Ya se toca la fecha del cincuentenario de la desaparición de Don Blas Cabrera (1878-1945). Su vida se acompasó con la misma historia de la ciencia española en unas cuantas décadas del comienzo de este siglo. Y para hacer de la tradición memoria venimos a la tierra que le vio nacer a pregonar lo que él supuso en la marcha cansina de nuestra ciencia; a evocar lo que él significó como punto de inflexión de la Física española; a (...) exaltar lo que Cabrera representó en el avance de la ciencia hacia su confluencia con el humanismo y la cultura; a ejemplificar en él una de las actitudes más completas y múltiples de las que un hombre de ciencia puede mostrar, e incluso adelantándose un tanto a ese pregón más actual de la presencia de la ciencia en la sociedad.…. (shrink)

In the fifty-one years since its publication Dirac's magnetic monopole conjecture has stimulated a theoretical outpouring rich in variety. We review here the experimental techniques with which monopoles have been sought and we will describe the limits on monopole properties these searches have established.

The fundamental purpose of this research work was to explain how the management of agile methodologies for the development of competencies of university students in the Peruvian context. Based on this question, it has been hypothesized that agile methodologies significantly help the development of students' competencies. This is complemented by a quantitative approach study, with a quasi-experimental design of the "Design with pre-test - post-test with experimental groups and control groups" model. The students of the one Peruvian University were considered (...) as the study population, of which the students of the Faculty of Initial Education were taken as a study sample, within which 100 students participated as an experimental group. 100 from V, VII, X cycle and as a control group 100 students from II, III, and IV cycle respectively. Therefore, as the main result, it is evident that, with a bilateral significance of.000 less than the predetermined significance of 0.05 and a result of F = 1.013, they confirm that the first condition of equality of variances is met and thus establish the Test of the General Hypothesis or HG according to the normal "Z" equal to 8.965, in the case of two independent samples and a difference of 3.81 plus Gl = 51 degrees of freedom and assuming a 95% confidence level, the hypothesis is rejected null and the alternative Hypothesis is accepted, concluding that agile methodologies significantly help the development of students' competencies with a significance of pv,000.. (shrink)

Con el horizonte de una marcada preocupación ante el problema que se le plantea a la Lengua española por el abandono a que la somete el imperio de la Lengua inglesa en la creación y uso de términos científicos, y por el exilio lingüístico de los científicos españoles, en este trabajo se tratan los siguientes problemas: 1) la dificultad del Lenguaje para la Filosofía, para la conceptualización y la designación; 2) la participación de los científicos españoles en las tareas de (...) la Academia Española, particularizada en Leonardo Torres Quevedo y Blas Cabrera; 3) el panorama del Español científico ante la creación y el uso de términos; para terminar con 4) la exposición de algunas vías para detener el proceso de deterioro de la Lengua española. (shrink)

As in other countries, the public in Argentina became aware of the existence of something called “the theory of relativity” only after November 1919. Although the news of Arthur Eddington's eclipse expedition, which provided the first confirmation of Einstein's theory, was poorly reported in the newspapers, by the end of 1920 Einstein had become a household name for the educated middle class of Buenos Aires, the capital city of the country. This was in great measure the result of the activity (...) of a few enthusiastic lecturers. Significantly, none of them belonged to the prestigious Institute of Physics of the University of La Plata, which during the decade of the 1910s was considered the most important center of physical research in Latin America. Between July and August 1920 the Spanish physicist Blas Cabrera – perhaps the greatest popularizer of Einstein's theory in Spain – visited Argentina and talked about relativity. In September Georges Duclout, a French engineer who had graduated from the Zurich Polytechnic and by then was professor of applied mechanics at the School of Exact, Physical and Natural Sciences of the University of Buenos Aires, also gave a series of conferences on the subject. That same month José Ubach, a Jesuit astronomer trained at the Ebro Observatory in Spain, and established in Buenos Aires, lectured on relativity at the Colegio del Salvador. (shrink)

This book provides the first in-depth exploration of the importance of music for Ludwig Wittgenstein’s life and work. Wittgenstein’s remarks on music are essential for understanding his philosophy: they are on the nature of musical understanding, the relation of music to language, the concepts of representation and expression, on melody, irony and aspect-perception, and, on the great composers belonging to the Austrian-German tradition. Biography and philosophy, this work suggests that Wittgenstein was a composer of philosophy who used the musical form (...) as a blueprint for his own writing and thought. For Wittgenstein music is not alone, but connects and resonates with our cultural forms of life. His relation to composers, especially to Richard Wagner and Gustav Mahler, enables Wittgenstein to address the question of how to do philosophy and compose music in the breakdown of tradition. Unlike his conservative musical sensibility, Wittgenstein’s philosophy is open to musical experiments. Reflecting on his remarks on music makes it possible to compare the therapeutic aim of his philosophical activity with that of music, and thus notice affinities between Wittgenstein and John Cage. Béla Szabados has a Ph.D. in philosophy from the University of Calgary and is professor of philosophy at the University of Regina. His publications include Wittgenstein Reads Weininger (2004), Wittgenstein at the Movies (2011) and Wittgenstein on Race, Gender, and Cultural Identity: Philosophy as a Personal Endeavour (2010). (shrink)

This book provides a detailed reconstruction of the process of formation of the modern concept of society as an objective entity from the 1820s onwards, thus helping to better understand the shaping of the modern world and the nature of the current crisis of modernity. The concept has exerted considerable influence over the last two centuries, during which time many people have conceived themselves and behave as members of a society, and social scientists have explained human subjectivities and conducts as (...) social effects. For both groups, society exists as a very real phenomenon. Historical inquiry shows, however, that the modern concept of society is no more than a historically contingent way of imagining and making sense of the human world.. (shrink)

La revolución digital de trasfondo transhumanista en la que estamos inmersos plantea un escenario de robotización también de la función jurisdiccional. El uso intensivo de Big Data e Inteligencia Artificial (IA) abriría la posibilidad de que sean las máquinas quienes razonen jurídicamente y sean -en definitiva- quienes tomen las decisiones dirimentes de los conflictos sociales so capa de una mayor rapidez, objetividad y predictibilidad; en definitiva, dada su evidente eficiencia en comparación con los juzgadores humanos. Sin embargo, conviene examinar atentamente (...) las limitaciones de la IA aplicada a la argumentación jurídica. Merece la pena recapacitar acerca de la idoneidad social de una eventualidad tal. Se concluye escuchando voces autorizadas que se han pronunciado al respecto, cuestionando la existencia de una ‘justicia transhumanista’, pues el uso intensivo y extensivo de la IA no dejaría de ser una capitulación de la ciencia jurídica. Ahora bien, un uso encuadrado dentro de sus posibilidades abre una oportunidad para el mejor razonamiento jurídico y la extensión de los métodos de resolución de conflictos alternativos a la jurisdicción estatal. (shrink)

Salem, Sara. “Feminismo islámico, interseccionalidad y decolonialidad.” Tábula Rasa 21 (2014): 111-122.

This paper aims to contribute to the existing literature on normative cognition by providing a lineage explanation of human social norm psychology. This approach builds upon theories of goal-directed behavioral control in the reinforcement learning and control literature, arguing that this form of control defines an important class of intentional normative mental states that are instrumental in nature. I defend the view that great ape capacities for instrumental reasoning and our capacity (or family of capacities) for shared intentionality coadapted to (...) each other and argue that the evolution of this capacity has allowed the representation of social norms and the emergence of our capacity for normative guidance. (shrink)

In this paper, I offer an analysis of the radical disagreement over the adequacy of string theory. The prominence of string theory despite its notorious lack of empirical support is sometimes explained as a troubling case of science gone awry, driven largely by sociological mechanisms such as groupthink (e.g. Smolin 2006). Others, such as Dawid (2013), explain the controversy by positing a methodological revolution of sorts, according to which string theorists have quietly turned to nonempirical methods of theory assessment given (...) the technological inability to directly test the theory. The appropriate response, according to Dawid, is to acknowledge this development and widen the canons of acceptable scientific methods. As I’ll argue, however, the current situation in fundamental physics does not require either of these responses. Rather, as I’ll suggest, much of the controversy stems from a failure to properly distinguish the “context of justification” from the “context of pursuit”. Both those who accuse string theorists of betraying the scientific method and those who advocate an enlarged conception of scientific methodology objectionably conflate epistemic justification with judgements of pursuit-worthiness. Once we get clear about this distinction and about the different norms governing the two contexts, the current situation in fundamental physics becomes much less puzzling. After defending this diagnosis of the controversy, I’ll show how the argument patterns that have been posited by Dawid as constituting an emergent methodological revolution in science are better off if reworked as arguments belonging to the context of pursuit. (shrink)

La elaboración del dossier temático de la revista Aletheia sobre memorias y experiencias de identidades de género disidentes en Argentina se constituyó en una oportunidad para cuestionar y evidenciar problemáticas que recorren y estructuran los debates sobre el tema en el ámbito académico-universitario. Dichas reflexiones se encuentran condensadas en este escrito, un texto dialógico producto de un intercambio reflexivo entre el autor y las coordinadoras del dossier. Blas es profesor de filosofía, becario doctoral (CONICET) y activista de Derechos Humanos. (...) Es docente de Gnoseología de la Facultad de Filosofía y Letras de la Universidad de Buenos Aires y co-coordinador de la Cátedra Libre de Estudios Trans. Este escrito es el producto de conversaciones conjuntas, entrecortadas, pausadas, de preguntas y respuestas construidas a lo largo de los últimos meses. Un diálogo que pretende abrir nuevos interrogantes sobre cómo entendemos, construimos y habitamos los espacios académico-universitarios, qué estrategias se despliegan en la pretendida búsqueda de políticas de inclusión y cuáles son sus limitaciones de las que no podemos escapar. Ello nos conduce a repensar cómo entendemos el género y las identidades. (shrink)

In addition to opening a fertile field for inquiry in analytical social epistemology, Miranda Fricker’s work has provided powerful conceptual tools that merge descriptive capacity and political potency. For this reason, over the last fifteen years, the conceptual repertoire introduced by the author has been well received in both academic and political arenas. At times, the concepts of both testimonial and hermeneutical injustice acquire excessive dimensions in the literature, and this undermines, on the one hand, their analytical precision and, on (...) the other, their usefulness. In this paper I argue against Fricker’s structural parallelism thesis and defend an independent treatment of each of these concepts. On this basis, to counteract the hyperinflation of the concept of hermeneutic injustice, I proceed with an exercise of conceptual precision. To this end, I identify the conditions that make hermeneutic injustice both unjust and hermeneutic. Finally, I present theoretical and practical reasons to encourage the rigorous use of these concepts. (shrink)

In this paper, I examine Cicero’s oft-neglected De Divinatione, a dialogue investigating the legitimacy of the practice of divination. First, I offer a novel analysis of the main arguments for divination given by Quintus, highlighting the fact that he employs two logically distinct argument forms. Next, I turn to the first of the main arguments against divination given by Marcus. Here I show, with the help of modern probabilistic tools, that Marcus’ skeptical response is far from the decisive, proto-naturalistic assault (...) on superstition that it is sometimes portrayed to be. Then, I offer an extended analysis of the second of the main arguments against divination given by Marcus. Inspired by Marcus’ second main argument, I formulate, explicate, and defend a substantive principle of scientific methodology that I call the “Ciceronian Causal-Nomological Requirement” (CCR). Roughly, this principle states that causal knowledge is essential for relying on correlations in predictive inference. Although I go on to argue that Marcus’ application of the CCR in his debate with Quintus is dialectically inadequate, I conclude that De Divinatione deserves its place in Cicero’s philosophical corpus, and that ultimately, its significance for the history and philosophy of science ought to be recognized. (shrink)

Wie nahe stehen sich die jüdische Gedankenwelt und die Ideen Sören Kierkegaards? In einer dialogischen Konstellation findet die geistige Wahlverwandtschaft darauf eine Antwort. Richard Blättel nimmt dazu drei alttestamentarische Erzählungen mit existenzieller Färbung in den Blick: den Sündenfall, die Opferung Isaaks und Hiob. Sowohl Kierkegaard als auch die jüdischen Denker haben sich mit den biblischen Narrativen befasst, wobei das Motiv der Wiederholung zum Brennpunkt wird. Zwischen Schöpfung und Offenbarung kreist das erzählende Denken, das sich von der traditionellen Denkgeschichte des Abendlandes (...) abgrenzt. Dabei entsteht philosophisches Pathos als eine Form leidenschaftlichen Denkens. (shrink)

La utilización de la denominación “Escuela de Salamanca” en referencia a los aspectos económicos es confusa y problemática, porque no hay argumentos convincentes para sostener que fuera una auténtica escuela de pensamiento económico (tal como la definen Schumpeter y Stigler). Sin embargo, desde Larraz y Grice-Hutchinson, los historiadores del pensamiento económico han utilizado habitualmente dicha denominación por su poder como “marca comercial” para la divulgación, y también para hacer referencia de forma breve y sencilla a las notables aportaciones analíticas de (...) un conjunto de doctores escolásticos españoles. De hecho, las monografías de los historiadores se han concentrado sobre todo en analizar las contribuciones de estos escolásticos (teoría monetaria, derechos de propiedad, etc.), más que en discutir los criterios que podrían definirles como una escuela en asuntos económicos. (shrink)

There are numerous studies that, from different perspectives, have dealt with the debate held in the Spanish Empire during the 16th century on the slavery of the American Indians, starring –among others– by Francisco de Vitoria and his disciples from the School of Salamanca, and also –outside the academic sphere– by Fray Bartolomé de las Casas and Juan Ginés de Sepúlveda. The purpose of this work is to study whether this debate made its mark in Spanish society. For this, it (...) is analyzed three theatrical pieces from the Golden Age signed by playwrights of the stature of Tirso de Molina, Lope de Vega and Pedro Calderón de Barca, who –given their enormous popularity– had the capacity to reach the wide audience that congregated in the corrals of comedies. Were these three writers influenced by the controversy over the Indians carried out, among other authors, by Vitoria, Las Casas and Sepúlveda? Did they fully grasp in their works the subtle debate that Vitoria, Las Casas and Sepúlveda maintained when they interpreted Aristotelian arguments on slavery and the consequences that derived from them in terms of the possibility of enslaving or not the Indians? (shrink)

The year 2021 marked the commemoration of the centenary of the appearance of the stridentist movement and the literary avant-garde in Mexico. Stridentism broke into the public con- sciousness with the publication of the leaflet Actual No 1 on the main thoroughfares of Mexico City, convulsing the cultural en- vironment of the early 1920s and bringing together diverse young artists to undertake a literary renewal. This facsimile edition of Actual No 3, the final issue of Manuel Maples Arce’s magazine, which (...) appeared a hundred years ago this year and which until very recently was practically unknown, seeks to bring to the pub- lic something that is at once a singular avant-garde object and a magazine that expressed, at a very early stage, the cosmopolitan, iconoclastic, youthful character of stridentism and its time. "Stridentist Neo-object Actual No 3" is a essay that shows that from foundationless things and objects without gravitation to recomposed neo-objects emerges one of the lengthiest, rup- tured, polyhedric mutations in all fields of knowledge. The historical avant-gardes worked precisely in the turning of the tide on auratic objects that led to the appearance of neo-objects or recomposed objects. In their approach to objects, they tried var- ious operations: they deepened the depresentification of “natural” or “given” things, seeking—in some cases—dematerialization, the simultaneity of planes, the breakdown of logical links, while in others they the sought the primacy of the concept. They created multidimensional neo-objects shot through with events, on the scales of spaces, from the juxtaposed to the dislocated, the simultaneous contiguous to the dispersed, and the close to the distant. They criticized objects and materials they saw as bourgeois, auratic, and linked to ancient traditions and techniques. They created new syntactic velocities through which they interdigitated technical objects newly fashioned by human sensibility. (shrink)

En este artículo quisiera contemplar los argumentos de dos autores muy distintos, Seyla Benhabib y Slavoj Žižek, quienes coinciden en señalar que la aportación de Judith Butler a la filosofía política no resulta demasiado convincente por no considerar la tendencia utópica que toda teoría y práctica política debería mantener. Nos aproximaremos en orden cronológico a estas dos críticas, orden que nos va a permitir entender mejor la evolución del pensamiento de Butler.

El presente texto se inscribe dentro de la temática dirigida a la investigación sobre la violencia intrafamiliar. Tiene como objetivo sistematizar aspectos históricos y teóricos inherentes al estudio del maltrato infantil y sus consecuencias en el ámbito social y familiar para su detección y tratamiento en el nivel de atención primaria de los servicios de salud en Cuba. Mediante una revisión bibliográfica se logró concretar un análisis documental de materiales y textos en soporte digital e impreso que condujo a los (...) acercamientos teórico e histórico del fenómeno en el ámbito internacional y nacional, para su conceptualización, la determinación de su tipología y el establecimiento de sus consecuencias; elementos imprescindibles del saber profesional del futuro egresado de las ciencias médicas, en función de su desempeño en los diferentes niveles de atención de salud, en especial, la atención primaria. The text falls within the research on intrafamiliar violence subject matter. Its objective is to systematize historical and theoretical aspects inherent to the study of child abuse and its consequences within the social and domestic scopes for its detection and treatment in the Cuban primary health care services. By means of a bibliographic review, a documentary analysis of electronic and printed form materials and texts was summarized. It led to theoretical and historical approaches to the phenomenon within the national and international scopes for its conceptualization, the establishment of its typology and consequences. They are essential elements of the professional knowledge of future medical sciences graduates towards their performance in different health care levels, especially in primary health care. (shrink)

Discussions about the evolution of human social cognition usually portray the social environment of early hominins as highly hierarchical and violent. In this evolutionary narrative, our propensity for violence was overcome in our lineage by an increase in our intellectual capacities. However, I will argue in this article that we are at least equally justified in believing that our early hominin ancestors were less aggressive and hierarchical than is suggested in these models. This view is consistent with the available comparative (...) and palaeoanthropological evidence. I will show that this alternative model not only does not support long-held views of human origins, but also has important consequences for debates about the evolution of our capacity for normative guidance. 1Introduction 2Philosophical Motivation 3The Puzzle of Hominin Evolution 4The Mosaic Hypothesis 5Evidence for the Model 6Palaeoanthropological Support 7Philosophical Consequences. (shrink)

Could global government be the answer to global poverty and starvation? Cosmopolitan thinkers challenge the widely held belief that we owe more to our co-citizens than to those in other countries. This book offers a moral argument for world government, claiming that not only do we have strong obligations to people elsewhere, but that accountable integration among nation-states will help ensure that all persons can lead a decent life. Cabrera considers both the views of those political philosophers who say (...) we have much stronger obligations to help our co-citizens than foreigners and those cosmopolitans who say our duties are equally strong to each but resist restructuring. He then outlines his own position, using the European Union as a partial model for the integrated alternative and advocating instituting EU-style supranational government, development aid, and free movement of persons in the Americas and other regions. Over time, Cabrera argues that the transformation of the global system into a cohesive network of democratic institutions would help ensure that anyone born anywhere could lead a decent life. This book will appeal to all those interested in political philosophy and the processes and potential of globalization. (shrink)

In this article, I consider an important challenge to the popular theory of scientific inference commonly known as ‘inference to the best explanation’, one that has received scant attention.1 1 The problem is that there exists a wide array of rival models of explanation, thus leaving IBE objectionably indeterminate. First, I briefly introduce IBE. Then, I motivate the problem and offer three potential solutions, the most plausible of which is to adopt a kind of pluralism about the rival models of (...) explanation. However, I argue that how ranking explanations on this pluralistic account of IBE remains obscure and pluralism leads to contradictory results. In light of these objections, I attempt to dissolve the problem by showing why IBE does not require a ‘model’ of explanation and by giving an account of what explanation consists in within the context of IBE. (shrink)

There are many ways of interpreting the so-called new technologies. One of the most interesting is that which stems from defining them as a social imaginary, and therefore, as collective beliefs, fears and hopes. It is common to attribute to technologies all manner of threats that, founded or not, are real in the measure that the society makes decisions and acts in a way consistent with this conviction.The fears and anxieties of society lead to a consideration of the limits of (...) the human that technologies transgress. Among the figures with which one speaks about these limits there is Frankenstein, the modern Prometheus, which threatens modern fantasies with its deformity. There is, however, another man-made creature that can serve to orient our reflection, the Golem.In 1609, 400 years ago, Rabbi Loew died. He is credited with the creation of a homunculus by combining of secret codes. The problem of the Golem was its imperfect soul made manifest in its lack of speech. Its silent presence was a source of great fear in the community that finally asked to get rid of the creature.These figures of monstrosity, Frankenstein and above all Golem, will help us to make technologies understand from the fear that society projects onto them, and this will lead us to the question concerning the imaginary fears of the technological system. (shrink)

En este artículo quisiera aludir a las tesis de Bourdieu sobre la dominación simbólica, incidiendo en su faceta androcéntrica; para, a continuación contemplar cómo, debido al carácter incorporado de dicha estructura (esto es, a que su eficacia radica en que el dominado contribuye a su propia dominación), algunas teorías y prácticas feministas, como el feminismo de la diferencia de Luce Irigaray, los planteamientos éticos y políticos de Benhabib y la subversión de la identidad que promueve Butler, pueden llegar a reproducir (...) las diferencias que pretendían combatir. Finalmente, quisiera plantear las opciones que pueden llevar a cabo los distintos feminismos (y otras figuras dominadas) para evitar estos problemas. (shrink)

Este escrito presenta una discusión relativa a la posibilidad de que memorias individuales provenientes desde diversos contextos nacionales, esto es, separadas por distancias tanto físicas como políticas, y reunidas por una temática más o menos próxima como la vivencia del muy amplio fenómeno del vagabundaje (o la situación de calle, como tiende a denominársele hoy en día), puedan constituir o constituirse en memoria colectiva dadas sus características en común. Ejercicio crítico bibliográfico sobre el particular, en la práctica también lo es (...) respecto a las formas convencionales de escritura ensayística, al adoptar el más contemporáneo formato del correo electrónico; esto a propósito de la incidencia que la comunicación virtual y las tecnologías asociadas a la Internet han abierto a la memoria y la identidad, al actuar como su cotidiano difuminador/recreador. (shrink)

Reseña de la obra de Rodríguez González, Mariano: _Filosofía de la Mente_. Madrid: Ediciones Complutense, 2021, pp. 287.

The excessive use of social networks needs to be addressed, and this phenomenon needs to be measured for the purpose of evaluation, prevention, and intervention among adolescents and young people. The objective of the study was to adapt and psychometrically validate the Brief Scale of Addiction to Social Networks among Mexican adolescents and young adults. The participating sample consisted of 2,789 students from 6 public educational campuses in Cuernavaca. Data collection was carried out through a web platform to strictly maintain (...) anonymity, voluntary participation, and confidentiality. Data analysis first focused on the detection of possible response biases, the quality of the response structure partial credit model, dimensionality, and the relationship with external variables. It was found that when the range of efficient response options was limited to less than five, reliability was high, and unidimensionality was maintained. Response biases slightly affected the dimensional structure of the instrument. Measurement invariance reached scalar invariance in the sex, age, and campus groups. The association with sensation seeking and depression, controlling for sex and age covariates, was statistically significant, small, and theoretically consistent. Implications of the results are discussed. (shrink)

In this novel account of global citizenship, Luis Cabrera argues that all individuals have a global duty to contribute directly to human rights protections and to promote rights-enhancing political integration between states. The Practice of Global Citizenship blends careful moral argument with compelling narratives from field research among unauthorized immigrants, activists seeking to protect their rights, and the 'Minuteman' activists striving to keep them out. Immigrant-rights activists, especially those conducting humanitarian patrols for border-crossers stranded in the brutal Arizona desert, (...) are shown as embodying aspects of global citizenship. Unauthorized immigrants themselves are shown to be enacting a form of global 'civil' disobedience, claiming the economic rights central to the emerging global normative charter while challenging the restrictive membership regimes that are the norm in the current global system. Cabrera also examines the European Union, seeing it as a crucial laboratory for studying the challenges inherent in expanding citizen membership. (shrink)

Retraction note: Blas Blas, J. (2022). Seals and codes of good sustainable practices in the audiovisual industry. An approach to the state of the question. HUMAN REVIEW. International Humanities / Revista Internacional De Humanidades, 12(6), 2–11. https://doi.org/10.37467/revhuman.v11.4134 The Editorial Office of Eurasia Academic Publishing Group has retracted this article. An investigation carried out by our Research Integrity Department has found a group of articles, among which this one is found, that are not within the thematic scope of the (...) journal. We believe that the editorial process was manipulated and, furthermore, acceptance decisions were made under possibly inappropriate peer review. (shrink)

Shared intentionality is key for understanding human cooperation and cognition. This paper proposes a new way of looking at shared intentionality as a set of interconnected threshold traits, highlighting the role of developmental niche construction in its evolution. This perspective suggests that shared intentionality may have arisen from environmental changes and interactions influencing existing traits, rather than genetic variation for novel cognitive machinery.