Hay sufrimiento en el mundo, hay mal en el mundo. Existe evidencia de ambos. No todo sufrimiento parece ser con vistas a un bien mayor. Es decir, parece haber casos de mal gratuito o injustificado. El pasado 2 de febrero del 2024, observamos en Viña del Mar - Chile las trágicas consecuencias de un devastador incendio forestal, probablemente provocado intencionalmente por el ser humano. Ante escenarios de este tipo, el desafío epistémico para quienes creemos en Dios es preguntarnos si este (...) es un caso de mal innecesario y si, de ser así, tiene alguna implicancia para la creencia en Dios. En este escrito plantearé los riesgos de racionalizar el sufrimiento, sin que ello implique que la búsqueda de razones sobre el mismo (su explicación) derive en una justificación indirecta del mismo. En última instancia, se trata de distinguir entre evaluar las causas de un evento, la justificación del evento y la evaluación ética del mismo. (shrink)

El objetivo de esta investigación consiste en analizar el estatus de la retórica a partir de la filosofía de Emmanuel Levinas. Esto a propósito de las reflexiones sobre la ética y el lenguaje, en donde se instala la inquietud del rol que cumpliría la retórica –como un lenguaje dirigido a la persuasión– dentro de la dimensión de la ética levinasiana. En un primer acercamiento observamos que la retórica corresponde al lenguaje político de la violencia y la dominación, no obstante, buscaremos (...) mostrar que, finalmente, una interpretación amplia del talante de la retórica latina –a partir del ejercicio del “mover”– coincide con el mandato ético del “no matarás”. (shrink)

In light of social change and rapid technological improvement, "Cultural Heritage and Moral Obligations: A Philosophical Inquiry into Preservation and Innovation" sets out to investigate the ethical aspects of cultural heritage. This investigation explores the value of cultural legacy as a storehouse of human knowledge, identity, and community while recognising its enormous influence on the construction of both personal and societal narratives. It recognises the difficulties presented by the needs of development and the demands of respecting the past as it (...) makes its way through the conflict between innovation and preservation. The research study used smart PLS software and generated descriptive statistic, correlation coefficient, and the smart PLS Algorithm model between the cultural heritage and moral obligations. The research also describes the relation between preservation and innovation. Using meticulous scrutiny, it illuminates the ethical duties that are intrinsic to the conservation of cultural heritage, advocating for sophisticated comprehensions and moral structures that give precedence to inclusion, fairness, and justice. In the end, this investigation advocates for a future in which the diversity and complexity of human culture are honored, conserved, and treasured for all eternity, encouraging contemplation on our relationships with the past and our obligations to future generations. Overall, the research found that the philosophical investigation of "Cultural Heritage and Moral Obligations" provides a basis for tackling current issues and cultivating long-term strategies for cultural heritage innovation and preservation in a variety of domains and settings. Stakeholders may preserve the history of humanity for future generations and support the principles of inclusion, fairness, and justice by incorporating ethical concerns into decision-making processes. (shrink)

(1993). Integrating cooperation and conflict: Comments on Raymond Boudon's paper. International Studies in the Philosophy of Science: Vol. 7, No. 1, pp. 29-31.

The target article criticises neural-symbolic systems as inadequate for analogical reasoning and proposes a model of analogy as transformation (i.e., learning). We accept the importance of learning, but we argue that, instead of conflicting, integrated reasoning and learning would model analogy much more adequately. In this new perspective, modern neural-symbolic systems become the natural candidates for modelling analogy.

Las órdenes europeas de detención y entrega emitidas por los tribunales españoles con relación a los implicados en el intento de derogación de la Constitución en Cataluña en el año 2017 han supuesto una prueba para el instrumento. En este trabajo se analizan las razones por las que en los distintos países que han conocido del caso (Bélgica, Alemania, Reino Unido e Italia) no han sido ejecutadas, mostrando de esta forma en qué errores han incurrido las autoridades de estos países (...) y cómo influyen estos errores en el deterioro de la confianza mutua entre los Estados miembros de la UE. (shrink)

The aim of this paper is to connect the COVID-19 pandemic with philosophical elements taken from Jean-Jacques Rousseau. Three main points will be covered: the philosopher and the isolation; the nomenclature on the idea of social isolation; and the way in which the socio-political organization of a certain community is essential in order to obtain success or face failure in situations classified as catastrophic.

Yet precisely because the book is so foundational, if we want to understand Strauss’s notoriously careful and complex thinking in these essays, we must also consider them just as Strauss treated philosophers of the past: on their own ...

Platón de Atenas, sin discusión uno de los grandes maestros de Occidente, y probablemente el verdadero fundador de la filosofía. Sus ideas encontraron eco en sus discípulos, sobre todo Aristóteles, que pese a haber formado una nueva escuela, y haber externado algún juicio crítico, fue un gran platónico. La influencia de Platón se siente a lo largo de la Edad Media y de la Modernidad, y aún la filosofía contemporánea se ve compelida a volver sobre sus pasos, a fin situar (...) correctamente sus temas y problemas. Imbuido de un sentimiento de respeto por la obra de Platón, visité la mayoría de sus diálogos, y consulté parte de la recepción hecha a la obra platónica, a fin forjarme una idea lo más acabada posible de la vida, la obra y las ideas de filósofo ateniense, discípulo de Sócrates, que legó a Occidente el primer gran sistema filosófico. He aquí el resultado que lo juzguen los lectores. (shrink)

Cognitive research on metaphoric concepts of time has focused on differences between moving Ego and moving time models, but even more basic is the contrast between Ego‐ and temporal‐reference‐point models. Dynamic models appear to be quasi‐universal cross‐culturally, as does the generalization that in Ego‐reference‐point models, FUTURE IS IN FRONT OF EGO and PAST IS IN BACK OF EGO. The Aymara language instead has a major static model of time wherein FUTURE IS BEHIND EGO and PAST IS IN FRONT OF EGO; (...) linguistic and gestural data give strong confirmation of this unusual culture‐specific cognitive pattern. Gestural data provide crucial information unavailable to purely linguistic analysis, suggesting that when investigating conceptual systems both forms of expression should be analyzed complementarily. Important issues in embodied cognition are raised: how fully shared are bodily grounded motivations for universal cognitive patterns, what makes a rare pattern emerge, and what are the cultural entailments of such patterns? (shrink)

Autonomy has been central to moral and political philosophy for millenia, and has been positioned as a critical aspect of both justice and wellbeing. Research in psychology supports this position, providing empirical evidence that autonomy is critical to motivation, personal growth and psychological wellness. Responsible AI will require an understanding of, and ability to effectively design for, human autonomy (rather than just machine autonomy) if it is to genuinely benefit humanity. Yet the effects on human autonomy of digital experiences are (...) neither straightforward nor consistent, and are complicated by commercial interests and tensions around compulsive overuse. This multi-layered reality requires an analysis that is itself multidimensional and that takes into account human experience at various levels of resolution. We borrow from HCI and psychological research to apply a model (“METUX”) that identifies six distinct spheres of technology experience. We demonstrate the value of the model for understanding human autonomy in a technology ethics context at multiple levels by applying it to the real-world case study of an AI-enhanced video recommender system. In the process we argue for the following three claims: 1) There are autonomy-related consequences to algorithms representing the interests of third parties, and they are not impartial and rational extensions of the self, as is often perceived; 2) Designing for autonomy is an ethical imperative critical to the future design of responsible AI; and 3) Autonomy-support must be analysed from at least six spheres of experience in order to approriately capture contradictory and downstream effects. (shrink)

Two systems of belief change based on paraconsistent logics are introduced in this article by means of AGM-like postulates. The first one, AGMp, is defined over any paraconsistent logic which extends classical logic such that the law of excluded middle holds w.r.t. the paraconsistent negation. The second one, AGMo , is specifically designed for paraconsistent logics known as Logics of Formal Inconsistency (LFIs), which have a formal consistency operator that allows to recover all the classical inferences. Besides the three usual (...) operations over belief sets, namely expansion, contraction and revision (which is obtained from contraction by the Levi identity), the underlying paraconsistent logic allows us to define additional operations involving (non-explosive) contradictions. Thus, it is defined external revision (which is obtained from contraction by the reverse Levi identity), consolidation and semi-revision, all of them over belief sets. It is worth noting that the latter operations, introduced by S. Hansson, involve the temporary acceptance of contradictory beliefs, and so they were originally defined only for belief bases. Unlike to previous proposals in the literature, only defined for specific paraconsistent logics, the present approach can be applied to a general class of paraconsistent logics which are supraclassical, thus preserving the spirit of AGM. Moreover, representation theorems w.r.t. constructions based on selection functions are obtained for all the operations. (shrink)

The Gongsun Longzi is often considered the only extant work of the Classical Chinese “School of Names”, an early intellectual tradition mainly concerned with logic and the philosophy of language. The Gongsun Longzi is a heterogeneous collection of five chapters that include short treatises and largely fictive dialogues between an anonymous persuader and his opponent, which typically revolve around a paradoxical claim. Its value as a testimony to Early Chinese philosophy, however, is somewhat controversial due to the intricate textual history (...) of the text and our limited knowledge about its intellectual backgrounds. This volume gathers contributions by leading specialists in the fields of Classical Chinese philosophy, philology, logic, and linguistics. Besides an overview of the scholarly literature on the topic and a detailed account of the reception of the text throughout time, it presents fresh insights into philological and philosophical problems raised by the Gongsun Longzi and other closely-related texts equally attributed to the “School of Names”. (shrink)

A recent issue of Topics in Cognitive Science featured 11 thoughtful commentaries responding to our article “What happened to cognitive science?” (Núñez et al., 2019). Here, we identify several themes that arose in those commentaries and respond to each. Crucial to understanding our original article is the fundamental distinction between multidisciplinary and interdisciplinary endeavors: Cognitive science began (and has stayed) as multidisciplinary but has failed to move on to form a cohesive interdisciplinary field. We clarify and elaborate our original argument (...) and reiterate the importance of a data‐driven evaluation of the current status of the field, which exhibits a marked disciplinary imbalance, a lack of a coherent conceptual core, and a striking absence of a consistent curriculum in the institutions that grant degrees in this domain. Half a century after the creation of cognitive science, it may now be a good time to revisit goals and visions for how to best approach the ever‐fascinating scientific study of the mind(s). (shrink)

The debate over Plato’s “ so called unwritten doctrines”, which he communicated only to a small circle of trusted disciples, has caused a stir among philosophers in recent decades. Rafael Ferber assumes a differentiated position in this controversy. He is convinced that the unwritten doctrines did exist, but that Plato, for reasons inherent in the process of gaining knowledge, was unable to communicate these doctrines even to his closest disciples. In this book, Ferber outlines the discussion and summarizes the (...) standpoints of greatest interest. Ever since Aristotle, we have known that Plato did not put his most important teachings into writing, but instead communicated them only orally to the inner circle of his disciples. While the extant dialogues merely pass down Plato’s “exoteric” doctrines, his most important “esoteric” insights were not meant for the general public. In the meantime, the contents and the significance of Plato’s “unwritten doctrines” have become the subject of debate in philosophical circles. Fifteen years ago, at the height of the controversy over the “unwritten doctrines”, Rafael Ferber entered the fray with a small book. He proposed that Plato was also unable to communicate the “unwritten doctrines” because the highest principles (i.e. the subject of the unwritten doctrines) cannot be known through logical operations due to an epistemological paradox. Ferber’s differentiated position met with great respect and acceptance, although in individual cases it was also rejected. Ferber’s new book again presents the text of 1991, but significantly expands on it through new perspectives and an outline of the discussion it triggered. In this book, the reader learns what is meant by Plato’s unwritten doctrines and what the controversy is all about. (shrink)

Current suggestions for capacities that should be targeted for moral enhancement has centered on traits like empathy, fairness or aggression. The literature, however, lacks a proper model for understanding the interplay and complexity of moral capacities, which limits the practicability of proposed interventions. In this paper, I integrate some existing knowledge on the nature of human moral behavior and present a formal model of prosocial motivation. The model provides two important results regarding the most friction-free route to moral enhancement. First, (...) we should consider decreasing self-interested motivation rather than increasing prosociality directly. Second, this should be complemented with cognitive enhancement. These suggestions are tested against existing and emerging evidence on cognitive capacity, mindfulness meditation and the effects of psychedelic drugs and are found to have sufficient grounding for further theoretical and empirical exploration. Furthermore, moral effects of the latter two are hypothesized to result from a diminished sense of self with subsequent reductions in self-interest. (shrink)

The paper presents, firstly, a brief review of the long history\nof information ethics beginning with the Greek concept of parrhesia\nor freedom of speech as analyzed by Michel Foucault. The recent concept\nof information ethics is related particularly to problems which arose\nin the last century with the development of computer technology and\nthe internet. A broader concept of information ethics as dealing\nwith the digital reconstruction of all possible phenomena leads to\nquestions relating to digital ontology. Following Heidegger{\textquoteright}s\nconception of the relation between ontology and metaphysics, (...) the\nauthor argues that ontology has to do with Being itself and not just\nwith the Being of beings which is the matter of metaphysics. The\nprimary aim of an ontological foundation of information ethics is\nto question the metaphysical ambitions of digital ontology understood\nas today{\textquoteright}s pervading understanding of Being. The\nauthor analyzes some challenges of digital technology, particularly\nwith regard to the moral status of digital agents. The author argues\nthat information ethics does not only deal with ethical questions\nrelating to the infosphere. This view is contrasted with arguments\npresented by Luciano Floridi on the foundation of information ethics\nas well as on the moral status of digital agents. It is argued that\na reductionist view of the human body as digital data overlooks the\nlimits of digital ontology and gives up one basis for ethical orientation.\nFinally issues related to the digital divide as well as to intercultural\naspects of information ethics are explored {\textendash} and long\nand short-term agendas for appropriate responses are presented. (shrink)

The Aymara of the Andes use absolute (cardinal) frames of reference for describing the relative position of ordinary objects. However, rather than encoding them in available absolute lexemes, they do it in lexemes that are intrinsic to the body: nayra (“front”) and qhipa (“back”), denoting east and west, respectively. Why? We use different but complementary ethnographic methods to investigate the nature of this encoding: (a) linguistic expressions and speech–gesture co-production, (b) linguistic patterns in the distinct regional Spanish-based variety Castellano Andino (...) (CA), (c) metaphorical extensions of CA’s spatial patterns to temporal ones, and (d) layouts of traditional houses. Findings indicate that, following fundamental principles of Aymara cosmology, people, objects, and land—as a whole—are conceived as having an implicit canonical orientation facing east, a primary landmark determined by the sunrise. The above bodily based lexicalizations are thus linguistic manifestations of a broader macro-cultural worldview and its psycho-cognitive reality. (shrink)

Corporations perform actions that can inflict harm with different levels of intensity, from death to material loss, to both companies’ internal and external stakeholders. Research has analysed corporate harm using the notions of corporate social irresponsibility and corporate crime. Critical management studies have been subjecting management and organizational practices and knowledge to critical analysis, and corporate harm has been one of the main concerns of CMS. However, CMS has rarely been deployed to analyse CSIR and corporate crime. Thus, the aim (...) of this paper is to critically analyse the perspectives of CSIR and corporate crimes on corporate harm via CMS in general and postcolonial studies in particular. The paper contributes by arguing that research on CSIR and corporate crime could be perceived as producing research that does not challenge the essence of contemporary corporation profit-seeking activities that ultimately produces corporate harm. We argue that CSIR and corporate crime are ideologies that assist in disguising the contradiction between producing shareholder value and the social good that is at the heart of the modern corporation system and the current economic system. Furthermore, the postcolonial view of CSIR and corporate crime highlights how they are based on a Western-centric view of corporate harm that ignores the realities and perspectives of the Global South, especially in situations where corporate harm leads to death in the Global South. (shrink)

Dual-Process Theories (D-PTs) claim there are two qualitatively different types of processes in the human brain-mind. Despite forming the basis for several areas of cognitive science, they are still shrouded in ambiguity: critics erroneously attack D-PTs as a whole (e.g., Evans and Stanovich Perspectives on Psychological Science, 8(3), 2013), the qualitative/quantitative distinction is not clear enough (De Neys Perspectives on Psychological Science 16 (6): 1412–1427, 2021; Dewey 2022) and, given this criterion, deciding between qualitative or quantitative differences may even be (...) scientifically irrelevant (De Neys 2021). As a way of disambiguating the discussion and clarifying what exactly means to claim the existence of a second type of process, I define two possible categories of D-PT: The substantial and the instrumental. In the substantial case, Type 2 processes are subpersonal level ones. In the instrumental case, Type 2 processing is a personal level phenomenon that does not necessarily imply subpersonal level Type 2 processes. Discussing the different implications of each of the categories, I use as a main example to illustrate the ambiguity – and the exercise of disambiguation – the model proposed by Evans and Stanovich (2013), making clear its substantial character, and contrast it with Frankish’ (2009) – a clear case of instrumental D-PT. Finally, I discuss the contributions this distinction can make. By making the discussion clearer, it can provide a relatively unanimous framework for dual- and single-process theorists (the instrumental version) and clearer desiderata for those wishing to defend the substantive one. (shrink)

This essay proposes that the work of Sylvia Wynter, a canonical figure in Afro-Caribbean philosophy, demonstrates other ways of doing philosophy, a comparative philosophy carried out as a cross-cultural exercise. Sylvia Wynter has argued for a “New Science of the Word” by drawing from the contributions of Frantz Fanon (sociogeny), Aimé Césaire (poetic knowledge), and the field of cybernetics, among other sources. This essay aims to explain the framework and methodology of the New Science and the original transdisciplinary engagement that (...) such a framework facilitates. It argues that, by appropriating the concept of “autopoiesis” beyond the natural sciences, Wynter refashions autopoiesis as autopoetics to answer the age-old question of what it means to be human. Comparative philosophy, the essay concludes, can be fertile ground for Wynter’s project and epistemic decolonization. (shrink)

In this paper two systems of AGM-like Paraconsistent Belief Revision are overviewed, both defined over Logics of Formal Inconsistency (LFIs) due to the possibility of defining a formal consistency operator within these logics. The AGM° system is strongly based on this operator and internalize the notion of formal consistency in the explicit constructions and postulates. Alternatively, the AGMp system uses the AGM-compliance of LFIs and thus assumes a wider notion of paraconsistency - not necessarily related to the notion of formal (...) consistency. (shrink)

It is presently unclear whether a distinct “rural ethics” of navigating professional boundaries exists, and if so, what theoretical approaches may assist practitioners to manage overlapping relationships. To be effective clinicians while concurrently partaking in community life, practitioners must develop and maintain safe, ethical, and sustainable therapeutic relationships in rural and remote healthcare. A narrative review was conducted identifying a significant body of qualitative and theoretical literature which explores the pervasiveness of dual relationships for practitioners working in rural and remote (...) healthcare. Rather than viewing dual relationships as ethically unacceptable, much contemporary work focusses on the lived experiences of healthcare workers and explores what approaches may be available that both protect the therapeutic relationship while recognizing the unique nature of rural and remote healthcare practice. We conclude that practitioners must have a means of operating within a contextually informed ethics of professional boundaries. Drawing on pre-existing work, one schema is proposed that could form the basis for further engagement through interactive teaching sessions, professional development, mentoring, or guidelines. (shrink)

In ‘A politics of reminding: Khoisan resurgence and environmental justice in South Africa’s Sarah Baartman district’, Burnett et al. scrutinize the memory activism of the Gamtkwa Khoisan Council, which is part of the wider ‘Khoisan resurgence’ sweeping across post-apartheid South Africa. Although the authors missed important nuances, they also pointed out flaws in the way I used Niezen’s ‘therapeutic history’ [Niezen, R. (2009). The rediscovered self: Indigenous identity and cultural justice. McGill-Queen’s Press] in my work to account for why Khoisan (...) activists turn to the past. I therefore not only respond to their criticism, but also revise aspects of my theoretical framework. Therapeutic history is not divorced from material concerns. Nor is it representative of all engagements with the past by indigenous people or simply the opposite of academic history. Instead, by drawing on my ethnographic fieldwork and theorizing alongside the Khoisan, I show how it captures emic discourses on the past that entangle notions of indigenous identity, healing, and history in order to resist settler colonialism and its oppressive etic histories. While the concept of therapeutic history has its limitations, it effectively highlights indigenous people’s agency in the face of settler colonialism in South Africa and elsewhere. (shrink)

This paper deals with the deuteros plous, literally ‘the second voyage’, proverbially ‘the next best way’, discussed in Plato’s Phaedo, the key passage being Phd. 99e4-100a3. I argue that (a) the ‘flight into the logoi’ can have two different interpretations, a standard one and a non-standard one. The issue is whether at 99e-100a Socrates means that both the student of erga and the student of logoi consider images (‘the standard interpretation’), or the student of logoi does not consider images but (...) that “consistency should suffice for truth” (‘the non-standard interpretation’); (b) the non-standard one implies the problem of the hypothesis, a problem analogous to the problem of the elenchus; (c) there is a structural analogy between Descartes’ ontological argument for the existence of God in his 5th Meditation and the final proof for the immortality of the soul in the Phaedo. (shrink)

What is the nature of number systems and arithmetic that we use in science for quantification, analysis, and modeling? I argue that number concepts and arithmetic are neither hardwired in the brain, nor do they exist out there in the universe. Innate subitizing and early cognitive preconditions for number— which we share with many other species—cannot provide the foundations for the precision, richness, and range of number concepts and simple arithmetic, let alone that of more complex mathematical concepts. Numbers and (...) arithmetic, and mathematics in general, have unique features—precision, objectivity, rigor, generalizability, stability, symbolizability, and applicability to the real world—that must be accounted for. They are sophisticated concepts that developed culturally only in recent human history. I suggest that numbers and arithmetic are realized through precise combinations of non-mathematical everyday cognitive mechanisms that make human imagination and abstraction possible. One such mechanism, conceptual metaphor, is a neurally instantiated inference-preserving cross-domain mapping that allows the conceptualization of abstract entities in terms of grounded bodily experience. I analyze how the inferential organization of the properties and “laws” of arithmetic emerge metaphorically from everyday meaningful actions. Numbers and arithmetic are thus—outside of natural selection—the product of the biologically constrained interaction of individuals with the appropriate cultural and historical phenotypic variation supported by language, writing systems, and education. (shrink)

The important yet contradictory role of innovation in society calls for a philosophy of innovation. Critically exploring innovation in relation to values, the economy and social change, Rafael Ziegler proposes a collaborative theory and practice of innovation that aims to liberate possibilities for our common futures. Following cues from the arts and drawing on the innovation literature across the social sciences, this book exposes pro-innovation bias and the gospel of disruptive change. Not only entrepreneurs but also civic networks and (...) tinkerers are discussed as sources of innovation, and social change as a balancing act of innovation, exnovation and restoration. The discussion of capabilitarian, communitarian, liberal, republican and socialist ideas of justice and innovation leads Ziegler to a transformative proposal: 'enough innovation' based on enough for all and with respect for all. This is a thought-provoking read for scholars working on sustainability-transformation, democratic, responsible and social innovation, and philosophy of economics. (shrink)

This paper presents an experience in developing professional ethics by an approach that integrates knowledge, teaching methodologies and assessment coherently. It has been implemented for students in both the Software Engineering and Computer Engineering degree programs of the Technical University of Madrid, in which professional ethics is studied as a part of a required course. Our contribution of this paper is a model for formative assessment that clarifies the learning goals, enhances the results, simplifies the scoring and can be replicated (...) in other contexts. A quasi-experimental study that involves many of the students of the required course has been developed. To test the effectiveness of the teaching process, the analysis of ethical dilemmas and the use of deontological codes have been integrated, and a scoring rubric has been designed. Currently, this model is also being used to develop skills related to social responsibility and sustainability for undergraduate and postgraduate students of diverse academic context. (shrink)

Not only is freedom a shared concern of Sartre and Schelling, which would not be anything particularly unique, but for both philosophers, freedom must be articulated out of an ontological ground, or within the confines of an ontological system. A contradiction nevertheless appears to arise regarding the “orientation” of Sartre and Schelling’s respective “ontologies of freedom”: the freedom of Sartre, reflecting a contemporary stoic-inspired doctrine, is directed toward the future, while for Schelling, with affinities to the temporal logic of psychoanalysis, (...) freedom is oriented toward the past. This article presents both Sartre and Schelling’s ontological reasoning out of which either a progressively oriented freedom (the freedom to negate the present in the name of future “possibles”) or a retrogressively oriented freedom (the freedom to determine the ground of the present out of an indefinite, a-temporal becoming), before attempting to resolve this contradiction in the temporality of freedom by examining the position and role of the negative (of negation, contradiction, or nothingness), as either secondary or primary, within the ontology of each respective philosopher. (shrink)

In the whole Corpus Platonicum, we find in principle only one "direct argument" (Charles Kahn) for the existence of the ideas (Tim.51d3-51e6). The purpose of the article is to analyse this argument and to answer the question of why Plato in the Timaeus again defended the existence of the ideas despite the objections in the Parmenides. He defended it again because the latent presupposition of the apories in the Parmenides, the substantial view of sensibles, is removed through the introduction of (...) space as "substantialized extension". First (I) it is shown that Plato remained in dialogues, like the Sophist and Politicus, faithful to the "theory of ideas" despite his criticism in the Parmenides. The common theme in the trilogy of the Theaetetus, Sophist and Politicus is to refute relativism by showing that any relativism presupposes something absolute that is something like the "theory of ideas". The second part of the paper (II) examines closely the logical structure of the argument for the existence of ideas in the Timaeus (51d3-52a7). The third part (III) shows how this argument can avoid the criticism of ideas in the Parmenides. In the Parmenides, sensibles are treated as substantial entities. But, as the Timaeus shows, sensibles are not substantial entities but merely qualities, namely qualities of space, which is the only substance in the sensible world. A shortened English version of the paper appeared in Proceedings of the Fourth Symposium Platonicum, Granada, Selected papers, ed. by T. Calvo/L. Brisson, Academia Verlag, St. Augustin, 1997, 179-186. -/- But the only "direct argument" (Tim.51d3-51e6) seems to be interestingly flawed. Cf. Ferber, Rafael; Hiltbrunner, Thomas, (2005). (shrink)