In this paper, we complement proximate or ‘how’ explanations for the origins of language, broadening our perspective to include fitness-consequences explanations, i.e. ultimate, or ‘why’ explanations. We identify theplatform of trustas a fundamental prerequisite for the development of a language-like system of symbolic communication. The platform of trust is a social niche in which cheap but honest communication with non-kin is possible, because messages tend to be trusted as a default. We briefly consider the place of the platform of trust (...) on the road map as laid out in the Mirror System Hypothesis. We then turn to recent research on turn-taking in primates, which has been proposed as a precursor of the cooperative structuring of conversation in humans. We suggest, instead, that human turn-taking, in its full richness that makes it an interesting explanatory target, may only appear in a communicative system that is already founded on a community-wide, cooperative platform of trust. (shrink)

The set of design features developed by Charles Hockett in the 1950s and 1960s remains probably the most influential means of juxtaposing animal communication with human language. However, the general theoretical perspective of Hockett is largely incompatible with that of modern language evolution research. Consequently, we argue that his classificatory system—while useful for some descriptive purposes—is of very limited use as a theoretical framework for evolutionary linguistics. We see this incompatibility as related to the ontology of language, i.e. deriving from (...) Hockett’s interest in language as a product rather than a suite of sensorimotor, cognitive and social abilities that enable the use but also acquisition of language by biological creatures. After a reconstruction of Hockett’s views on design features, we raise two criticisms: focus on the means at the expense of content and focus on the code itself rather than the cognitive abilities of its users. Finally, referring to empirical data, we illustrate some of the problems resulting from Hockett’s approach by addressing three specific points—namely arbitrariness and semanticity, cultural transmission, and displacement—and show how the change of perspective allows to overcome those difficulties. (shrink)

In this paper we attempt to show that rhetoric plays an important role in economics as a science and in economy as a social system. Our task is rather demonstrative, but it aims at stripping away the illusion that economics has acquired a status equal to the natural sciences, in which there is no place for subjectivism and ambiguity. Economics belongs, after all, to the realm of the social sciences and as such it is subject to the limitations of human (...) cognition and understanding. We show that economics as a science is not free from employing sophisticated methods of persuasion and rhetoric. Next, we also try to demonstrate that rhetoric can be a useful tool in creating economic reality. It does not have influence on economic processes per se, but it is helpful in constructing an institutional architecture of the economy by influencing public opinion and decision makers. (shrink)

We prove that every analytic set in ω ω × ω ω with σ-bounded sections has a not σ-bounded closed free set. We show that this result is sharp. There exists a closed set with bounded sections which has no dominating analytic free set, and there exists a closed set with non-dominating sections which does not have a not σ-bounded analytic free set. Under projective determinacy analytic can be replaced in the above results by projective.

We study the structure of analytic ideals of subsets of the natural numbers. For example, we prove that for an analytic ideal I, either the ideal {X (Ω × Ω: En X ({0, 1,…,n} × Ω } is Rudin-Keisler below I, or I is very simply induced by a lower semicontinuous submeasure. Also, we show that the class of ideals induced in this manner by lsc submeasures coincides with Polishable ideals as well as analytic P-ideals. We study this class of (...) ideals and characterize, for example, when the ideals in it are Fσ or when they carry a locally compact group topology. We apply these results to Borel partial orders to rederive a theorem of Todorcevic and to Borel equivalence relations to answer a question of Kechris and Louveau. As another application we give a characterization of σ-ideals of μ-zero sets for Maharam submeasures μ on the Cantor set which is to a large extent analogous to a characterization of the meager ideal due to Kechris and the author. (shrink)

Nowadays, computers are in common use, both in experimental and theoretical research. It is worth considering if the implementation of a new, universal research tool has significantly changed the science of the end of 20th century. The crucial question which I will try to answer is if computers have revolutionized the scientific research. In order to find the answer, I will describe modern digitally aided science, taking into consideration the research conducted in the greatest elementary physics laboratory. Subsequently, I will (...) refer to the classic concept of scientific revolution proposed by Thomas S. Kuhn. Finally, I will answer the question related to digital revolution in science. (shrink)

A new approach to semantics, based on ordered Banach spaces, is proposed. The Banach spaces semantics arises as a generalization of the four particular cases: the Giles' approach to belief structures, its generalization to the non-Boolean case, and fuzzy extensions of Boolean as well as of non-Boolean semantics.

The paper presents an analysis of the ethical, political and economic aspects of human work within two Polish historical periods – the years of the People’s Republic of Poland and after 1989. The starting point for the analysis was the assumption that every time period, each age, leaves a mark on man’s work. Analysis of the People's Republic of Poland period gives an opportunity to consider human work understood as a duty and right of every human guaranteed by the Constitution (...) of 1952. Questioning the principles ruling the labour market by the ideologists of the People’s Republic of Poland and, as a consequence, the politicization of labour, resulted in the collapse of the work ethic. Work, as it was at that time a commonly available good, lost its value, regarded as the source of life satisfaction, and thus became ridiculed. After 1989, in relation to the de-politicization of the Polish labour market, the employee became active in searching for a job. The phenomenon of unemployment resulted in competition on the labour market and the employer was thus given the opportunity to freely select a group of employees. As a result, the employer became a distributor of a ‘rare commodity.’ That, in turn, led to the situation where the approach of employers towards employees turned into the employer's diktat. It is the employer who determines the conditions of employment, standards of work and place of work. A lack of alternative that many employees face often makes them accept the dictated conditions of work. What is more, in Poland we deal with the insufficiently developed participation of employees in managing the enterprises, which is an effect of breaking off the bilateral dependency of employee and employer. (shrink)

§1. Introduction. Ideals and filters of subsets of natural numbers have been studied by set theorists and topologists for a long time. There is a vast literature concerning various kinds of ultrafilters. There is also a substantial interest in nicely definable ideals—these by old results of Sierpiński are very far from being maximal— and the structure of such ideals will concern us in this announcement. In addition to being interesting in their own right, Borel and analytic ideals occur naturally in (...) the investigations of compact subsets of the space of all Baire class 1 functions on a Polish space, see [12, 18]. Also, certain objects associated with such ideals are of considerable interest and were quite extensively studied by several authors. Let us list here three examples; in all three of them I stands for an analytic or Borel ideal.1. The partial order induced by I on P: X ≥I Y iff X \ Y ϵ I and the partial order.2. Boolean algebras of the form P/I and their automorphisms.3. The equivalence relation associated with I: XEI Y iff X Δ ϵ I.In Section 4, we will have an opportunity to state some consequences of our results for equivalence relations as in 3. (shrink)

We show that each non-compact Polish group admits a continuous action on a Polish space with non-smooth orbit equivalence relation. We actually construct a free such action. Thus for a Polish group compactness is equivalent to all continuous free actions of this group being smooth. This answers a question of Kechris. We also establish results relating local compactness of the group with its inability to induce orbit equivalence relations not reducible to countable Borel equivalence relations. Generalizing a result of Hjorth, (...) we prove that each non-locally compact, that is, infinite dimensional, separable Banach space has a continuous action on a Polish space with non-Borel orbit equivalence relation, thus showing that this property characterizes non-local compactness among Banach spaces. (shrink)

We applaud Heintz & Scott-Phillips's guiding metaphor of “unleashing leashed expression,” and we value the unified explanation for the emergence of not only language, but also other forms of unleashed expression, such as multimodal communication. We are more critical of the authors' discussion of the selection pressures acting towards unleashed expression, which are proposed to hinge on partner choice ecology.

Informatycy zajmujący się problematyką algorytmów ewolucyjnych twierdzą, że miał miejsce transfer idei z biologii do informatyki, tzn. że ustalenia biologii ewolucyjnej stały się inspiracją do powstania tych algorytmów i że działają one analogicznie do procesów ewolucyjnych zachodzących w świecie przyrody. Jeśli jest tak faktycznie, to warto odpowiedzieć na pytanie, w jakim zakresie następuje przeniesienie ustaleń z biologii ewolucyjnej do działu informatyki zajmującego się algorytmami ewolucyjnymi. Zadanie to stanie się możliwe po uprzednim zreferowaniu sposobu działania algorytmów ewolucyjnych.

Wśród prekursorów nowoczesnej nauki o religii David Hume zajmuje szczególne miejsce. Znany jest bowiem nie tylko jako dociekliwy badacz racjonalności religii, należącej do kluczowych problemów filozofii religii, ale także badacz naturalnych podstaw religii, zaprezentowanych zwłaszcza w „Naturalnej historii religii”. Jednym z najważniejszych dokonań Hume’a jest wyraźne oddzielenie, a zarazem komplementarność, dwóch sposobów badania religii, z których jeden koncentruje się na racjach wierzeń religijnych, zaś drugi na przyczynach występowania określonych wierzeń i praktyk. W wystąpieniu swoim argumentuję, że Hume’owski sposób myślenia o (...) religii nie tylko stanowił ważny etap na drodze do nowoczesnej nauki o religii, ale również wykazuję, że ta ostatnia w znacznym stopniu inspirowała się i nadal inspiruje Hume’owską krytyką religii. (shrink)

The paper describes in detail the procedure of identification of the inner language and an inner logico of a physical theory. The procedure is a generalization of the original ideas of J. von Neuman and G. Birkhoff about quantum logic.

Wobec postępującego od lat procesu dyferencjacji nauk warto zadać pytanie o ich możliwą integrację. Problem ten przedstawiony zostanie na przykładzie kosmologii antropicznej. W pierwszej części artykułu opisane zostaną dwa podstawowe ujęcia kosmologii antropicznej, to znaczy mocna i słaba kosmologia antropiczna (kosmologia inflacyjna oraz kosmologia kwantowa). Następnie zostanie ona ukazana jako przykład projektu integracji nauk ewolucyjnych. W ostatniej części artykułu podjęta zostanie próba wykazania, że kosmologia antropiczna (w znaczeniu szerszym niż wcześniej opisana słaba i mocna kosmologia antropiczna) może stanowić paradygmatyczny przykład (...) nauki ewolucyjnej o najszerszym zakresie badawczym i spójnej metodzie badawczej, wspólnej dla wszystkich nauk ewolucyjnych. Będzie to zatem opis projektu badawczego, który jednoczy wszystkie nauki ewolucyjne. ------------------------- Zgłoszono: 18/04/2023. Zrecenzowano: 20/09/2023. Zaakceptowano do publikacji: 15/11/2023. (shrink)

We prove that for every family I of closed subsets of a Polish space each Σ 1 1 set can be covered by countably many members of I or else contains a nonempty Π 0 2 set which cannot be covered by countably many members of I. We prove an analogous result for κ-Souslin sets and show that if A ♯ exists for any $A \subset \omega^\omega$ , then the above result is true for Σ 1 2 sets. A theorem (...) of Martin is included stating that this result is also true for weakly homogeneously Souslin sets. As an application of our results we derive from them a general form of Hurewicz's theorem due to Kechris, Louveau, and Woodin and a theorem of Feng on the open covering axiom. Also some well-known theorems on finding "big" closed sets inside of "big" Σ 1 1 and Σ 1 2 sets are consequences of our results. (shrink)