Panu Raatikainen

The new externalist picture of natural kind terms due to Kripke, Putnam, and others has become quite popular in philosophy. Many philosophers of science have remained sceptical. Häggqvist and Wikforss have recently criticised this view severely. They contend it depends essentially on a micro-essentialist view of natural kinds that is widely rejected among philosophers of science, and that a scientifically reasonable metaphysics entails the resurrection of some version of descriptivism. It is argued in this paper that the situation is not quite as dark for the new theory of reference as many critics suggest. There are several distinct questions here which should not be conflated and ought to be dealt with one by one. Descriptivism remains arguably problematic.

Here the relationship between understanding and knowledge of meaning is discussed from two different perspectives: that of Dummettian semantic anti-realism and that of the semantic externalism of Putnam and others. The question addressed is whether or not the truth of semantic externalism would undermine a central premise in one of Dummetts key arguments for anti-realism, insofar as Dummetts premise involves an assumption about the transparency of meaning and semantic externalism is often taken to undermine such transparency. Several notions of transparency and conveyability of meaning are distinguished and it is argued that, though the Dummettian argument for anti-realism presupposes only a weak connection between knowledge of meaning and understanding, even this much is not trivially true in light of semantic externalism, and that semantic externalism, if true, would thus represent a reason for rejecting the crucial assumption on which the Dummettian argument depends.

The essay exa­mines the views expressed in von Wright's Explanation and Understanding (1971) on human action and historical events from the perspective of the recent philosophy of science. Connecting causal explanation tightly to covering laws, as von Wright does, is found to be problematic, and his Logical connection argument invalid. On the other hand, von Wright's sketched theory of causation which is based on the concept of manipulation proves to be on the right track in light of current knowledge. From this perspective, however, there is no obstacle for explaining human action causally. This is illustrated with two examples from historical research. Finally, von Wright's idea that a complete account of the historical past is never achieved, because the past can always be re-evaluated, is briefly discussed.

Ilkka Niiniluoto, a distinguished philosopher of science, has been a tirelesspokesman for scientific realism and reason more generally. Trained in the tradition of the Finnish school of inductive logic he has refined the notion of truthlikeness (verisimilitude) to make the realist idea scientific progress mathematically exact. Niiniluotos main technical works are included in his books Is Science Progressive? (1984) and Truthlikeness (1987), but his most recent general defense of scientific realism culminated in his Critical Scientific Realism (1999). Niiniluoto is, since 1981, Professor of Theoretical Philosophy at the University of Helsinki, and since 2003 the Rector of the University. He has for a long time been one of the most prominent public intellectuals in Finland. This Festschrift brings about a selection of philosophical essays on Niiniluotos philosophy by prominent member of the international community. The contributions are grouped around three themes. The first ones deal with philosophy of logic, the philosophy of language, and the philosophy of mathematics, and the second group consists of papers on induction, truthlikeness, and scientific progress. The third part collects essays on the history of logical empiricism, the ontology of social groups, and the dispute between theism and atheism. This book is a tribute to Ilkka Niiniluoto on his 60th birthday, and it also contains Niiniluoto's replies to comments, queries and criticisms.

Philosopher’s judgements on the philosophical value of Tarski’s contributions to the theory of truth have varied. For example Karl Popper, Rudolf Carnap, and Donald Davidson have, in their different ways, celebrated Tarski’s achievements and have been enthusiastic about their philosophical relevance. Hilary Putnam, on the other hand, pronounces that “[a]s a philosophical account of truth, Tarski’s theory fails as badly as it is possible for an account to fail.” Putnam has several alleged reasons for his dissatisfaction,1 but one of them, the one I call the modal objection (cf. Raatikainen 2003), has been particularly influential. In fact, very similar objections have been presented over and over again in the literature. Already in 1954, Arthur Pap had criticized Tarski’s account with a similar argument (Pap 1954). Moreover, both Scott Soames (1984) and John Etchemendy (1988) use, with an explicit reference to Putnam, similar modal arguments in relation to Tarski. Richard Heck (1997), too, shows some sympathy for such considerations. Simon Blackburn (1984, Ch. 8) has put forward a related argument against Tarski. Recently, Marian David has criticized Tarski’s truth definition with an analogous argument as well (David 2004, p. 389-390).2 This line of argument is thus apparently one of the most influential critiques of Tarski. It is certainly worthy of serious attention. Nevertheless, I shall argue that, given closer scrutiny, it does not present such an acute problem for the Tarskian approach to truth as many philosophers think. But I also believe that it is important to understand clearly why this is so. Moreover, I think that a careful consideration of the issue illuminates certain important but somewhat neglected aspects of the Tarskian approach.

Englantilaissyntyinen, pitkään Yhdysvalloissa vaikuttanut ja täällä hetkellä New Yorkin maineikkaan Columbia-yliopiston filosofian professorina toimiva Philip Kitcher (s. 1947) on vakiinnuttanut paikkansa tieteenfilosofien kirkkaimmassa kärjessä. Uransa alkuaikoina hän työskenteli lähinnä matematiikanfilosofian parissa, mutta sittemmin hänen tuotantonsa painopiste on ollut yleisessä tieteenfilosofiassa ja biologianfilosofiassa. Hänen teoksensa The Advancement of Science (Oxford University Press, 1993) on viimeaikaisen yleisen tieteenfilosofian perusteos. Kitcherin sosiobiologian heikkoudet ja ongelmat perinpohjaisesti osoittava Vaulting Ambition: Sociobiology and the Quest for Human Nature (MIT Press, 1985) on jo aihepiirinsä klassikko. Kitcher on myös mm. puolustanut evoluutioteoriaa fundamentalistikristillisiä kreationisteja vastaan (Abusing Science: The Case Against Creationism. (MIT Press, 1982)) ja tarkastellut bioteknisen vallankumouksen ja geenitutkimuksen mukanaan tuomia eettisiä ongelmia (The Lives to Come: The Genetic Revolution and Human Possibilities (Simon.and Schuster [U.S.], Penguin..

The minimalist view of truth endorsed by Paul Horwich denies that truth has any underlying nature. According to minimalism, the truth predicate ‘exists solely for the sake of a certain logical need’; ‘the function of the truth predicate is to enable the explicit formulation of schematic generalizations’. Horwich proposes that all there really is to truth follows from the equivalence schema: The proposition that p is true iff p, or, using Horwich’s notation, ·pÒ is true ´ p. The (unproblematic) instances of the schema form ‘the minimal theory of truth’. Horwich claims that all the facts involving truth can be explained on the basis of the minimal theory. However, it has been pointed out, e.g. by Gupta (1993), that the minimal theory is too weak to entail any general facts about truth, e.g. the fact that..

Toisaalta ennennäkemätön äärettömien joukko-opillisten menetelmien hyödyntäminen sekä toisaalta epäilyt niiden hyväksyttävyydestä ja halu oikeuttaa niiden käyttö ovat ratkaisevasti muovanneet vuosisatamme matematiikkaa ja logiikkaa. Tämän kehityksen vaikutus nykyajan filosofiaan on myös ollut valtaisa; merkittävää osaa siitä ei voi edes ymmärtää tuntematta sen yhteyttä tähän matematiikan ja logiikan vallankumoukseen. Lähestymistapoja, jotka tavalla tai toisella hyväksyvät äärettömän matematiikan ja perinteisten logiikan sääntöjen (erityisesti kolmannen poissuljetun lain) soveltamisen myös sen piirissä, on tullut tavaksi kutsua klassiseksi matematiikaksi ja logiikaksi erotuksena nämä hylkäävistä radikaaleista intuitionistisista ja konstruktivistisista opeista.

It has sometimes been suggested that the so-called new theory of reference (NTR) would provide an alternative picture of meaning and reference which avoids the unwelcome consequences of the meaning-variance thesis and incommesurability. However, numerous philosophers of science have been quite critical towards the idea and NTR in general. It is argued that many of them have an over-simplified and, in part, mistaken understanding of what NTR amounts to. It is submitted that NTR, when correctly understood, can be an important ingredient in the realist toolkit for defending the rationality of science.

Storrs McCall continues the tradition of Lucas and Penrose in an attempt to refute mechanism by appealing to Gödel’s incompleteness theorem. That is, McCall argues that Gödel’s theorem “reveals a sharp dividing line between human and machine thinking”. According to McCall, “[h]uman beings are familiar with the distinction between truth and theoremhood, but Turing machines cannot look beyond their own output”. However, although McCall’s argumentation is slightly more sophisticated than the earlier Gödelian anti-mechanist arguments, in the end it fails badly, as it is at odds with the logical facts

Viime vuosina ihmistieteiden kentässä on saanut osakseen paljon huomiota uusi lähestymistapa, jota kutsutaan ”evoluutiopsykologiaksi”. Sen piiristä on esimerkiksi väitetty, että evoluutio on muokannut meidän parinvalintamieltymyksiämme niin, että miehillä on taipumus tuntea vetoa lisääntymiskykyisiltä näyttäviin nuoriin naisiin, pyrkiä parittelemaan aina tilaisuuden tullen mahdollisimman monien naisten kanssa ja olla mustasukkaisia, kun taas naiset ovat taipuvaisia mieltymään iäkkäämpiin miehiin, joilla on valtaa ja resursseja. Luonnonvalinnalla on pyritty myös selittämään mm. raiskauksia.

Kiinnostukseni kohteena seuraavassa on tietty suosittu ”intellektualistinen” käsitys kielen ja käsitteiden oppimisesta ja ymmärtämisestä. Käsitys on sinällään hyvin periteinen, ja voidaan väittää, että se on ollut ainakin piilevästi sisäänrakennettuna useiden uuden ajan filosofien teorioissa. Jätän tämän väitteen tarkemman erittelyn kuitenkin filosofian historioitsijoiden selvitettäväksi, ja keskityn seuraavassa käsityksen enemmän tai vähemmän julkilausuttuihin ilmentymiin nykyajan filosofiassa. Se on vaikuttanut monissa vaikutusvaltaisissa lähestymistavoissa kieleen, merkitykseen ja mieleen.