This book, provides a critical approach to all major logical paradoxes: from ancient to contemporary ones. There are four key aims of the book: 1. Providing systematic and historical survey of different approaches – solutions of the most prominent paradoxes discussed in the logical and philosophical literature. 2. Introducing original solutions of major paradoxes like: Liar paradox, Protagoras paradox, an unexpected examination paradox, stone paradox, crocodile, Newcomb paradox. 3. Explaining the far-reaching significance of paradoxes of vagueness and change for philosophy (...) and ontology. 4. Proposing a novel, well justified and, as it seems, natural classification of paradoxes. (shrink)

There is no need to introduce Gottfried Wilhelm Leibniz, a great philosopher, theologian, diplomat, creator of the infinitesimal calculus and founder of the Academy of Sciences in Berlin. He also planned the development of the so-called Lingua characteristica. Literally taken, the name of the language means a language of letters, a graphic language, also called a characteristica universalis. It was meant to be a way of expressing meanings, as modeled after methods used in arithmetic and geometry and having unusual properties.

The formal principle of inconsistency in logic, in the form in which it comes from Aristotle, asserts that two contradictory judgments are not both true. Since the 20th century logic has progressed towards ever higher formality, it might be more suitable to say that inconsistent sentences, rather than judgments, cannot be both true.1 The universally accepted and lectured classical calculus of sentences2 adopts this principle without reservations. Some of the more recent logical systems are limiting the scope of its applicability, (...) and also the natural language in which we daily express our judgments and inferences accepts in some cases a simultaneous occurrence of contradictory sentences. This text sets out to present a brief and simplified outline of this state of affairs. The systems of logic that accept inconsistencies and the related issues concerning natural language will be presented against the background of classical logic. (shrink)

The paper assumes that education is part of the process of discursive construction of society. The theoretical framework on which this argument is based includes Ernesto Laclau’s theory of the “ontological impossibility and political necessity of society”, and the role discourse and empty signifiers play in the establishment of political identities. Laclau’s theory is supplemented here by ideas of Derrida, Lacan, Žižek and Marx, and by other traits in contemporary semiotics that relate to the notion of “the void” in semantic (...) systems. My claim is that empty signifiers, crucial to the production of the totality of society, are discursively produced, among others, in pedagogical debates. This is illustrated by one historical example (Rouuseau), which gives ground for more contemporary analyses, and on the basis of the present economic discourse of educating and the idea of “knowledge society”. The main conclusion is that education, in contemporary discourse of learning, becomes a neurotic symptom of the lack of overt domination in social relations. (shrink)

Kategoria struktur metodologicznych wprowadzona przez Zygmunta Hajduka jest kategorią nową, nieużywaną dotąd w rozważaniach metodologicznych i niemającą w nich ugruntowanego miejsca. Dlatego można zapytać o funkcję, jaką miałaby ona pełnić w metodologii nauk, oraz ojej przydatność jako ogólnego pojęcia metodologicznego. Zasadnicze pytanie, jakie stawiam to: czy wprowadzony przez Z. Hajduka termin struktury metodologiczne może służyć jako najogólniejsza kategoria wyznaczająca przedmiot badań metodologii nauk? Odpowiadając negatywnie na to pytanie, przedstawiam argumenty, jakie przemawiają przeciwko używaniu pojęcia struktur metodologicznych w ten sposób. Moja (...) argumentacja przebiega w następujący sposób. Przywołując funkcjonujące w metodologii nauk zasadnicze sposoby rozumienia nauki, ujęcie metodologii nauk wyznaczone przez Szkołę lwowsko-warszawską i tradycję metodologiczną KUL, będącą jej kontynuacją, typy metodologii, współczesne anglosaskie ujęcia filozofii nauki oraz rozumienie analizy metodologicznej, próbuję wskazać w miarę całościową mapę kategorii metodologicznych wyznaczających przedmiot badań metodologii nauk. Następnie odnoszę do niej kategorię struktur metodologicznych jako wyznaczającą, moim zdaniem zbyt wąsko, przedmiot badań metodologii nauk i przeprowadzam krytykę pojęcia struktur metodologicznych jako najogólniejszej kategorii wyznaczającej przedmiot badań metodologii nauk. Wskazuję także na niekompletność zaproponowanej przez Z. Hajduka listy struktur metodologicznych, którymi zajmuje się metodologia nauk. (shrink)

The paper provides an analysis of two traditionally accepted distinctions between nominal and real definitions. The historical background is Kazimierz Ajdukiewicz’s conceptions of definitions as well as remarks by other members of the Lvov-Warsaw School of philosophy. The aim of the paper is to show that the analysed distinction, at least in Ajdukiewicz’s version, cannot be sustained.

In British and American anthropological literature, the ethnology of Central and Eastern European countries has shared in the plight of descriptions of this part of the world: it was seen as exotic, foreign, remote, a backwater, focused on sideline problems and situated on the periphery of this field of science. This state of affairs has been the case since at least the beginning of the Cold War as the descriptions of the national characters of Eastern Bloc communities, drafted by American (...) scholars. The ethnography of these countries was automatically aligned with the same categories of description which were applied to the characteristics of these communities. This was, in part, an effect of entirely different research traditions in the subject matter, objectives and methods of these remote parts of the science. The differences of ’cultural wholes’ did have a decisive impact on the image of ethnology. Like all these communities, Polish ethnology was perceived as a homogeneous whole, which it never was. (shrink)