Parenting involves an extraordinary degree of power over children. Republicans are concerned about domination, which, on one view, is the holding of power that fails to track the interests of those over whom it is exercised. On this account, parenting as we know it is dominating due to the low standards necessary for acquiring and retaining parental rights and the extent of parental power. Domination cannot be fully eliminated from child-rearing without unacceptable loss of value. Most likely, republicanism requires (...) that we minimise children’s domination. I examine alternative models of child-rearing that are immune to republican criticism. (shrink)

Agnieszka Jaworska and Julie Tannenbaum recently developed the ingenious and novel person‐rearing account of moral status, which preserves the commonsense judgment that humans have a higher moral status than nonhuman animals. It aims to vindicate speciesist judgments while avoiding the problems typically associated with speciesist views. We argue, however, that there is good reason to reject person‐rearing views. Person‐rearing views have to be coupled with an account of flourishing, which will (according to Jaworska and Tannenbaum) be either (...) a species norm or an intrinsic potential account of flourishing. As we show, however, person‐rearing accounts generate extremely implausible consequences when combined with the accounts of flourishing Jaworska and Tannenbaum need for the purposes of their view. (shrink)

Background: Earlier study without actual trial indicated that caregivers needed delivery of information about outbreak situations independently of their job status. This report describes, for about two months in winter, actual delivery outbreak information to families with preschool children. The study objective was to confirm the usefulness of this information delivery. Method: Participants receiving outbreak information were recruited from the Child Care Support Service in a ward in Tokyo, Japan. Outbreak information was obtained from the Nursery School Absenteeism Surveillance System (...) (NSASSy) covering approximately 40% of all nursery schools in Japan, prescription surveillance and other resources. Delivery of outbreak information started in December 2017 and ceased at the end of February in 2018. After the delivery period, a questionnaire survey was administered to participants. Results: For this area, NSASSy showed the most dominant disease was influenza, with 707 patients, followed by group A streptococcal pharyngitis with 98 patients. The outbreak peak was inferred to be as Monday, 22 January, and it was announced by e-mail on 23 January. Of the 202 persons joined this trial, 60 participants responded to the questionnaire survey after the delivery period. Of those respondents, 98% wanted delivery of that information to continue. Conclusion: We found that almost all respondents confirmed usefulness of the information about infectious diseases which was delivered. (shrink)

While seeking novel food sources to feed the increasing population of the globe, several alternatives have been discussed, including algae, fungi or in vitro meat. The increasingly propagated usage of farmed insects for human nutrition raises issues regarding food safety, consumer information and animal protection. In line with law, insects like any other animals must not be reared or manipulated in a way that inflicts unnecessary pain, distress or harm on them. Currently, there is a great need for research in (...) the area of insect welfare, especially regarding species-specific needs, health, farming systems and humane methods of killing. Recent results from neurophysiological, neuroanatomical and behavioral sciences prompt caution when denying consciousness and therefore the likelihood of presence of pain and suffering or something closely related to it to insects. From an animal protection point of view, these issues should be satisfyingly solved before propagating and establishing intensive husbandry systems for insects as a new type of mini-livestock factory farming. (shrink)

The name ‘pluralism’ frequently rears its head in political philosophy, but theorists often have different things in mind when using the term. Whereas ‘reasonable pluralism’ refers to the fact of moral diversity among citizens of a liberal democracy, ‘value pluralism’ is a metaethical view about the structure of moral practical reasoning. In this paper, I argue that value pluralism is part of the best explanation for reasonable pluralism. However, I also argue that embracing this explanation is compatible with political liberalism’s (...) commitment to avoiding controversial premises. According value pluralism an explanatory role does not entail according it a justificatory one. What’s more, explaining reasonable disagreement in terms of reasonable disagreement about value weights opens up space for direct appeal to substantive values within political liberalism. In particular, promoting a substantive political value when doing so does not conflict with other values is unproblematic. (shrink)

This paper explores the idea that popular narrative film can somehow contribute to our philosophical understanding. I identify a number of problems with this 'film as philosophy' thesis and argue that the capacity of film to contribute to philosophy is not as great as many authors think. Specifically, I argue that film can only offer genuinely distinctive insights into philosophical questions *about film* and explore Hitchcock's Rear Window as an example of this.

De-extinction is the process through which extinct species can be brought back into existence. Although these projects have the potential to cause great harm to animal welfare, discussion on issues surrounding de-extinction have focussed primarily on other issues. In this paper, I examine the potential types of welfare harm that can arise through de-extinction programs, including problems with cloning, captive rearing and re-introduction. I argue that welfare harm should be an important consideration when making decisions on de-extinction projects. Though (...) most of the proposed benefits of these projects are insufficient to outweigh the current potential welfare harm, these problems may be overcome with further development of the technology and careful selection of appropriate species as de-extinction candidates. (shrink)

Our culture is conflicted about morally judging and condemning. We can't avoid it altogether, yet many layfolk today are loathe to do it for reasons neither they nor philosophers well understand. Their resistance is often confused (by themselves and by theorists) with some species of antiobjectivism. But unlike a nonobjectivist, most people think that (a) for us to judge and condemn is generally (objectively) morally wrong , yet (b) for God to do so is (objectively) proper, and (c) so too (...) for certain persons in certain relations (e.g., self-condemnation, parental child rearing.) Certainly, religious (e.g., Christian) critics of judging and condemning without doubting the objective truth of their tradition's core moral teachings. Most puzzling is that (a) merely judging and condemning in one's heart may be improper, and (b) someone else with no more evidence or expertise might properly judge and condemn the same action. The answer is in condemning's complex structure of presuppostions. Condemning and judging are acts, and attitudes initiated by the act. Condemnation is motivated by two judgments presumed to justify it, a criticism of a target, and a judgment that the criticism justifies some negative response toward the target. Unlike nonpunitive penalties, punishments are motivated and explained by condemnation. Condemnation is an act of a hostile will, wishing some evil for its target, not (just) as a means to some good. Its root is in damning, an act akin to cursing. It declares a degraded status. The hostility makes it harder to justify condemnation than criticism, and punishment than nonpunitive penalties. Condemning claims objectivity and authority. It involves reflexive evaluation, regarding itself justified, approving its hostile feelings toward the target. Condemners presume themselves entitled to sit in judgment, pass judgment, and cast the condemned down. Those presumptions inhere in sitting in judgment, assuming jurisdiction. Unlike mathematical or scientific judgments, passing moral judgment seems to be a political act subject to extraepistemic constraints. "Who are you to judge?" may properly challenge your right to pass judgment. (shrink)

Common sense morality and legislations around the world ascribe normative relevance to biological connections between parents and children. Procreators who meet a modest standard of parental competence are believed to have a right to rear the children they brought into the world. I explore various attempts to justify this belief and find most of these attempts lacking. I distinguish between two kinds of biological connections between parents and children: the genetic link and the gestational link. I argue that the second (...) can better justify a right to rear. (shrink)

Many current popular views in epistemology require a belief to be the result of a reliable process (aka ‘method of belief formation’ or ‘cognitive capacity’) in order to count as knowledge. This means that the generality problem rears its head, i.e. the kind of process in question has to be spelt out, and this looks difficult to do without being either over or under-general. In response to this problem, I propose that we should adopt a more fine-grained account of the (...) epistemic basing relation, at which point the generality problem becomes easy to solve. (shrink)

Several philosophers argue that individuals have an interest-protecting right to parent; specifically, the interest is in rearing children whom one can parent adequately. If such a right exists it can provide a solution to scepticism about duties of justice concerning distant future generations and bypass the challenge provided by the non-identity problem. Current children - whose identity is independent from environment-affecting decisions of current adults - will have, in due course, a right to parent. Adequate parenting requires resources. We (...) owe duties of justice to current children, including the satisfaction of their interest-protecting rights; therefore we owe them the conditions for rearing children adequately in the future. But to engage in permissible parenting they, too, will need sufficient resources to ensure their own children's future ability to bring up children under adequate conditions. Because this reasoning goes on ad infinitum it entails that each generation of adults owes its contemporary generation of children at least those resources that are necessary for sustaining human life indefinitely at an adequate level of wellbeing. (shrink)

This chapter argues that there is a collective responsibility to have enough children in order to ensure that people will not, in the future, suffer great harm due to depopulation. Moreover, if people stopped having children voluntarily, it could be legitimate for states to incentivize and maybe even coerce individuals to bear and rear children. Various arguments against the enforceability of an individual duty to bear and rear children are examined. Coercing people to have children would come at significant moral (...) cost; however, none of the arguments against enforceability seem decisive. The existence of a collective responsibility to have children bears on the question of whether parents and non-parents ought to shoulder the costs of childbearing and child rearing together. (shrink)

The topic of this paper is whether there is metaphysical vagueness. It is shown that it is important to distinguish between the general phenomenon of indeterminacy and the more narrow phenomenon of vagueness (the phenomenon that paradigmatically rears its head in sorites reasoning). Relatedly, it is important to distinguish between metaphysical indeterminacy and metaphysical vagueness. One can wish to allow metaphysical indeterminacy but rule out metaphysical vagueness. As is discussed in the paper, central argument against metaphysical vagueness, like those of (...) Gareth Evans and Mark Sainsbury, would if successful rule out metaphysical indeterminacy. One way to argue specifically against the possibility of metaphysical vagueness might be thought to be to argue for a specific theory of the nature of vagueness according to which vagueness is a semantic phenomenon. But it is shown that there are complications also pertaining to arguments with that structure. Toward the end of the paper, I discuss Trenton Merricks’ well-known argument against a semantic view on vagueness and for a metaphysical view. (shrink)

Utilitarianism is the view according to which the only basic requirement of morality is to maximize net aggregate welfare. This position has implications for the ethics of creating and rearing children. Most discussions of these implications focus either on the ethics of procreation and in particular on how many and whom it is right to create, or on whether utilitarianism permits the kind of partiality that child rearing requires. Despite its importance to creating and raising children, there are, (...) by contrast, few sustained discussions of the implications of utilitarian views of welfare for the matter of what makes a child’s life go well. This paper attempts to remedy this deficiency. It has four sections. Section one discusses the purpose of a theory of welfare and its adequacy conditions. Section two evaluates what prominent utilitarian theories of welfare imply about what makes a child’s life go well. Section three provides a sketch of a view about what is prudentially valuable for children. Section four sums things up. (shrink)

Epicurus strongly discouraged sex, marriage, and the rearing of children. This paper looks at some of the primary evidence for these claims, clears up a translation of one passage, and emends another passage. (The emendation has been accepted into Dorandi's new edition of Diogenes Laertius).

Some philosophers argue that we should limit procreation – for instance, to one child per person or one child per couple – in order to reduce our aggregate carbon footprint. I provide additional support to the claim that population size is a matter of justice, by explaining that we have a duty of justice towards the current generation of children to pass on to them a sustainable population. But instead of, or, more likely, alongside with, having fewer children in in (...) each family, we could also create families with more than two parents. I explore this possibility by pointing out the ways in which multi-parenting can advance children’s interests: in higher levels of well-being, in non-monopolistic child-rearing, and in a future opportunity to become themselves parents. (shrink)

Health institutions recommend that young infants be exclusively breastfed on demand, and it is widely held that parents who can breastfeed have an obligation to do so. This has been challenged in recent philosophical work, especially by Fiona Woollard. Woollard’s work critically engages with two distinct views of parental obligation that might ground such an obligation—based on maximal benefit and avoidance of significant harm—to reject an obligation to breastfeed. While agreeing with Woollard’s substantive conclusion, this paper (drawing on philosophical discussion (...) of the ‘right to rear’) argues that there are several more moderate views of parental obligation which might also be thought to ground parental obligation. We first show that an obligation to breastfeed might result not from a general obligation to maximally benefit one’s child, but from what we call ‘choice-specific’ obligations to maximise benefit within particular activities. We then develop this idea through two views of parental obligation—the Dual Interest view, and the Best Custodian view—to ground an obligation to exclusively breastfeed on demand, before showing how both these more moderate views fail. (shrink)

A short paper discussing the question of whether adults' interest in parenting can play a role in justifying the right to rear children.

Analytic philosophers tend to agree that intentional parental genetic shaping and intentional parental environmental shaping for the same feature are, normatively, on a par. I challenge this view by advancing a novel argument, grounded in the value of fair relationships between parents and children: Parental genetic shaping is morally objectionable because it unjustifiably exacerbates the asymmetry between parent and child with respect to the voluntariness of their entrance into the parent–child relationship. Parental genetic shaping is, for this reason, different from (...) and more objectionable than parental environmental shaping. I introduce a distinction between procreative decisions one makes qua mere procreator—that is, without the intention to rear the resulting child—and procreative decisions one makes qua procreator-and-future childrearer. Genetic shaping is objectionable when undertaken in the latter capacity: Both selection and enhancement are objectionable because they introduce an unnecessary and avoidable inequality in the parent–child relationship; in the case of enhancement, this also results in harm to the future child. (shrink)

Is the family subject to principles of justice? In "A Theory of Justice", John Rawls includes the (monogamous) family along with the market and the government as among the, "basic institutions of society", to which principles of justice apply. Justice, he famously insists, is primary in politics as truth is in science: the only excuse for tolerating injustice is that no lesser injustice is possible. The point of the present paper is that Rawls doesn't actually mean this. When it comes (...) to the family, and in particular its impact on fair equal opportunity, (the first part of the Difference Principle, Rawls' second principle of justice), he abandons the priority of justice. I also argue that he is right to do so. -/- The central argument is simple. As Rawls admits, what family one is raised by profoundly affects one's life chances: a child raised by a family has far greater life chances on every dimension than one raised in a poorer family that may lack books, education, and time to give the child attention. But the prevailing family arrangements in the industrialized West, assigning children to be raised by their biological parents, is guaranteed to perpetuate this injustice. While Rawls says an unjust institution in the basic structure of society, in which he includes the family, must be, "reformed or abolished," he refrains from calling for the reform or abolition of the family. We must simply work around it to compensate for the injustices he admits it involves. And this despite the fact that alternative arrangements involving communal child-rearing (Plato) or assigning children to those best qualified to raise them (Rousseau) are common in the philosophical literature. Moreover, the practice of having children raised by their biological parents is a relatively recent one, at least in the West, where, before the late 18th century, fostering-out or apprenticeship arrangements were normal and expected for both rich and poor for centuries. -/- Much of the paper is devoted to fine-grained textual analysis of Rawls' attempts to avoid the devastating implications of this argument for his theory of justice -- much of which are stated only in the original edition of "A Theory of Justice" and simply deleted, without substitution by anything better, in the second edition. In the end, Rawls has no way out. He cannot keep the priority of justice, fair equality of opportunity, and the monogamous family in which children are raised by their biological parents. As he admits, these are mutually inconsistent. -/- In the final part of the paper, I argue that Rawls should give up on the priority of justice. While child-rearing by the biological parents is a historical anomaly, in the real modern world it would be politically unfeasible to institute Platonic, Rousseauean, or similar legislation that purportedly assigned children to those best able to raise them, regardless of biological relationship. Since Rawls is committed to principles of political stability and feasibility, as he should be, and since ought implies can, such proposals are off the table. I concur with Rawls that we must work around this injustice, even those there are more just arrangements available in principle. But the cost of this -- less high than Rawls suggests -- is abandoning the principle of the priority of justice. Justice is one of a number of considerations that we must or may balance in deciding on the best attainable social relations. It is not a trump. However, this comes a great cost for Rawls: he must also abandon the lexical ordering of principles of justice or, in general, right or good principles of social order, in favor of the messy intuitionist balancing that his theory is designed to avoid. -/- One feature of the paper that is worth independent attention is a discussion of Marx's rejection of justice in the Critique of the Gotha Program, which I explicate, and urge, without adopting it, that it has a great deal more force than is widely understood. (shrink)

Walter Reese-Schäfer, Karl-Otto Apel, Zur Einführung (with an Afterword by Jürgen Habermas), Junis Verlag GmbH, Hamburg 1990, 176pp. DM 17.80 -/- The author, presently a freelance writer published in the newspaper “Die Zeit” and the magazine “Stern,” pro­vides in this small book a clear and concise introduction to sources, themes and conclusions in the philosophy of Karl-Otto Apel. Apel, Emeritus Pro­fessor at Frank­furt, and close colleague of Habermas, characterizes his viewpoint as a “transcen­dental pragmatism” in which a Kantian concern for (...) question regarding “the conditions for the possi­bility of some­thing,” (p.10) mixes with deontological discourse-ethics, semeiotic themes from Peirce, an ap­proach to fallibilism, the demand for “final justifica­tions” (Letzt­begründung) and German her­meneutics. In view of the “den­sity and concentration” of Apel’s texts, which often have a “deterrent effect” upon those not already at home with “the phil­osophical language game,” it is the announced aim of this book to provide a work of translation and clarification of Apel’s special­ized efforts --in effect an orientation to Apel’s work. The book divides into an Introduction, 8 chapters and a summary conclusion --with Habermas’ appreciation, “A Master Builder with Hermeneutic Feeling --The Way of Philosopher Karl-Otto Apel,” bringing up the rear. There is also a bibliography of primary and secondary sources and a short table outlining highlights of Apel’s career. The “Introduction” provides a good overview of the aims of the book and gets one started on central themes. (shrink)

Intense or industrial animal husbandry is morally bad. This consensus in animal ethics led to the emergence of veganism which is recently in decline in favour of ‘conscientious carnivorism’ which advocates eating animal products from animal-friendly animal husbandry in response to the moral problems of industrial farming. Advocates of animal-friendly husbandry justify rearing and killing ‘happy animals’ by highlighting that the animals live pleasant lives and would not have existed if not reared for human consumption. In this paper, I (...) tackle this ‘logic of the larder’ by showing that it serves as a purification strategy to conceal the harm that animals experience in this alleged animal-friendly type of farming. Defenders of ‘happy meat’ claim that animal-friendly animal husbandry is in the animals’ best interests and that it is in effect a ‘win-win situation’ for humans and farm animals alike. Departing from two critics of animal-friendly animal husbandry, I will show that the problem of this logic is that it evades the fact that moral residuals, which is the experienced harm by the animals, remain by engaging in this practice. Even if there may be strong reasons for the consumption of meat and derivatives of ‘happy animals’, the experienced harm for the animals will not be extinguished. I will denote the detachment that derives from the strategy of rendering the animals’ experienced harm in animal-friendly animal husbandry invisible as guilt. I will conclude that instead of purifying eating animals the ‘good way’, we should face the responsibility we have when killing ‘happy animals’ for ‘happy meat’. (shrink)

Imagine you fly home from vacation with your one-and-a-half-year-old son who is traveling for free as a “lap child.” In the airport parking lot, you put him into his forward-facing car seat, where he sits much more contentedly than he did in the rear-facing one that was mandatory until his first birthday. After he falls asleep on the way home, you transfer him to his crib without waking him, lowering the side rail so you can lift him in more easily. (...) -/- Many parts of this idyllic parenting picture are deemed unacceptably risky according to recent child safety proposals. While these proposals all aim to improve child safety, their possible impact is unclear because there has been little discussion of the absolute risk and risk reduction involved in each. And while precise figures are lacking, rough estimates indicate that the magnitudes are quite small. I will argue that this risk and benefit data raises important questions about the proposals, including whether parents might reasonably believe that the small absolute risk reduction offered by the proposed changes does not justify the attendant burdens. This possibility—termed the “prevention paradox” in other contexts—highlights ethical and theoretical challenges in this area of public health. (shrink)

As parents of a young woman who very much resembles Ashley, we recognize the way her parents speak of their daughter’s preciousness, and of the love and joy she brings into their life. We know too well the hardships associated with rearing a child with severe physical and intellectual disabilities, especially in our own society, unyielding as it is to the medical needs even “normals” have. We would not have our daughter Sesha undergo similar interventions. We do not believe (...) she is a perpetual child, even if her intellectual capacities do not exceed those of a child, for she has lived for thirty-seven years in this world and with that has acquired knowledge, sensitivities, and sensibilities that no child of “comparable” capacities could have. (shrink)

Co-parents who differ in their ideal child rearing policies should compromise, argues Marcus William Hunt. Josh Milburn and Carlo Alvaro dispute this when it comes to veganism. Milburn argues that veganism is a matter of justice and that to compromise over justice is (typically) impermissible. I suggest that compromise over justice is often permissible, and that compromise over justice may be required by justice itself. Alvaro offers aesthetic, gustatory, and virtue-based arguments for ethical veganism, showing that veganism involves sensibilities (...) and virtues, and argues that veganism involves a belief. Alvaro takes this to show that parental compromise is impermissible. I suggest that Alvaro’s arguments are implausible and that the shaping of a child’s sensibilities and virtues is an apt matter for parental compromise. (shrink)

For many, it is far from clear where the prerogatives of parents to educate as they deem appropriate end and the interests of their children, immediate or future, begin. In this article I consider the educational interests of children and argue that children have an interest in their own well-being. Following this, I will examine the interests of parents and consider where the limits of paternalism lie. Finally, I will consider the state's interest in the education of children and discuss (...) a familiar view that argues that we have a central obligation to cultivate good citizens. The article will focus on the tensions which inevitably arise from the sometimes conflicting interests between them. (shrink)

In the Odyssey, there is a description of Odysseus being recognized by his age-old and decrepit dog Argos, whom he had reared and trained himself before his departure for Troy. This so-called Argos episode (Od. 17.290–327) is still famous today. It has been continuously treated by generations of scholars from antiquity to our time and served as an inspiration to both the visual arts and literature. The present article deals with the function and intended effects of the Argos scene. After (...) a brief synopsis of the position of this scene within the Odyssey as well as of its content and structure, the author discusses the role of dogs in the Iliad and the Odyssey. The focus of this article lies on the interpretations of the Argos scene, suggested by scholars so far, and on their review by means of a close reading to check their plausibility. (shrink)

Numerous evolutionary linguists have indicated that human pointing behaviour might be associated with the evolution of language. At an ontogenetic level, and in normal individuals, pointing develops spontaneously and the onset of human pointing precedes as well as facilitates phases in speech and language development. Phylogenetically, pointing behaviour might have preceded and facilitated the evolutionary origin of both gestural and vocal language. Contrary to wild non-human primates, captive and human-reared nonhuman primates also demonstrate pointing behaviour. In this article, we analyse (...) the debates on pointing and its role it might have played in language evolution from a meta-level. From within an Applied Evolutionary Epistemological approach, we examine how exactly we can determine whether pointing has been a unit, a level or a mechanism in language evolution. (shrink)

The 1970s Wages Against Housework (WAH) movement has much to offer as we form a “new normal” for life and work within the Covid-19 pandemic. WAH feminist philosophers Mariarosa Dalla Costa, Selma James, and Silvia Federici, as well as WAH critic Angela Davis outline the ways in which the housewife functions as a laborer within capitalist accumulation, as her duties to care for the home and rear the children generate the possibility of the husband to labor outside the home. This (...) role of the housewife in Dalla Costa and James’ “social factory” parallels the work of teachers and the chorus of demands to “return to the classroom” that were placed on teachers in the early stages of the Covid-19 pandemic. Highlighting these parallels, the argument of this essay is simple: Covid-19 has visibilized the underpaid and unpaid labor of teachers. We ought to engage this moment of visibilization to demand transformative change to the teaching profession. Due to the parallels between WAH's “housewife” and teachers, we have much to learn from WAH theorizing as we demand those transformative changes, especially now as we solidify our “new normal” more than two years since the Covid-19 pandemic began. (shrink)

In Fall 2012, Green Mountain College’s oxen team “Bill and Lou” became the focus of an international animal rights protest. The Guernsey team had plowed the fields of the small Vermont college farm together for a decade. Lou injured a rear leg twice over the summer and eventually became unable to support his own great weight. With administrative support, the college’s farm crew decided to slaughter the team. This was in keeping with an aim of the college’s Farm and Food (...) Project to “close the loop” with its dining services. At that time the mission of the environmentally-themed liberal arts college was to represent a community-wide ethos of responsibility for the systemic impact of human behaviors. Accordingly, the college farm sought to build a sustainable farming and food system that lifts the veil that separates consumers from the source of meat and livestock products. The basic idea was that if students wish to be change agents in the world, they need to understand the ins-and-outs of the systems in which that change can take place. So the college strove to bring the food system into the classroom. Chefs and farmers weren’t hidden away in kitchens and fields; they were brought into the educational process. Guided by faculty, staff, and administrative oversight, along with a thick sheaf of policies, this periodically meant that students made life-and-death decisions. (shrink)

Robots as social companions in close proximity to humans have a strong potential of becoming more and more prevalent in the coming years, especially in the realms of elder day care, child rearing, and education. As human beings, we have the fascinating ability to emotionally bond with various counterparts, not exclusively with other human beings, but also with animals, plants, and sometimes even objects. Therefore, we need to answer the fundamental ethical questions that concern human-robot-interactions per se, and we (...) need to address how we conceive of »good lives«, as more and more of the aspects of our daily lives will be interwoven with social robots. (shrink)

Many parents cite intimacy as one of their reasons for deciding to educate at home. It seems intuitively obvious that home education is conducive to intimacy because of the increased time families spend together. Yet what is not clear is whether intimacy can provide justification for one’s decision to home educate. To see whether this is so, we introduce the concept of ‘attentive parenting’, which encompasses a set of family characteristics, and we examine whether and under what conditions attentive parents (...) risk loss of intimacy by sending their children to school; or, alternatively, whether they can avoid this risk by educating children at home. What we will determine is whether families who exhibit the specified characteristics are prima facie justified in educating their children at home under the conditions of interest. We argue that, for attentive parents, home education not only promotes greater intimacy, but also provides insurance against the loss of intimacy that may occur under certain conditions when children attend schools. (shrink)

REPRODUÇÃO EM NOVILHAS LEITEIRAS -/- INTRODUÇÃO -/- O principal objetivo da criação de substitutos em gado leiteiro é produzir uma novilha que tenha seu parto aos dois anos de idade (23 a 25 meses) e com um peso de 550 a 580 kg. O manejo reprodutivo das novilhas começa quando estas atingem 14 ou 15 meses de idade e um peso de 350 a 370 kg. A produção de novilhas deve ser suficiente para substituir as vacas descartadas anualmente (25 a (...) 35%), e para contribuir com o crescimento do rebanho. Espera-se que em um gado leiteiro deva haver uma população de animais de reposição, desde um dia de vida até à fase de novilha ao parto, correspondendo pelo menos a 70 % do total das vacas (figura 1). -/- Figura 1: A meta do programa de produção de substitutos ou fêmeas de reposição consiste em uma novilha que chegue ao seu primeiro parto aos 24 ou 25 meses de idade, entre um peso de 550 a 580 kg. Elaborado pelo autor. -/- A produção de novilhas depende basicamente de três fatores: da fertilidade das vacas, ou seja, do número de bezerras nascidas anualmente; da mortalidade durante a criação e desenvolvimento; e da eficiência reprodutiva das novilhas. O manejo reprodutivo moderno das novilhas é orientado para a utilização da inseminação artificial, seja em um estro natural ou sincronizado. As novilhas representam a população animal geneticamente mais avançada no rebanho, portanto, o mérito genético de suas crias obtidas por inseminação é maior do que o das crias das vacas adultas. Além disso, as crias das novilhas obtidas mediante a inseminação aceleram o avanço genético, uma vez que contribuem com uma proporção maior de substituições do rebanho em comparação com as crias das vacas de outras faixas etárias. Além disso, as novilhas são as fêmeas mais férteis do rebanho (porcentagem de concepção: 60 a 70% vs 30 a 40% em vacas), pelo que o custo do sêmen por gestação é menor em comparação com as vacas adultas, o que permite investir em melhores touros e em sêmen sexado. -/- 1. PUBERDADE -/- A puberdade é definida como a fase de desenvolvimento em que a fêmea apresenta o seu primeiro estro fértil. Regularmente as novilhas leiteiras, sob condições ótimas de manejo, chegam à puberdade entre 11 e 12 meses de idade, ou seja, antes de alavancar o peso recomendado para receber o primeiro serviço. Vale salientar que as novilhas podem ficar gestantes após a puberdade; no entanto, isto não é conveniente porque ainda não completou-se o seu desenvolvimento. Se ficarem gestantes nos primeiros ciclos estrais, as novilhas poderiam chegar ao parto com pouco desenvolvimento físico, o que provocaria distocias e baixa produção de leite (figura 2). A ativação do sistema neuroendócrino para que a bezerra atinja a puberdade é regulada principalmente pelo estado nutricional (condição corporal). A transição do anestro pré-puberal à ciclicidade puberal coincide com um aumento da condição corporal e das concentrações de insulina, IGF-I e leptina. Estes hormônios agem como sinais metabólicos no hipotálamo e hipófise que modificam a frequência de secreção das gonadotropinas, resultando na maturação folicular e ovulação. O atraso em relação à puberdade está diretamente relacionado com deficiências na alimentação; esta condição verifica-se em criações pouco tecnificadas, principalmente de pequenos e médios produtores. As novilhas que já atingiram o peso para receber o primeiro serviço e não apresentaram estro, devem ser examinadas por via retal para excluir possíveis anormalidades do desenvolvimento, tais como freemartinismo ou hipoplasia genital. -/- Figura 2: O fator mais importante que determina a puberdade é a nutrição. Bezerras bem alimentadas apresentam ciclos estrais aos 11 meses de idade e devem ser inseminadas aos 14 ou 15 meses de idade, com um peso de 350 a 370 kg. Acervo pessoal do autor. -/- 2. DETECÇÃO DE ESTRO E INSEMINAÇÃO ARTIFICIAL -/- A baixa eficiência na detecção de estros é o problema que mais afeta a eficiência reprodutiva das novilhas. De acordo com a duração do estro (8 a 18 horas), a observação das novilhas em períodos de 30 minutos durante a manhã e à tarde, permite detectar em estro até 70% das fêmeas, enquanto a observação contínua (24 horas) aumenta a eficiência na detecção até 95% (figuras 3 e 4). No manejo tradicional dos rebanhos leiteiros, as novilhas recebem pouca atenção por parte dos trabalhadores, o que resulta em baixa eficiência na detecção de estros (50 a 60%). Em diferença das vacas adultas em lactação, as novilhas estão menos expostas a fatores que diminuem a expressão do estro, portanto, com uma rotina de observação, de pelo menos duas horas na manhã (6h a 8h da manhã) e duas horas pela tarde até a noite (17h da tarde a 19h da noite), pode-se detectar até 90% das fêmeas no estro (figura 5). -/- Figura 3: O fator que mais influencia a idade ao primeiro parto é a baixa eficiência na detecção de estros, pelo que é recomendável a observação de estros com pessoal qualificado, em períodos de pelo menos duas horas pela manhã e duas à tarde. Acervo pessoal do autor. -/- Figura 4: Com a observação contínua é possível alcançar de 90 a 95% de eficiência na detecção de estros. Acervo pessoal do autor. -/- Figura 5: A inseminação deve ser realizada durante o período de receptividade sexual. Com boa eficiência na detecção de estros, a inseminação pode ser praticada no programa AM-PM e PM-AM, ou em apenas um turno de inseminação pela manhã (10:00), com bons resultados. -/- 3. TAXA DE PRENHEZ -/- O melhor indicador de eficiência reprodutiva é a taxa de prenhez. Este indicador refere-se à proporção de animais gestantes do total elegível para inseminação, num período equivalente a um ciclo estral. Como já se descreveu no trabalho Fisiologia do Estro e do Serviço na Reprodução Bovina, este indicador considera a eficiência na detecção de estros e a porcentagem de concepção, e reflete com maior objetividade a eficácia do manejo reprodutivo. Este parâmetro pode ser melhorado através de um aumento da proporção de novilhas detectadas em estro, o que se obtém aumentando o tempo de observação e aplicando técnicas de sincronização do estro (figura 6). -/- 4. INSEMINAÇÃO DE NOVILHAS COM SÊMEN SEXADO -/- A utilização de sêmen sexado é uma boa opção para a produção de novilhas de reposição. Com a nova tecnologia disponível para a separação de espermatozoides com o cromossomo x, é possível alcançar até 90% de crias fêmeas; no entanto, o processo de separação de espermatozoides tem baixa eficiência, o que limita o número de espermatozoides por palheta. As palhetas de inseminação com sêmen sexado contém de dois a três milhões de espermatozoides (doses de sêmen não sexado têm de 20 a 30 milhões). De acordo com os dados de fertilidade de gados comerciais, as novilhas inseminadas com sêmen sexado mostram de 10 a 20% menor concepção que novilhas inseminadas com sêmen não sexado, o que desencoraja o seu uso. Causas de baixa fertilidade não são conhecidas, no entanto, estão associadas com a menor concentração espermática e com alguns danos nos espermatozoides provocados pelo processo de separação. No entanto, o uso de sêmen sexado é uma opção viável para aumentar a produção de novilhas no rebanho, e com o melhoramento dos processos de separação espermática em pouco tempo se converterá em uma prática de rotina nos estábulos (figura 7). -/- Figura 6: Uma técnica que aumenta a eficiência na detecção dos estros consiste em pintar a região da grupa. Quando esta pintura desaparece ou se nota que as novilhas estão "talhadas", devem ser apalpadas via retal para determinar se existem sinais genitais de estro. Acervo pessoal do autor. -/- Figura 7: As novilhas são as fêmeas mais férteis do rebanho, por isso o custo do sêmen por gestação é menor em comparação com as vacas adultas, o que permite investir em melhores touros e em sêmen sexado. Acervo pessoal do autor. 5. MONTA DIRIGIDA -/- A monta dirigida ou direta é uma opção prática e eficaz para emprenhar as novilhas. Neste sistema se introduz um touro com um grupo de novilhas, para que ele se encarregue de encontrar as fêmeas em estro e proceder a monta. Em rebanhos comerciais, o ideal é a utilização de um touro para 25 fêmeas. No entanto, com este manejo perde-se a oportunidade de utilizar a inseminação artificial e, com isso, a possibilidade de melhoria genética. -/- 6. PROGRAMAS DE SINCRONIZAÇÃO DE ESTROS -/- Os tratamentos para sincronizar o estro das novilhas possuem os mesmos fundamentos que os utilizados nas vacas. -/- 6.1 Prostaglandina F2a -/- A PGF2α é utilizada para a sincronização de estros em grupos de novilhas, e também é utilizada para a indução do estro individualmente, nas fêmeas que são examinadas por via retal e têm um corpo lúteo. A resposta dos animais tratados é variável; em novilhas pode-se alcançar até 95% de animais em estro. O tempo de manifestação do estro após a injeção é de 48 a 120 horas. -/- 6.1.1 Dupla injeção de PGF2a -/- Além da sincronização dos animais selecionados pela presença de um corpo lúteo diagnosticado por palpação retal, existem dois programas que não incluem a palpação retal. Por exemplo, na segunda-feira, ou no dia preferido, injeta-se PGF2α em todas as novilhas que se deseja inseminar. Cerca de 50% das novilhas manifestarão estro nas próximas 48 a 120 horas. As fêmeas que não mostrarem estro receberão uma segunda injeção na segunda-feira seguinte (intervalo de sete dias). As que apresentaram estro com a primeira injeção teriam um corpo lúteo nesse momento, enquanto as que não o manifestaram estavam em estro ou em metaestro; assim, ao repetir o tratamento sete dias depois, estas últimas novilhas teriam um corpo lúteo e responderiam à PGF2α (figura 8). No outro programa, é administrada duas doses de PGF2α com 11 dias de separação/intervalo. As novilhas podem ser inseminadas no estro observado, após qualquer uma das duas injeções. Este programa oferece uma boa sincroniza- ção após a segunda injeção e é o programa de escolha na sincronização das novilhas receptoras de embriões (figura 9). -/- Figura 8: Sincronização do estro com dupla injeção de PGF2a com 7 dias de diferença/intervalo. Elaborado pelo autor. -/- Figura 9: Sincronização do estro com dupla injeção de PGF2a com 11 dias de diferença/intervalo. Elaborado pelo autor. -/- 6.2 Progestágenos -/- Existe um tratamento que consiste na inserção, na parte externa da orelha, de um implante que contém norgestomet, que permanece na região auricular por nove dias. Além disso, o tratamento é complementado com a injeção intramuscular de valerato de estradiol e norgestomet, no momento da colocação do implante. O tempo de apresentação do estro a partir da remoção do implante é de 48 a 72 horas e a proporção de animais em estro muitas vezes se torna maior do que 80%. Outro tratamento é baseado na inserção intravaginal de dispositivos de liberação de progesterona. O dispositivo pode ser utilizado durante 12 dias ou o período de exposição pode ser encurtado, desde que seja acompanhado da injeção de uma dose luteolítica de PGF2α, um dia antes ou no momento da remoção do dispositivo. A fertilidade global conseguida após o serviço no estro sincronizado é similar à obtida no estro natural; porém, algumas novilhas são menos férteis, o que está associado com alterações no desenvolvimento folicular e alterações na relação temporal entre o estro e a ovulação. Observou-se que o tratamento com implantes de norgestomet combinados com a injeção de valerato de estradiol pode induzir comportamento estral em animais que não estão ciclando normalmente. Isso ocorre porque os níveis de estradiol, administrados no primeiro dia, persistem até o momento da remoção do implante. Assim, ao remover a fonte do progestágeno e ao haver concentrações altas de estradiol se desencadeia o estro, o qual em novilhas anéstricas não é acompanhado de ovulação, enquanto que em novilhas ciclando se altera a relação temporal entre o estro, pico pré-ovulatório de LH e ovulação. Bons resultados são alcançados quando o valerato de estradiol não é administrado e é substituído por uma injeção de PGF2α no momento da remoção do implante. Outro fator que tem sido associado com baixa fertilidade é o dia do ciclo em que o tratamento começa. Observou-se que quando coincide com a presença de um corpo lúteo (diestro), a porcentagem de concepção é maior do que quando não há um corpo lúteo (proestro). Isto ocorre porque a concentração sérica do progestágeno, por si só, não é capaz de suprimir a secreção pulsátil de LH, o que faz com que o folículo dominante presente no momento de iniciar o tratamento não sofra atresia e persista até o dia da retirada do progestágeno, convertendo-se no folículo ovulatório. Com isso, o folículo já envelheceu e o ovócito já sofreu alterações que reduzem o seu potencial para desenvolver um embrião viável. Quando o tratamento coincide com a presença de um corpo lúteo, a secreção de LH é efetivamente suprimida devido ao efeito aditivo da progesterona secretada pelo corpo lúteo e do progestágeno exógeno, inserido na vaca, o que provoca a reposição folicular. Em condições de campo, a seleção das vacas pela presença de um corpo lúteo antes de iniciar o tratamento com progestágenos é impraticável, uma vez que não é possível visualizá-lo, além disso essa prática/seleção não faria sentido, já que seria mais fácil tratar estes animais com dose ou doses de PGF2α. Atualmente existem tratamentos para eliminar folículos dominantes e promover uma nova onda folicular. -/- 6.3 Progestágenos orais -/- O acetato de melengestrol (MGA) é um progestágeno administrado por via oral. Em fêmeas bovinas é utilizado para melhorar a eficiência alimentar nos currais de engorda, o que se consegue através da inibição da apresentação do estro. Como todos os progestágenos, o MGA inibe a secreção de LH, eliminando assim a maturação do folículo e a ovulação. Após a remoção do MGA, o folículo dominante termina o seu desenvolvimento e as fêmeas apresentam estro em forma sincronizada. A dose de MGA por novilha é de 0,5 a 1 mg por dia, em tratamentos que variam de 9 a 14 dias. A apresentação comercial de MGA contém 0,22 mg do hormônio por 1 g do produto. O MGA pode ser facilmente misturado com qualquer concentrado ou grão moído. Após o último dia de tratamento, o estro se apresenta de dois a seis dias. O intervalo de remoção do MGA ao estro é mais longo quando comparado com outros progestágenos. Isto deve-se ao tempo de remoção do MGA, uma vez que enquanto um implante ou dispositivo intravaginal é removido abruptamente, o MGA pode continuar a ser absorvido enquanto é removido do trato gastrointestinal. Com tratamentos de 14 dias podem-se obter porcentagens de concepção menores em comparação com o estro natural, o que se deve em grande parte à ovulação de folículos persistentes. Um tratamento eficaz, que também melhora a fertilidade, consiste na administração de MGA durante 14 dias, seguido de uma injeção de PGF2α 15 ou 17 dias após a remoção do progestágeno. Com este programa, uma alta proporção de fêmeas teriam um corpo lúteo no momento da injeção da PGF2α e apresentariam estro com boa sincronização. Outro tratamento eficaz consiste na administração do MGA durante nove dias, mais uma dose de PGF2α ao nono dia; com este programa também se obtêm bons resultados em sincronização do estro e fertilidade. Este tratamento foi avaliado com novilhas holandesas e a porcentagem de fêmeas sincronizadas é elevada (95%). A porcentagem de concepção é semelhante à obtida no estro natural. Estes resultados são comparáveis aos obtidos com outros programas, como implantes de norgestomet ou dispositivos intravaginais de liberação de progesterona, mas com um custo significativamente menor (figura 10). -/- 6.4 Sincronização da ovulação e inseminação em tempo fixo -/- Em contraste com o observado em vacas em lactação, a resposta das novilhas aos programas de sincronização da ovulação e inseminação a tempo fixo é deficiente, o que se reflete em porcentagens de concepção de 20 a 35% menores que as novilhas inseminadas no estro natural. A causa desta resposta está relacionada com diferenças no desenvolvimento folicular; assim, nas novilhas o tempo de desenvolvimento do folículo dominante é mais rápido e o tempo de domínio é mais curto do que nas vacas em lactação. Desta forma, o folículo da onda folicular sincronizada com a injeção de GnRH sofre atresia antes da injeção de PGF2α, de tal forma que quando se induz a ovulação com a segunda injeção de GnRH, as novilhas têm folículos em diferentes estádios de desenvolvimento, o que provoca assincronia entre a ovulação e a inseminação artificial. -/- Figura 10: Programa de sincronização do estro com Acetato de Melengestrol (MGA). Elaborado pelo autor. -/- 7. MANEJO DO ANESTRO -/- Uma vez que as novilhas atingem a puberdade, apresentam ciclos estrais em intervalos de 21 dias que só são interrompidos pela gestação ou por alguma patologia. O anestro patológico é raro em novilhas; no entanto, surgem casos de piometra e cistos luteinizados, que são tratados com uma dose de PGF2α. Também se observam anormalidades de desenvolvimen- to, tais como freemartinismo e hipoplasia genital, patologias que não têm tratamento; somente 8% das novilhas freemartin são férteis. O anestro funcional (as novilhas manifestam estro, mas não são detectadas) é frequen- te e está diretamente relacionado com a eficiência na detecção de estros. As novilhas com idade e peso para se integrarem no programa reprodutivo e não apresentarem sinais de estro devem ser examinadas retalmente para diagnosticar a causa do anestro. Se, durante a palpação retal, as novilhas tiverem um corpo lúteo são tratadas nesse momento com PGF2α, os animais sem corpo lúteo podem receber uma injeção de PGF2α, sete dias depois. Este programa sincroniza o estro e aumenta a probabilidade de o detectar (figura 11). -/- Figura 11: As novilhas com idade e peso para se integrarem no programa reprodutivo e não mostrarem sinais de estro devem ser verificadas via retal para diagnosticar a causa do anestro. Arquivo pessoal do autor. -/- 8. MANEJO DA NOVILHA INFÉRTIL -/- A fertilidade das vacas leiteiras diminuiu nos últimos 30 anos, enquanto a fertilidade das novilhas não se alterou; após a primeira inseminação, entre 60 e 70% das novilhas emprenham. O objetivo do programa reprodutivo é conseguir que 90% das novilhas gestem nos primeiros três serviços. Desta forma, esta proporção de animais daria à luz antes dos 25 meses de idade. É comum que 10% das novilhas se transformem em animais repetidores, ou seja, novilhas com mais de três serviços inférteis. A causa da falha na concepção de novilhas deve-se principalmente à morte embrionária precoce. Uma causa importante da falha na concepção das novilhas repetidoras são as patologias adquiridas no aparelho reprodutivo; é comum encontrar aderências ovarianas e salpingite. Provavelmente, esses problemas são consequência de alguma infecção adquirida durante a criação. Diversos tratamentos hormonais têm sido testados para resolver o problema de infertilidade em novilhas repetidoras e os resultados obtidos ainda são deficientes. Como estes tratamentos não apresentam resultados consistentes, a melhor forma de mitigar o problema de infertilidade nas novilhas é melhorando as práticas de inseminação, ou seja, o momento da inseminação, o manejo do sêmen e a técnica de inseminação empregada. Além disso, a melhor técnica para aumentar a proporção de novilhas prenhes no rebanho é aumentar a eficiência da detecção de estros. -/- 9. RESUMO -/- As novilhas devem parir aos dois anos de idade (23 a 25 meses). O peso ao parto deve ser de 550 a 580 kg. O manejo reprodutivo começa aos 14 ou 15 meses de idade, com um peso de 350 a 370 kg. As palhetas de sêmen sexado contêm de 2 a 3 milhões de espermatozoides. As doses de sêmen não sexado contêm de 20 a 30 milhões de espermatozoides. A porcentagem de concepção das novilhas inseminadas com sêmen sexado é 10 a 20% menor do que com sêmen não sexado. Com sêmen sexado se obtém entre 90 e 95% de fêmeas. A porcentagem de concepção com programas de IATF é de 20 a 35% menor que nas novilhas inseminadas no estro natural. Cerca de 90% das novilhas devem ficar prenhes nos primeiros três serviços. Devem ser produzidas novilhas para substituir as vacas que são descartadas anualmen- te (25 a 35%). Espera-se que um gado leiteiro tenha ao dispor uma população de animais de reposição, desde um dia de vida até a etapa de novilha ao parto, correspondente a, pelo menos, 70 % do total das vacas. -/- REFERÊNCIAS BIBLIOGRÁFICAS -/- AUAD, Alexander Machado et al. Manual de bovinocultura de leite. Brasília: LK Editora, 2010. BRICKELL, J. S.; MCGOWAN, M. M.; WATHES, D. C. Effect of management factors and blood metabolites during the rearing period on growth in dairy heifers on UK farms. Domestic animal endocrinology, v. 36, n. 2, p. 67-81, 2009. DE VRIES, A. et al. Exploring the impact of sexed semen on the structure of the dairy industry. Journal of Dairy Science, v. 91, n. 2, p. 847-856, 2008. Fertilidade em Vacas Leiteiras: Fisiologia e Manejo. Fisiologia do Estro e do Serviço na Reprodução Bovina. FERREIRA, A. M. Manejo reprodutivo de bovinos leiteiros: práticas corretas e incorretas, casos reais, perguntas e respostas. Edição do autor, Juiz de Fora, 2012. FERREIRA, A. de M. Reprodução da fêmea bovina: fisiologia aplicada e problemas mais comuns (causas e tratamentos). Juiz de Fora: Minas Gerais–Brasil, p. 422, 2010. GALINA, Carlos; VALENCIA, Javier. Reproducción de los animales domésticos. 2006. GONÇALVES, J. N. Manual do produtor de leite. Viçosa, MG: Aprenda Fácil, 2012. HEINRICHS, A. J. Raising dairy replacements to meet the needs of the 21st century. Journal of dairy science, v. 76, n. 10, p. 3179-3187, 1993. HOFFMAN, P. C. Optimum body size of Holstein replacement heifers. Journal of Animal Science, v. 75, n. 3, p. 836-845, 1997. NEIVA, R. S. Criação eficiente de bezerros e novilhas. Lavras: Autor, 2013. NEIVA, Rogério Santoro. Produção de bovinos leiteiros. Lavras: UFLA, 1998. PEREIRA, E. S. et al. Novilhas leiteiras. Graphiti Gráfica e Editora LTDA, Fortaleza, Ceará, 2010. CARVALHO, B. C. Manejo reprodutivo de novilhas leiteiras. In. SENAR. Curso de reprodução e genética em bovinocultura de leite. Coronel Pacheco: Senar, 2021. YOUNGQUIST, Robert S.; THRELFALL, W. R. Large animal theriogenology. 2007. (shrink)

The 20th century was full of epoch-making events that left their mark on it. From the outbreak of the First World War and the fall of The German Empire, through numerous political and social shake-ups, until the outbreak of the Second World War, that became the event without precedent in the history of mankind. The First World War meant in many cases not only the end of some form of rule – the monarchy, but also, and maybe first of all, (...) it originated the increase of xenophobia and anti-Semitism. The post-war years were identified with economic problems on a large scale that had influence on every aspect of life. Revolutions and an attempt to create the first democratic country in the history of Germany influenced the outlook of the world and beliefs of all people that lived at that time. The German people were under the influence of ideas and ideals of the educated social class, but also of Catholic child rearing or Protestant values. In that social and political situation wrote Clemens Graf von Galen in 1932 the treatise on Die Pest des Laizismus und ihre Erscheinungsformen, in which he carried out a critical analysis of all occurrences of social, political, religious-morals and economical life that took place in the falling Weimar Republic. Not in a direct way he also took a stand on growing in strength of the National Socialist German Workers’ Party. The under mentioned article is aimed at presenting a profile of Clemens August Graf von Galen, later the Bishop of Münster, cardinal and the Blessed of the Roman Catholic Church, the origins of his beliefs that were reflected in his treatise Die Pest des Laizismus und ihre Erscheinungsformen. (shrink)

Can a person be harmed or wronged by being brought into existence? Can a person be benefited by being brought into existence? Following David Heyd, I refer to these questions as “genethical questions”. This chapter examines three broad approaches to genethics: the no-faults model, the dual-benchmark model, and the parity model. The no-faults model holds that coming into existence is not properly subject to moral evaluation, at least so far as the interests of the person that is to be brought (...) into existence are concerned. The dual benchmark model allows that coming into existence can be subject to moral evaluation, but holds that our judgments about the kinds of lives worth starting ought not be aligned with our judgments about the kinds of lives worth sustaining. I argue against both the no-faults and dual benchmark models. In their place, I argue for a parity approach to genethics, according to which our judgments about the conditions under which life is worth creating ought to be constrained by our judgments about the conditions under which life is worth continuing. (shrink)