that do not result from their own desires. It is widely believed that one cannot derive an "ought" from an "is", i.e., that facts about how the world is can never tell a person what they should do (Hume's Law). By contrast, insofar as a fact is understood to relate to an institution (marriage, promises, commitments, etc.), which is to be understood as a system of constitutive rules, then what one should do can be understood as following from the institutional fact of what one has done; institutional fact, then, can be understood as opposed to the "brute facts" related to Hume's Law. For example, Searle believes that the promise of doing something means that one must do it, because by making the promise one participates in the constitutive rules that arrange the system of promise-making itself; a "shouldness" is implicit in the mere factual action of promising. Furthermore, he believes that this provides a desire-independent reason for an action – if one orders a drink at a bar, there is an obligation to pay for it even if one has no desire to do so. This argument, which he first made in his paper, "How to Derive 'Ought' from 'Is'" (1964),[49] remains highly controversial, but Searle maintained that "the traditional metaphysical distinction between fact and value cannot be captured by the linguistic distinction between 'evaluative' and 'descriptive' because all such speech act notions are already normative".[50]
Third, Searle argues that much of rational deliberation involves adjusting patterns of desires, which are often inconsistent, to decide between outcomes, not the other way around. While in the Classical Model one would start from viewing a desire to go to Paris as a greater factor than saving money, which would lead to calculating the cheapest way to get there, Searle would argue that people balance the desire of Paris against the desire to save money to determine which one they value more. Hence, he believes that rationality is not a system of rules, but more of an adverb. Certain behaviors are seen as rational, no matter what their source, and a system of rules derives from finding patterns in what is considered rational.[citation needed]
AfterJacques Derrida, in his 1972 paper "Signature Event Context," responded toJ. L. Austin's theory of theillocutionary act, Searle argued, in his 1977 essay "Reiterating the Differences: A Reply to Derrida," that Derrida's apparent rejection of Austin was unwarranted. Searle later refused to let his 1977 reply be printed along with Derrida's papers in the 1988 collectionLimited Inc — in which a new text by Derrida attacked Searle's positions on the topic. In the 1990s, Searle elaborated on why he did not consider Derrida's approach to be legitimate philosophy.[citation needed]
While an undergraduate at theUniversity of Wisconsin–Madison, Searle became the secretary of "Students againstJoseph McCarthy".[51] McCarthy at that time served as thejunior senator fromWisconsin. In 1959, Searle began teaching at Berkeley, and he was the first tenured professor to join the 1964–65Free Speech Movement.[52] In 1969, while serving as chairman of the Academic Freedom Committee of the Academic Senate of the University of California,[53] he supported the university in its dispute with students over thePeople's Park.
InThe Campus War: A Sympathetic Look at the University in Agony (1971),[54] Searle investigates the causes behind the campus protests of the era. In it he declares, "I have been attacked by both theHouse Un-American Activities Committee and ... by several radical polemicists.... Stylistically, the attacks are interestingly similar. Both rely heavily on insinuation and innuendo, and both display a hatred — one might almost say terror — of close analysis and dissection of argument." He asserts that "My wife was threatened that I (and other members of the administration) would beassassinated or violently attacked."[51]
In the late 1980s, Searle, along with other landlords, petitioned Berkeley's rental board to raise the limits on how much he could charge tenants under the city's 1980rent-stabilization ordinance.[55] The rental board refused to consider Searle's petition and Searle filed suit, charging a violation of due process. In 1990, in what came to be known as the "Searle Decision", the California Supreme Court upheld Searle's argument in part and Berkeley changed its rent-control policy, leading to large rent-increases between 1991 and 1994. Searle was reported to see the issue as one of fundamental rights, being quoted as saying "The treatment of landlords in Berkeley is comparable to the treatment of blacks in the South... our rights have been massively violated and we are here to correct that injustice."[56] The court described the debate as a "morass of political invective, ad hominem attack, and policy argument".[57]
Shortly after theSeptember 11 attacks, Searle wrote an article arguing that the attacks were a particular event in a long-term struggle against forces that are intractably opposed to the United States, and signaled support for a more aggressiveneoconservativeinterventionistforeign policy. He called for the realization that the United States is in a more-or-less permanentstate of war with these forces. Moreover, a probable course of action would be to denyterrorists the use of foreign territory from which to stage their attacks. Finally, he alluded to the long-term nature of the conflict and blamed the attacks on the lack of American resolve to deal forcefully with America's enemies over the past several decades.[58]
In March 2017, Searle became the subject ofsexual assault allegations. TheLos Angeles Times reported: "A new lawsuit alleges that university officials failed to properly respond to complaints that John Searle ... sexually assaulted his ... research associate last July and cut her pay when she rejected his advances."[59][60] The case brought to light several earlier complaints against Searle, on which Berkeley allegedly had failed to act.[61][62]
The lawsuit, filed in a California court on March 21, 2017, allegedsexual harassment, retaliation,wrongful termination and assault and battery and sought damages both from Searle and from theRegents of the University of California as his employers.[63] It also claims that Jennifer Hudin, the director of the John Searle Center for Social Ontology, where the complainant had been employed as an assistant to Searle, has stated that Searle "has had sexual relationships with his students and others in the past in exchange for academic, monetary or other benefits".[63] After news of the lawsuit became public, several previous allegations of sexual harassment and assault by Searle were also revealed.[64]
On June 19, 2019, following campus disciplinary proceedings by Berkeley's Office for the Prevention of Harassment and Discrimination, University of California PresidentJanet Napolitano approved a recommendation that Searle have his emeritus status revoked, after a determination that he had violated university policies against sexual harassment and retaliation between July and September 2016.[5]
Searle was the Willis S. and Marion Slusser Professor Emeritus of the Philosophy of Mind and Language and Professor of the Graduate School at theUniversity of California, Berkeley; even though he retired in 2014, he continued teaching until 2016.[66] In June 2019, the emeritus title was revoked.[5]
Searle enjoyed skiing, sailing and wine tasting. He owned a vineyard in Napa Valley, California.[67]
Making the Social World: The Structure of Human Civilization (2010)
"What Your Computer Can't Know" (review ofLuciano Floridi,The Fourth Revolution: How the Infosphere Is Reshaping Human Reality, Oxford University Press, 2014; andNick Bostrom,Superintelligence: Paths, Dangers, Strategies, Oxford University Press, 2014),The New York Review of Books, vol. LXI, no. 15 (October 9, 2014), pp. 52–55.
Seeing Things As They Are: A Theory of Perception (2015)
^Hofstadter, D., 1981, 'Reflections on Searle', in Hofstadter and Dennett (eds.), The Mind's I, New York: Basic Books, pp. 373–382.
^Harnad, Stevan (2001), "What's Wrong and Right About Searle's Chinese Room Argument", in M.; Preston, J.,Essays on Searle's Chinese Room Argument, Oxford University Press.
^Lukes, Steven (2007), Tsohatzidis, Savas L. (ed.),"Searle versus Durkheim",Intentional Acts and Institutional Facts: Essays on John Searle's Social Ontology, Theory and Decision Library, Dordrecht: Springer Netherlands, pp. 191–202,doi:10.1007/978-1-4020-6104-2_9,ISBN978-1-4020-6104-2, retrievedDecember 5, 2020
^Searle, John R. (December 1, 2016). "The Limits of Emergence: Reply to Tony Lawson".Journal for the Theory of Social Behaviour.46 (4):400–412.doi:10.1111/jtsb.12125.ISSN1468-5914.
^John Searle in Thomas Mautner,Dictionary of Philosophy (Penguin 1996).ISBN978-0-14-051250-2
^abSearle, John R. (1971)."The Anatomy of Student Revolts".The Campus War.Archived from the original on May 27, 2023. RetrievedNovember 14, 2024 – via Digital Text International.
^Searle, John R. (1971)."The Faculty".The Campus War.Archived from the original on April 4, 2023. RetrievedNovember 14, 2024 – via Digital Text International.
"Collective Intentions and Actions" (1990) inIntentions in Communication by Philip R. Cohen, Jerry L. Morgan & Martha E. Pollack (eds.). Cambridge, Mass.: MIT Press: pp. 401–416.
D. Koepsell (ed.) and L. Moss (ed.) "Searle and Smith: A Dialogue" inJohn Searle's Ideas About Social Reality: Extensions, Criticisms, and Reconstructions (2003), Blackwell,ISBN978-1-4051-1258-1
Dualism revisitedJ Physiol Paris. 2007 Jul–Nov;101(4–6):169–78. Epub 2008 Jan 19.
Gary Marcus, "Am I Human?: Researchers need new ways to distinguishartificial intelligence from the natural kind",Scientific American, vol. 316, no. 3 (March 2017), pp. 58–63.Multiple tests of artificial-intelligence efficacy are needed because, "just as there is no single test ofathletic prowess, there cannot be one ultimate test ofintelligence." One such test, a "Construction Challenge", would test perception and physical action -—"two important elements of intelligent behavior that were entirely absent from the originalTuring test." Another proposal has been to give machines the same standardized tests of science and other disciplines that schoolchildren take. A so far insuperable stumbling block to artificial intelligence is an incapacity for reliabledisambiguation. "[V]irtually every sentence [that people generate] isambiguous, often in multiple ways." A prominent example is known as the "pronoun disambiguation problem": a machine has no way of determining to whom or what apronoun in a sentence—such as "he", "she" or "it"—refers.
Dilman, Ilham (2011).Philosophy as criticism : essays on Dennett, Searle, Foot, Davidson, Nozick. New York: Continuum.ISBN9786613271846.