Understanding the evolutionary role of environmentally induced phenotypic variation (i.e., plasticity) is an important issue in developmental evolution. A major physiological response to environmental change is cellular stress, which is counteracted by generic stress reactions detoxifying the cell. A model, stress‐induced evolutionary innovation (SIEI), whereby ancestral stress reactions and their corresponding pathways can be transformed into novel structural components of body plans, such as new cell types, is described. Previous findings suggest that the cell differentiation cascade of a cell type (...) critical to pregnancy in humans, the decidual stromal cell, evolved from a cellular stress reaction. It is hypothesized that the stress reaction in these cells was elicited ancestrally via inflammation caused by embryo attachment. The present study proposes that SIEI is a distinct form of plasticity‐based evolutionary change leading to the origin of novel structures rather than adaptive transformation of pre‐existing characters. (shrink)

It is shown that the Magidor forcing to collapse the cofinality of a measurable cardinal that carries a length \ sequence of normal ultrafilters, increasing in the Mitchell order, to \, is subcomplete.

For an ordinal \, I introduce a variant of the notion of subcompleteness of a forcing poset, which I call \-subcompleteness, and show that this class of forcings enjoys some closure properties that the original class of subcomplete forcings does not seem to have: factors of \-subcomplete forcings are \-subcomplete, and if \ and \ are forcing-equivalent notions, then \ is \-subcomplete iff \ is. I formulate a Two Step Theorem for \-subcompleteness and prove an RCS iteration theorem for \-subcompleteness (...) which is slightly less restrictive than the original one, in that its formulation is more careful about the amount of collapsing necessary. Finally, I show that an adequate degree of \-subcompleteness follows from the \-distributivity of a forcing, for \. (shrink)

This paper examines the ongoing challenges of interdisciplinary collaboration in Machine Ethics (ME), particularly the integration of ethical decision-making capacities into AI systems. Despite increasing demands for ethical AI, ethicists often remain on the sidelines, contributing primarily to metaethical discussions without directly influencing the development of moral machines. This paper revisits concerns highlighted by Tolmeijer et al. (2020), who identified the pitfall that computer scientists may misinterpret ethical theories without philosophical input. Using the MACHIAVELLI moral benchmark and the Delphi artificial (...) moral agent as case studies, we analyze how these challenges persist. Our analysis indicates that the creators of MACHIAVELLI and Delphi “copy” ethical concepts and embed them in LLMs without questioning or challenging these concepts themselves sufficiently. If an ethical concept causes friction with the computer code, they only reduce and simplify the ethical concept in order to stay as close as possible to the original. We propose that ME should expand its focus to include both interdisciplinary efforts that embed existing ethical work into AI, and transdisciplinary research that fosters new interpretations of ethical concepts. Interdisciplinary and transdisciplinary approaches are crucial for creating AI systems that are not only effective but also socially responsible. To enhance collaboration between ethicists and computer scientists, we recommend the use of Socratic Dialogue as a methodological tool, promoting deeper understanding of key terms and more effective integration of ethics in AI development. (shrink)

Ehrenfeucht’s lemma asserts that whenever one element of a model of Peano arithmetic is definable from another, they satisfy different types. We consider here the analogue of Ehrenfeucht’s lemma for models of set theory. The original argument applies directly to the ordinal-definable elements of any model of set theory, and, in particular, Ehrenfeucht’s lemma holds fully for models of set theory satisfying V=HOD. We show that the lemma fails in the forcing extension of the universe by adding a Cohen real. (...) We go on to formulate a scheme of natural parametric generalizations of Ehrenfeucht’s lemma, namely, the principles of the form EL, which asserts that P-definability from A implies Q-discernibility. We also consider various analogues of Ehrenfeucht’s lemma obtained by using algebraicity in place of definability, where a set b is algebraic in a if it is a member of a finite set definable from a. Ehrenfeucht’s lemma holds for the ordinal-algebraic sets, we prove, if and only if the ordinal-algebraic and ordinal-definable sets coincide. Using a similar analysis, we answer two open questions posed earlier by the third author and C. Leahy, showing that algebraicity and definability need not coincide in models of set theory and the internal and external notions of being ordinal algebraic need not coincide. (shrink)

I analyze the hierarchies of the bounded and the weak bounded forcing axioms, with a focus on their versions for the class of subcomplete forcings, in terms of implications and consistency strengths. For the weak hierarchy, I provide level-by-level equiconsistencies with an appropriate hierarchy of partially remarkable cardinals. I also show that the subcomplete forcing axiom implies Larson’s ordinal reflection principle atω2, and that its effect on the failure of weak squares is very similar to that of Martin’s Maximum.

l investigate versions of the Maximality Principles for the classes of forcings which are <κ-closed. <κ-directed-closed, or of the form Col (κ. <Λ). These principles come in many variants, depending on the parameters which are allowed. I shall write MPΓ(A) for the maximality principle for forcings in Γ, with parameters from A. The main results of this paper are: • The principles have many consequences, such as <κ-closed-generic $\Sigma _{2}^{1}(H_{\kappa})$ absoluteness, and imply. e.g., that ◇κ holds. I give an application (...) to the automorphism tower problem, showing that there are Souslin trees which are able to realize any equivalence relation, and hence that there are groups whose automorphism tower is highly sensitive to forcing. • The principles can be separated into a hierarchy which is strict, for many κ. • Some of the principles can be combined, in the sense that they can hold at many different κ simultaneously. The possibilities of combining the principles are limited, though: While it is consistent that MP<κ-closed(HκT) holds at all regular κ below any fixed α. the "global" maximality principle, stating that MP<κ-closed(Hκ ∪ {κ}) holds at every regular κ. is inconsistent. In contrast to this, it is equiconsistent with ZFC that the maximality principle for directed-closed forcings without any parameters holds at every regular cardinal. It is also consistent that every local statement with parameters from HκT that's provably <κ-closed-forceably necessary is true, for all regular κ. (shrink)

This book addresses the endangerment of children’s bodies in affluent societies. Bodily integrity is an important part of a child’s physical and mental well-being, but it can also be violated through various threats during childhood; not only affecting physical health but also causing mental damage and leading to distortions in the development of the self. The authors give an account of three areas, which present different serious dangers: (1) body and eating, (2) body and sexuality, and (3) body and violence. (...) Through an in-depth examination of the available theoretical and empirical knowledge, as well as a thorough ethical analysis, the central injustices in the mentioned areas are identified and the agents with responsibilities towards children displayed. The authors conclude by providing invaluable insight into the necessity of an ethical basis for policies to safeguard children and their bodies. (shrink)

I analyze the hierarchies of the bounded resurrection axioms and their “virtual” versions, the virtual bounded resurrection axioms, for several classes of forcings. I analyze these axioms in terms of implications and consistency strengths. For the virtual hierarchies, I provide level-by-level equiconsistencies with an appropriate hierarchy of virtual partially super-extendible cardinals. I show that the boldface resurrection axioms for subcomplete or countably closed forcing imply the failure of Todorčević’s square at the appropriate level. I also establish connections between these hierarchies (...) and the hierarchies of bounded and weak bounded forcing axioms. (shrink)

It is shown that the boldface maximality principle for subcomplete forcing,, together with the assumption that the universe has only set many grounds, implies the existence of a well‐ordering of definable without parameters. The same conclusion follows from, assuming there is no inner model with an inaccessible limit of measurable cardinals. Similarly, the bounded subcomplete forcing axiom, together with the assumption that does not exist, for some, implies the existence of a well‐ordering of which is Δ1‐definable without parameters, and ‐definable (...) using a subset of ω1 as a parameter. This well‐order is in. Enhanced versions of bounded forcing axioms are introduced that are strong enough to have the implications of mentioned above, and along the way, a bounded forcing axiom for countably closed forcing is proposed. (shrink)

Name der Zeitschrift: Deutsche Zeitschrift für Philosophie Jahrgang: 65 Heft: 4 Seiten: 798-806.

In the analysis of the blurry $$\textsf{HOD}$$ hierarchy, one of the fundamental concepts is that of a leap, and it turned out that critical leaps are of particular interest. A critical leap is a leap which is the cardinal successor of a singular strong limit cardinal. Such a leap is sudden if its cardinal predecessor is not a leap, and otherwise, it is smooth. In prior work, I showed that the existence of a sudden critical leap is equiconsistent with the (...) existence of a measurable cardinal. Here, I show that if the cofinality of the cardinal predecessor of a sudden critical leap is required to be uncountable, the consistency strength increases considerably. I also show that when focusing on critical leaps whose cardinal predecessors have uncountable cofinality, the consistency strength of a smooth critical leap is much lower than that of a sudden critical leap. Finally, I observe that in contrast to the countable cofinality setting, $$\aleph _{\omega _1+1}$$, e.g., cannot be a sudden critical leap. (shrink)

A highly rigid Souslin tree T is constructed such that forcing with T turns T into a Kurepa tree. Club versions of previously known degrees of rigidity are introduced, as follows: for a rigidity property P, a tree T is said to have property P on clubs if for every club set C (containing 0), the restriction of T to levels in C has property P. The relationships between these rigidity properties for Souslin trees are investigated, and some open questions (...) are stated. (shrink)

Obesity and poverty in childhood are widely studied phenomena and despite mixed results, some findings are without doubt: they come with various experiences of mental, physical and social harm, have therefore negative effects on the well-being of children, and they intersect in relation with race, class and gender. In this contribution we analyze child obesity and poverty from a philosophical social justice perspective, which has, to a large extent, so far neglected this topic. We show how they compromise social justice (...) and argue that there is an obligation to implement structural changes to assist the affected children and their families. However, we make also clear that such interventions must not happen in accordance to the current neoliberal fitness and health ideology and its related narrow individualism. (shrink)

Examining relativistic quantum field theory we claim that its description of subnuclear phenomena can be understood most adequately from a semiotic point of view. The paper starts off with a concise and non-technical outline of the firmly based aspects of relativistic quantum field theories. The particular methods, by which these different aspects have to be accessed, can be described as distinct facets of quantum field theory. They differ with respect to the relation between quantum fields and associated particles, and, as (...) we shall argue, should be interpreted as complementary (semiotic) codes. Viewing physical theories as symbolic constructions already came to the fore in the middle of the nineteenth century with the emancipation of the classical theory of the electromagnetic field from mechanics; most notably, as we will point out, with the work of Helmholtz, Hertz, Poincaré, and later on Weyl. Since the epistemological questions posed there are heightened with regard to quantum field theory, we considerably widen their approach and relate it to recent discussions in the philosophy of science, like structural realism and quasi-autonomous domains. (shrink)

We extend the results of Hamkins and Thomas concerning the malleability of automorphism tower heights of groups by forcing. We show that any reasonable sequence of ordinals can be realized as the automorphism tower heights of a certain group in consecutive forcing extensions or ground models, as desired. For example, it is possible to increase the height of the automorphism tower by passing to a forcing extension, then increase it further by passing to a ground model, and then decrease it (...) by passing to a further forcing extension, and so on, transfinitely. We make sense of the limit models occurring in such a sequence of models. At limit stages, the automorphism tower height will always be 1. (shrink)

In his essay the author draws attention to two 16th century humanists who engaged in the debate on Cicero the Man. In 1534, Ortensio Lando, a man of letters, published Cicero relegatus & Cicero revocatus, which was a collection of objections to Cicero’s character and habits brought forward in an imaginary conversation, as well as of arguments in his defence proposed in an equally fictitious public hearing, thus producing an apparent equilibrium. Lando, however, did not leave us guessing about his (...) meaning, but gave us hints about his own attitude to Cicero. In 1537, Sebastiano Corrado, an editor and commentator of various Ciceronian writings, published In M. T. Ciceronem Quaestura, a collection of textual emendations to his œuvres. In order to make it more attractive reading, he wrote it in dialogue form and called the readings he approved of, ‘gold coins’, those he rejected, ‘false coins’, thus building a stock of allegedly reliable readings. The coin metaphor recurred in Corrado’s Egnatius, sive Quaestura which was an attempt to lay, in form of dialogue, the foundations of a reliable biography of Cicero. Here three scholars discuss all the information provided by Cicero himself, his contemporaries and later sources on his life and work. Information they approve of is treasured as gold coin, the rest is rejected as false coin. It turns out, however, that Corrado was strongly prejudiced against Greek sources shedding an unfavourable light on Cicero. The result was an apology rather than a biography of Cicero. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Creativity and the Context of NoveltyPete A. Y. GunterAn article might have many virtues: breadth, novel perspective, conceptual background, to name a few. The strongest virtue of Professor Crosby's article is in the sharpening of arguments. In both his book, Novelty, and in the present article, he sharpens arguments which surround the concepts of determinism, novelty, and freedom. The end result is increased clarity; it is also, or so (...) it seems to this writer, the increased plausibility of arguments for novelty and indeterminism.I.It has often been argued that strict determinism (henceforth, determinism) has paradoxical implications. Thus William James protests that it leads inescapably to a "Block Universe": one in which everything is given at once—past, present, and future. In such a world, Crosby points out, nothing can happen at all. But Crosby adds to this a second, crucial point. If determinism is true, he insists, we must give up not only the belief that anything actually happens but also the commonsense belief that cause precedes effect. This result of strict determinism has not been stressed by either its opponents or its proponents.Quite probably, those who have argued for determinism have not reflected on the unpalatable idea that cause does not precede effect. Our ordinary experience exhibits the billiard ball falling into the side pocket after we have hit it with the cue stick. If we dive into a swimming pool, we enter the water dry and then become wet. And, the splash occurs after we separate ourselves from the board. Determinism, however useful in helping us to bring order out of our experience, radically conflicts with fundamental features in nature that lead us to think and examine cause and effect to begin with.There is another respect in which Crosby sharpens our assumptions. Ordinarily [End Page 60] we think of novelty and causality as contradictories. In fact, Crosby insists, they are correlatives. Neither is reducible to the other, nor is either alternative prior to the other. The two together constitute a primordial feature of the universe, such that where in some contexts indeterminism is reduced to a minimum, perhaps an infinitesimal, in others (presumably those in which creativity plays a major role) causality is reduced to a minimum and novelty predominates. Hence philosophy is not saddled with the task of trying to show how novelty can possibly find a place in an exclusively deterministic world. Novelty and determinism are, from the beginning, both present throughout.This viewpoint, if accepted, would obviate any attempt to graft indeterminism into a deterministic universe, so to speak, from without. It would also tend to dissolve the dualisms foisted on us by Descartes and, in another way, by Kant, which radically separate mind (or free will) from matter (or, in Kant's case, "phenomena") on the grounds that the former contains novelty and the latter does not. In Crosby's view some element of novelty is already present in matter. Equally, in his view, "mind" in many, perhaps most, contexts contains a strong element of determinism.There is still a further way of taking Crosby's arguments. It is this. Strict determinists must, he shows, hold that the universe is timeless. Past, present, and future coexist and, literally, nothing happens. It then follows that if one accepts the reality of motion, growth, and dissolution in the world, then in doing so one has decreed the falsehood of strict determinism. It does not (and on Crosby's grounds cannot) follow that there is no determinism in nature. There must, on his grounds, be degrees of causal determinism. But there must also be real novelty. One thus has a transcendental argument, beginning from the simple acceptance of real mobility in the world. That is, "If there is real transformation in the world, then strict determinism must be wrong. There is real transformation in the world. Therefore strict determinism must be wrong." This would make life very hard for the strict determinist, for whom the slightest lapse into a commonsense acceptance of the restless mobility of nature entails the denial of his or her basic thesis.A further argument of Crosby's, however, gives me difficulties. He argues that strict determinism... (shrink)

We prove that there are groups in the constructible universe whose automorphism towers are highly malleable by forcing. This is a consequence of the fact that, under a suitable diamond hypothesis, there are sufficiently many highly rigid non-isomorphic Souslin trees whose isomorphism relation can be precisely controlled by forcing.

Theories of perception and of memory are closely allied. The binding problem (which considers how bits of perception are reassembled by the brain) leads to neurophysiological subjectivism. This could be outflanked by arguing with Bergson that perceiving consciousness is out in the world. Thus the brain would bind only behavioral “maps.” In turn, consciousness would retain our personal pasts. Such personal (episodic) memories both help us to recognize present objects and to perform creative acts. Memory, although retentive, is also creative. (...) This is important in rethinking biological and evolutionary memory. (shrink)

Based on over twenty years of empirical and intellectual work about knowledge production in the field of educational administration, I examine the origins and development of the canon, methodologies and knowledge workers in England. I focus on the field as being primarily concerned with professional activity and how and why this was established from the 1960s, and the way knowledge workers have variously positioned themselves over time and in context. Using a case study of knowledge production at the time of (...) the New Labour governments (1997—2010) I show how the emphasis on activity has left the field vulnerable to colonisation by markets and private interests, but how policy studies continues not only to reveal this but also to provide a model for how engagement with the social sciences can be productive. (shrink)

1. Jugendschriften 1835-1841. Mit einem Essay "Zum Verständnis der Texte," Erläuterungen und Bibliographie hrsg. von G. Hillmann. DM 3.80 (GDB 66-A49-92)--2. Pariser Manuskripte 1844.--3. Der Mensch in Arbeit und Kooperation (Aus den Grundrissen der Kritik der politischen Ökonomie, 1857/58).