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Problem of induction

The problem of induction is the philosophical question of whether inductive reasoning leads to knowledge understood in the classic philosophical sense, highlighting the apparent lack of justification for:

  1. Generalizing about the properties of a class of objects based on some number of observations of particular instances of that class (e.g., the inference that "all swans we have seen are white, and, therefore, all swans are white", before the discovery of black swans) or
  2. Presupposing that a sequence of events in the future will occur as it always has in the past (e.g., that the laws of physics will hold as they have always been observed to hold). Hume called this the principle of uniformity of nature.


  • From causes which appear similar we expect similar effects. This is the sum of all our experimental conclusions. Now it seems evident that, if this conclusion were formed by reason, it would be as perfect at first, and upon one instance, as after ever so long a course of experience. But the case is far otherwise. Nothing so like as eggs; yet no one, on account of this appearing similarity, expects the same taste and relish in all of them. It is only after a long course of uniform experiments in any kind, that we attain a firm reliance and security with regard to a particular event. Now where is that process of reasoning which, from one instance, draws a conclusion, so different from that which it infers from a hundred instances that are nowise different from that single one? This question I propose as much for the sake of information, as with an intention of raising difficulties. I cannot find, I cannot imagine any such reasoning.
    • David Hume, An Enquiry Concerning Human Understanding, 4. Sceptical doubts concerning the operations of the understanding

See alsoEdit

Philosophy of science
Concepts AnalysisAnalytic–synthetic distinctionA priori and a posterioriCausalityCommensurabilityConsilienceConstructCreative synthesisDemarcation problemEmpirical evidenceExplanatory powerFactFalsifiabilityFeminist methodIgnoramus et ignorabimusInductive reasoningIntertheoretic reductionInquiryNatureObjectivityObservationParadigmProblem of inductionScientific lawScientific methodScientific revolutionScientific theoryTestabilityTheory choiceTheory-ladennessUnderdeterminationUnity of science
Metatheory of science CoherentismConfirmation holismConstructive empiricismConstructive realismConstructivist epistemologyContextualismConventionalismDeductive-nomological modelHypothetico-deductive modelInductionismEpistemological anarchismEvolutionismFallibilismFoundationalismInstrumentalismPragmatismModel-dependent realismNaturalismPhysicalismPositivism/reductionism/determinismRationalism/empiricismReceived view/semantic view of theoriesScientific realism/anti-realismScientific essentialismScientific formalismScientific skepticismScientismStructuralismUniformitarianismVitalism
Related topics AlchemyCriticism of scienceEpistemologyFaith and rationalityHistory and philosophy of scienceHistory of scienceHistory of evolutionary thoughtLogicMetaphysicsPseudoscienceRelationship between religion and scienceRhetoric of scienceSociology of scientific knowledgeSociology of scientific ignorance
Philosophers of science PlatoAristotleStoicismEpicureans
AverroesAvicennaRoger BaconWilliam of OckhamHugh of Saint VictorDominicus GundissalinusRobert Kilwardby
Francis BaconThomas HobbesRené DescartesGalileo GalileiPierre GassendiIsaac NewtonDavid Hume
Immanuel KantFriedrich SchellingWilliam WhewellAuguste ComteJohn Stuart MillHerbert SpencerWilhelm WundtCharles Sanders PeirceWilhelm WindelbandHenri PoincaréPierre DuhemRudolf SteinerKarl Pearson
Alfred North WhiteheadBertrand RussellAlbert EinsteinOtto NeurathC. D. BroadMichael PolanyiHans ReichenbachRudolf CarnapKarl PopperCarl Gustav HempelW. V. O. QuineThomas KuhnImre LakatosPaul FeyerabendJürgen HabermasIan HackingBas van FraassenLarry LaudanDaniel Dennett

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