R. G. Bury’s translations of Sextus Empiricus for the Loeb Library have served English language readers well, but new translations, taking account of advances in scholarship since Bury’s day, have long been needed. We now have two new English versions of the Outlines of Pyrrhonism. They take different and in some ways complementary approaches to the task.

E=mc 2 is found to be a special case ofE=σ ±1cn, where σ is any one of four susceptibilities, namely electric, magnetic, gravitational, and elastic. Letl be length,t time,Δt time dilation, andΔl a measure of Fitzgerald-Lorentz contraction. A particle is stated to be the manifestation of a collection of susceptibilities which arise when(Δl)/1=(Δt)/t. Then(ΔE)/E=5 (Δt)/2t=±(Δσ)/σ. Corresponding to susceptibility, special energy particles are postulated which exhibitSU(3) symmetry, Related to the susceptibilities are five new Heisenberg uncertainty relations. Three new conservation laws for (...) particles are proposed. (shrink)

Evolutionary changes in traits that affect both ecological divergence and mating signals could lead to reproductive isolation and the formation of new species. Insect cuticular hydrocarbons (CHCs) are potential examples of such dual traits. They form a waxy layer on the cuticle of the insect to maintain water balance and prevent desiccation, while also acting as signaling molecules in mate recognition and chemical communication. Because the synthesis of these hydrocarbons in insect oenocytes occurs through a common biochemical pathway, natural or (...) sexual selection on one role may affect the other. In this review, we explore how ecological divergence in insect CHCs can lead to divergence in mating signals and reproductive isolation. We suggest that the evolution of insect CHCs may be ripe models for understanding ecological speciation. (shrink)

When experimental participants are given the chance to reflect and revise their initial judgments in a dynamic conversational context, do their responses to philosophical scenarios differ from responses to those same scenarios presented in a traditional static survey? In three experiments comparing responses given in conversational contexts with responses to traditional static surveys, we find no consistent evidence that responses differ in these different formats. This aligns with recent findings that various manipulations of reflectiveness have no effect on participants’ judgments (...) about philosophical scenarios. Although we did not find a consistent quantitative effect of format (conversation vs. static survey), conversational experiments still provide qualitative insights into debates about how participants are understanding (or misunderstanding) the scenarios they read in experimental studies, whether they are replacing difficult questions with questions that are more easily answered, and how participants are imagining the scenarios they read in ways that differ from what is explicitly stated by experimenters. We argue that conversational experiments—"Socratic questionnaires"—help show what is going on “under the hood” of traditional survey designs in the experimental investigation of philosophical questions. (shrink)

With the potential to process the world's agricultural and food waste, provide sustainable fodder for livestock, aquaculture, and pet animals, as well as act as a source of novel biomolecules, the black soldier fly, Hermetia illucens, has been launched into the leading position within the insects as feed industry. Fulfilment of these goals, however, requires mass‐rearing facilities to have a steady supply of neonate larvae, which in‐turn requires an efficient mating process to yield fertile eggs; yet, little is known about (...) adult reproductive behavior, nor what physiological factors lead to its emergence. Moreover, fertile egg production tends to be highly variable in colony. Therefore, this review brings together what is currently known of the organismal biology of H. illucens, compiling information on adult morphology, physiology, biogeography, genomics, and behavioral ecology. As a holistic synthesis, it highlights several directions of interest for research to follow. (shrink)

Simple Heuristics That Make Us Smart invites readers to embark on a new journey into a land of rationality that differs from the familiar territory of cognitive science and economics. Traditional views of rationality tend to see decision makers as possessing superhuman powers of reason, limitless knowledge, and all of eternity in which to ponder choices. To understand decisions in the real world, we need a different, more psychologically plausible notion of rationality, and this book provides it. It is about (...) fast and frugal heuristics--simple rules for making decisions when time is pressing and deep thought an unaffordable luxury. These heuristics can enable both living organisms and artificial systems to make smart choices, classifications, and predictions by employing bounded rationality. But when and how can such fast and frugal heuristics work? Can judgments based simply on one good reason be as accurate as those based on many reasons? Could less knowledge even lead to systematically better predictions than more knowledge? Simple Heuristics explores these questions, developing computational models of heuristics and testing them through experiments and analyses. It shows how fast and frugal heuristics can produce adaptive decisions in situations as varied as choosing a mate, dividing resources among offspring, predicting high school drop out rates, and playing the stock market. As an interdisciplinary work that is both useful and engaging, this book will appeal to a wide audience. It is ideal for researchers in cognitive psychology, evolutionary psychology, and cognitive science, as well as in economics and artificial intelligence. It will also inspire anyone interested in simply making good decisions. (shrink)

In this article we attend to recent critiques of psychometric applications of life history theory to variance among humans and develop theory to advance the study of latent LH constructs. We then reanalyze data previously examined by Richardson et al., 2017, https://doi.org/10.1177/1474704916666840 to determine whether previously reported evidence of multidimensionality is robust to the modeling approach employed and the structure of LH indicators is invariant by sex. Findings provide further evidence that a single LH dimension is implausible and that researchers (...) should cease interpreting K-factor scores as empirical proxies for LH speed. In contrast to the original study, we detected a small inverse correlation between mating competition and Super-K that is consistent with a trade-off. Tests of measurement invariance across the sexes revealed evidence of metric invariance, consistent with the theory that K is a proximate cause of its indicators; however, evidence of partial scalar invariance suggests use of scores likely introduces bias when the sexes are compared. We discuss limitations and identify approaches that researchers may use to further evaluate the validity of the K-factor and other applications of LH to human variation. (shrink)

Nonhuman primates don’t have formal kinship systems, but genetic relatedness shapes patterns of residence, behavior, mating preferences, and cognition in the primate order. The goal of this article is to provide insight about the ancestral foundations on which the first human kinship systems were built. In order for evolution to favor nepotistic biases in behavior, individuals need to have opportunities to interact with their relatives and to be able to identify them. Both these requirements impose constraints on the evolution of (...) kinship bonds in primate species. For nonhuman primates and many other mammals, maternal care generates close ties between mothers and offspring and among littermates. For species in which mother–offspring bonds extend beyond weaning, associations with the mother also generate familiarity among siblings of different ages. For species with female philopatry, mother–offspring ties provide the foundation for lifelong relationships between mothers and daughters, and dense matrilineal kin networks. However, several factors constrain the development of kinship bonds in nonhuman primates. First, dispersal strategies, which are designed to reduce inbreeding, bias kinship networks in favor of the philopatric sex. Second, hostile relationships between groups mean that kin ties are usually severed when individuals move from one group to another. Third, in species with polygynandrous mating systems, uncertainty about paternity and restricted periods of male reproductive monopoly limit the scope for development of ties among fathers and offspring, paternal siblings, or extended paternal kin networks. In this article, I explore the impact of these factors on the evolution of ancestral human kinship systems. (shrink)

Previous research in North America has supported the view that male involvement in committed, romantic relationships is associated with lower testosterone (T) levels. Here, we test the prediction that undergraduate men involved in committed, romantic relationships (paired) will have lower T levels than men not involved in such relationships (unpaired). Further, we also test whether these differences are more apparent in samples collected later, rather than earlier, in the day. For this study, 107 undergraduate men filled out a questionnaire and (...) collected one saliva sample (from which a subject’s T level was measured) at various times across the day. As in previous studies, men involved in committed, romantic relationships had lower salivary T levels, though only during later times of the day. Furthermore, additional analysis of the variation among unpaired subjects indicated that men without prior relationship experience had lower T levels than experienced men. Finally, while paired men as a group had lower T levels than unpaired men, those men at the earliest stage (less than six months) of a current relationship had higher T levels than unpaired men as well as men in longer-term relationships. These results suggest that variation in male testosterone levels may reflect differential behavioral allocation to mating effort. (shrink)

Among the quantificational notions neglected by classical logic are "many," "few," and "nearly all." Despite the apparent vagueness associated with these terms in ordinary discourse, in specific contexts we can and do draw strict inferences from statements in which they occur. In this pioneering work, Altham has attempted to uncover something of the formal logic that justifies such inferences. He begins by showing the mutual interdefinability of the three terms. If negation and any one of them are taken as primitive, (...) the other two are definable in terms of these. Selecting as his basic semantic notion the idea of a manifold or many-membered-set, he shows it is only necessary to fix upon a number n, greater than one, to represent the least number of elements to constitute a specific manifold and then one can construct a natural deductive system which uses the standard predicate logic. He develops at great length a weak system that yields principles of inference which are valid in every non-empty domain and in which the classical predicate logic appears as a limiting case. One point that emerges is that the three plurality operators may all be exhibited as involving a double quantification not characteristic of "some," "none," or "all." Next, two stronger systems are developed more briefly which are valid only in many-membered domains. The strongest can represent the largest set of informal arguments and seems to be the most natural of the three. Nevertheless, since these three systems admittedly do not give an exhaustive account of the use of these quantifiers in informal discourse, Altham explains three further systems which correspond more closely to the natural language use of these terms. Finally an appendix indicates what modifications would be required for an intuitionistic logic like Heyting's or the minimal logic of Kolmogorov-Johansson. The text is clearly written and requires no greater logical sophistication to understand than would be needed to follow Lemmon's Beginning Logic or Mates' Elementary Logic.--A. B. W. (shrink)

Patterns of three variables of reproductive strategies in male New World primates are examined: (i) how males obtain access to potential mates; (ii) how males obtain actual mating opportunities; and (iii) how males affect infant survival and female reproductive success. Male opportunities to associate with females, whether by remaining in their natal groups, dispersing and forming new groups, or dispersing and taking over or joining established groups, are strongly influenced by local population densities and correlate with female reproductive rates (...) and the extent of female reproductive seasonality and synchrony. Differences in male mating success are affected by female accessibility, whether male-male and male-female relationships are hierarchical or egalitarian, and whether female reproduction is seasonally restricted. Patterns of male behavior toward infants, characterized as active assistance, overt interference, or benign tolerance, appear to co-vary with differences in the degree to which males can affect female reproductive rates.These qualitative analyses suggest that the reproductive strategies of male New World primates can be classified along a continuum ranging from conservative to daring depending on whether female reproductive rates are relatively slow or fast and whether reproduction is strongly or weakly linked to seasonal ecological variables. Males adopt the conservative strategy of staying in their natal groups, forfeiting exclusive mating opportunities, and treating infants with tolerance when female reproduction is constrained by ecological factors. Conversely, males adopt the more daring strategy of dispersing and competing when potential payoffs through their ability to affect female reproduction are high. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Literature 26.1 (2002) 157-172 [Access article in PDF] Symposium: On Ken Burns's "Jazz" Jazz: America's Classical Music? 1 Lee B. Brown I VIEWERS OF KEN BURNS'S third cultural epic "Jazz" probably fell into one of three categories. 2 Some found it gripping. Some found it grating. Some found it both at once.The series has unforgettable moments: spectacular jitterbug sequences; Jimmy Lunceford's horn men fanning their trumpet bells (...) with hat mutes in sync; the close-up of the whirring cross-hand drumming of Art Blakey; the bitter-sweet glance Billie Holiday and Lester Young exchange in their last filmed appearance together; the occasional marriage of visuals to music. One riveting three minutes comes when the talking heads tune out, a 78-rpm disk of Louis Armstrong's "West End Blues" is set spinning, and the thrilling notes pour out on a carousel of visual imagery—finally freeze-framing on the face of the young genius himself.On the downside, the series is massively repetitious. As a result of Burns's decision to track two major figures—Louis Armstrong and Duke Ellington—from cradle to grave, the same cuts of Armstrong appear again and again, no matter what the time frame. Some of the series' commentators are particularly annoying—the fiddler of Burns's Civil War series, Matt Glaser, for instance, with his fatuous theories [End Page 157] about Louis Armstrong and Albert Einstein. And the documentary's heavy load of social freight—by Wynton Marsalis, and his mentors Albert Murray and Stanley Crouch 3 —threatens to flatten the music.The series is designed as informative entertainment, not Jazz 101. But Burns pays a price here, as he did in his documentary about baseball, in which not even the basics of the game, let alone any of the subtleties, were explained. In "Jazz" we get no explanation of what Jelly Roll Morton did to transform ragtime into jazz. (The series could easily have pressed Morton himself into service. With no sacrifice of his considerable charm, Morton did explain it, beautifully, in his recorded Library of Congress interviews. 4) Although the swing era gets big billing, no attempt is made to explain how swing rhythm actually works, as contrasted with earlier practices. (I have watched swing drummer Panama Francis entertain a packed hall with a brief but riveting illustration of how it works.)As jazz history, the film also has problems. Some legendary figures are resurrected unconvincingly. When Marsalis tells us what the legendary trumpet player Buddy Bolden sounded like, the illustrative off-camera trumpet is Marsalis's, not Bolden's, who embedded not one note in a record groove. Further, we face the tiresomely obvious problem of omissions. We hear nothing of Albert Ayler, Keith Jarrett, Sun Ra, Mildred Bailey, Benny Carter, Lennie Tristano, Erroll Garner, Eric Dolphy, Art Pepper, or Woody Herman. All we learn about Bill Evans—whose influence on jazz piano was huge—is that Miles Davis hired him even though he was white. Omissions are inevitable, of course. But there is a muted pattern to the exclusions. It was impossible for the series to avoid Benny Goodman, given his central role in the swing era. But white figures are too often either ignored or treated as alienated outsiders. We hear New York Times columnist Margo Jefferson opine that Bix Beiderbecke drank himself to death because he wasn't allowed to play with black musicians. In fact, many of the greatest players—white and black—never played with musicians of their own caliber.Most figures covered in the film are treated either with respect or with reverence. But things get nasty when matters turn to avant-gardists. Thus, Branford Marsalis—Wynton's talented brother—singles out the volcanic pianist Cecil Taylor for a particularly hostile attack. 5 Instead of explaining what Ornette Coleman meant by "free jazz," Albert Murray tells us that jazz is, by definition, free music—and by implication, that Coleman's concept must be fatuous. And Wynton has complained [End Page 158] elsewhere about a jazz avant-garde retreat into what he calls "a... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Literature 26.1 (2002) 157-172 [Access article in PDF] Symposium: On Ken Burns's "Jazz" Jazz: America's Classical Music? 1 Lee B. Brown I VIEWERS OF KEN BURNS'S third cultural epic "Jazz" probably fell into one of three categories. 2 Some found it gripping. Some found it grating. Some found it both at once.The series has unforgettable moments: spectacular jitterbug sequences; Jimmy Lunceford's horn men fanning their trumpet bells (...) with hat mutes in sync; the close-up of the whirring cross-hand drumming of Art Blakey; the bitter-sweet glance Billie Holiday and Lester Young exchange in their last filmed appearance together; the occasional marriage of visuals to music. One riveting three minutes comes when the talking heads tune out, a 78-rpm disk of Louis Armstrong's "West End Blues" is set spinning, and the thrilling notes pour out on a carousel of visual imagery—finally freeze-framing on the face of the young genius himself.On the downside, the series is massively repetitious. As a result of Burns's decision to track two major figures—Louis Armstrong and Duke Ellington—from cradle to grave, the same cuts of Armstrong appear again and again, no matter what the time frame. Some of the series' commentators are particularly annoying—the fiddler of Burns's Civil War series, Matt Glaser, for instance, with his fatuous theories [End Page 157] about Louis Armstrong and Albert Einstein. And the documentary's heavy load of social freight—by Wynton Marsalis, and his mentors Albert Murray and Stanley Crouch 3 —threatens to flatten the music.The series is designed as informative entertainment, not Jazz 101. But Burns pays a price here, as he did in his documentary about baseball, in which not even the basics of the game, let alone any of the subtleties, were explained. In "Jazz" we get no explanation of what Jelly Roll Morton did to transform ragtime into jazz. (The series could easily have pressed Morton himself into service. With no sacrifice of his considerable charm, Morton did explain it, beautifully, in his recorded Library of Congress interviews. 4) Although the swing era gets big billing, no attempt is made to explain how swing rhythm actually works, as contrasted with earlier practices. (I have watched swing drummer Panama Francis entertain a packed hall with a brief but riveting illustration of how it works.)As jazz history, the film also has problems. Some legendary figures are resurrected unconvincingly. When Marsalis tells us what the legendary trumpet player Buddy Bolden sounded like, the illustrative off-camera trumpet is Marsalis's, not Bolden's, who embedded not one note in a record groove. Further, we face the tiresomely obvious problem of omissions. We hear nothing of Albert Ayler, Keith Jarrett, Sun Ra, Mildred Bailey, Benny Carter, Lennie Tristano, Erroll Garner, Eric Dolphy, Art Pepper, or Woody Herman. All we learn about Bill Evans—whose influence on jazz piano was huge—is that Miles Davis hired him even though he was white. Omissions are inevitable, of course. But there is a muted pattern to the exclusions. It was impossible for the series to avoid Benny Goodman, given his central role in the swing era. But white figures are too often either ignored or treated as alienated outsiders. We hear New York Times columnist Margo Jefferson opine that Bix Beiderbecke drank himself to death because he wasn't allowed to play with black musicians. In fact, many of the greatest players—white and black—never played with musicians of their own caliber.Most figures covered in the film are treated either with respect or with reverence. But things get nasty when matters turn to avant-gardists. Thus, Branford Marsalis—Wynton's talented brother—singles out the volcanic pianist Cecil Taylor for a particularly hostile attack. 5 Instead of explaining what Ornette Coleman meant by "free jazz," Albert Murray tells us that jazz is, by definition, free music—and by implication, that Coleman's concept must be fatuous. And Wynton has complained [End Page 158] elsewhere about a jazz avant-garde retreat into what he calls "a... (shrink)

Zinacantec Family Homesign is a new sign language emerging spontaneously over the past three decades in a single family in a remote Mayan Indian village. Three deaf siblings, their Tzotzil-speaking age-mates, and now their children, who have had contact with no other deaf people, represent the first generation of Z signers. I postulate an augmented grammaticalization path, beginning with the adoption of a Tzotzil cospeech holophrastic gesture—meaning “come!”—into Z, and then its apparent stylization as an attention-getting sign, followed by (...) grammatical regimentation and pragmatic generalization as an utterance initial change of speaker or turn marker. (shrink)

Mammalian vomeronasal receptors respond to pheromones conveying information on gender, reproductive status and individual recognition. The question arises as to how this information is coded, which parts of the code require combinatorial activity and whether or not there are specific receptor neurons committed to sex discrimination. Are there receptor neurons that are committed to responding for female or male pheromones? Is there a sex difference for the proportion of these receptors, bearing in mind that it is very much in the (...) male's interest to distinguish the restricted oestrous phase of the female's cycle in order to successfully mate? Perhaps more intriguing is the complexity of individual recognition and whether or not the vomeronasal receptors actually possess this capacity. A recent paper in Science1 by Ron Yu and colleagues addresses these issues by literally visualising patterns of activity in VNO slices and determining what information is common across different individuals and what distinguishes them. BioEssays 30:802–805, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

The extreme sexual size dimorphism in spiders has motivated studies for many years. In many species the male can be very small relative to the female. There are several hypotheses trying to explain this fact, most of them emphasizing the role of energy in determining spider size. The aim of this paper is to review the role of energy in sexual size dimorphism of spiders, even for those spiders that do not necessarily live in high foliage, using physical and allometric (...) principles. Here we propose that the cost of transport or equivalently energy expenditure and the speed are traits under selection pressure in male spiders, favoring those of smaller size to reduce travel costs. The morphology of the spiders responds to these selective forces depending upon the lifestyle of the spiders. Climbing and bridging spiders must overcome the force of gravity. If bridging allows faster dispersal, small males would have a selective advantage by enjoying more mating opportunities. In wandering spiders with low population density and as a consequence few male–male interactions, high speed and low energy expenditure or cost of transport should be favored by natural selection. Pendulum mechanics show the advantages of long legs in spiders and their relationship with high speed, even in climbing and bridging spiders. Thus small size, compensated by long legs should be the expected morphology for a fast and mobile male spider. (shrink)

Religious beliefs, including those about an afterlife and omniscient spiritual beings, vary across cultures. We theorize that such variations may be predictably linked to ecological variations, just as differences in mating strategies covary with resource distribution. Perhaps beliefs in a soul or afterlife are more common when resources are unpredictable, and life is brutal and short.

SummaryPedigree structures of 161 uncle/niece-aunt/nephew and 4420 first cousin consanguineous marriages registered during the 19th and 20th centuries in two large and very different Spanish regions have been analysed and their genetic consequences evaluated. The frequencies of the different pedigree subtypes within each degree of relationship were quite similar in both populations despite significant heterogeneity in inbreeding patterns. The mean X-linked inbreeding coefficient for each type of cousin mating was calculated and compared to that expected for autosomal genes. The effect (...) of genealogical structure on theFx/Fradio was compared to different cultural populations worldwide. Preferentiality and avoidance of close consanguinity along with specific types of pedigrees are discussed on the basis of premarital migration and sociocultural rules still deeply rooted in certain human groups. By admitting that the observedFxcoefficient is usually higher thanFin most human populations some remarks have been made in terms of population genetic risk. (shrink)

The evolutionary origin of human pair-bonds is uncertain. One hypothesis, supported by data from forgers, suggests that pair-bonds function to provision mothers and dependent offspring during lactation. Similarly, public health data from large-scale industrial societies indicate that single mothers tend to wean their children earlier than do women living with a mate. Here we examine relations between pair-bond stability, alloparenting, and cross-cultural trends in breastfeeding using data from 58 “traditional” societies in the Standard Cross-Cultural Sample (SCCS). Analyses show that stable (...) conjugal relationships were associated with significantly later weaning among the societies in the SCCS. The relationship between pair-bond stability and age at weaning was not mediated by women’s ability to provision themselves or women’s kin support. Availability of alloparental care was also inversely related to age at weaning, and the association was not significantly reduced after controlling for frequency of divorce. This study indicates that among a woman’s kin relationships, a pair-bond with a child’s father is especially supportive of breastfeeding. These cross-cultural findings are further evidence that human pair-bonds may have evolved to support lactation. (shrink)

Stanovich & West (S&W) appear to overlook the adaptivity of variation. Behavioral variability, both between and within individuals, is an absolute necessity for phylogenetic and ontological adaptation. As with all heritable characteristics, inter-individual behavioral variation is the foundation for natural selection. Similarly, intra-individual variation allows a broad exploration of potential solutions. Variation increases the likelihood that more optimal behaviors are available for selection. Four examples of the adaptivity of variation are discussed: (a) Genetic variation as it pertains to behavior and (...) natural selection; (b) behavioral and cognitive aspects of mate selection which may facilitate genetic diversity; (c) variation as a strategy for optimizing learning through greater exploration; and (d) behavioral variation coupled with communication as a means to propagate individually discovered behavioral success. (shrink)

Most research on mate choice in modern societies is based on data that may or may not reflect actual mating behavior (e.g., stated preferences, personal advertisements). In the present study, real-life matings were reported by a large representative sample of men and women (N = 1,133). These data were used to test an evolutionary model in which mate choice is hypothesized to depend on resources potentially contributed to reproduction by each sex. Consistent with the model, it was found that (a) (...) men (but not women) of higher social status acquire more mating partners, suggesting that male status is an important criterion in female choice; (b) women’s (but not men’s) number of partners decreases linearly with age, suggesting that female reproductive potential is an important criterion in male choice; and (c) women (but not men) display a significant relationship between marital dissolution and promiscuity, suggesting that female sexual exclusivity is an important criterion in male choice. These results are discussed in relation to understanding mate choice mechanisms from behavioral data. (shrink)

Cross-cultural studies have revealed broad quantitative associations between subsistence practice and demographic parameters for preindustrial populations. One explanation is that variationin the availability of suitable weaning foods influenced the frequency and duration of breastfeeding and thus the length of interbirth intervals and the probability of child survival (the “weaning food availability” hypothesis). We examine the available data on weaning age variation in preindustrial populations and report results of a cross-cultural test of the predictions that weaning occurred earlier in agricultural and (...) pastoral populations because dairy and cereal production increased the availability of easily digestible, nutrientrich foods appropriate for weaning. We found that, contrary to predictions, supplementation with liquid foods other than breast milk was delayed in agricultural populations relative to less agriculturally dependent ones and complementary feeding with solid foods was delayed in pastoral populations relative to those less dependent on herding. Although the duration of breastfeeding was longer in populations dependent on hunting, there was no qualitative evidence that such populations lacked foods appropriate for weaning. The patterns observed suggest that the relationships between demography and subsistence observed among preindustrial societies cannot be explained by the “weaning food availability” hypothesis. We discuss the implications for understanding the mechanisms underlying prehistoric human demography, subsistence shifts, allocation to parenting and mating effort, and the evolutionary implications of tradeoffs between diet and disease. (shrink)

Why is female violence a taboo? We suggest that both men and women actively contribute to the creation of this stigma. Men may benefit because nonaggressive women may make better mothers and be more faithful and fertile. Females may benefit by downplaying their aggressive nature because they will be perceived as more valuable mates and because they will be more accepted within female social groups.

Advances in multiagent simulation techniques make it possible to study more realistic dynamics of complex systems and allow evolutionary theories to be tested. Here I use simulations to assess the relative importance of reproductive systems (haplodiploidy vs. diploidy), mate selection (assortative mating vs. random mating) and social economics (pay-off matrices of evolutionary games) in the evolutionary dynamics leading to the emergence of social cooperation in the provision of parental care. The simulations confirm that haplo-diploid organisms and organisms mating assortatively have (...) a higher probability for fixing alleles and require less favorable conditions for their fixation, than diploids or organisms mating randomly. The simulations showed that social behavior was most likely to emerge a) when the cost for parental investment was much lower than the benefits to the offspring, b) when cooperation improved synergistically the fitness of offspring compared to the corresponding egoistic behavior and c) when alleles coding for altruistic or social behavior could be rapidly fixed in the population, thanks to mechanisms such as haplo-diploidy and/or assortative mating. Cooperative social behavior always appeared if sociality conferred much higher fitness gains compared to non cooperative alternatives suggesting that the most important factors for the emergence and maintenance of social behavior are those based on energetic or efficiency considerations. The simulations, in congruence with the scant experimental evidence available, suggest that economic considerations rather than genetic ones are critical in explaining the emergence and maintenance of sociality. (shrink)

This response reinforces several major themes in our target article: (a) the importance of sex-specific, within-sex variation in mating tactics; (b) the relevance of optimality thinking to understanding that variation; (c) the significance of special design for reconstructing evolutionary history; (d) the replicated findings that women's mating preferences vary across their menstrual cycle in ways revealing special design; and (e) the importance of applying market phenomena to understand the complex dynamics of mating. We also elaborate on three points: (1) Men (...) who have indicators of genetic fitness may provide more direct benefits when female demand for extra-pair and short-term sex is very low; (2) both men and women track ecological cues to make mating decisions; and (3) more research on female orgasm is needed. (shrink)

The first monograph on Stoic modal logic. Part 1 discusses the Stoic notion of propositions (assertibles, axiomata): their definition; their truth-criteria; the relation between sentence and proposition; propositions that perish; propositions that change their truth-value; the temporal dependency of propositions; the temporal dependency of the Stoic notion of truth; pseudo-dates in propositions. Part 2 discusses Stoic modal logic: the Stoic definitions of their modal notions (possibility, impossibility, necessity, non-necessity); the logical relations between the modalities; modalities as properties of propositions; contingent (...) propositions; the relation between the Stoic modal notions and those of Diodorus Cronus and Philo of Megara; the role of ‘external hindrances’ for the modalities; the temporal dependency of the modalities; propositions that change their modalities; the principle that something possible can follow from something impossible; the interpretations of the Stoic modal system by B. Mates, M. Kneale, M. Frede, J. Vuillemin and M. Mignucci are evaluated. -/- For a shorter, updated, English version of Part 1 of the book see S. Bobzien, ‘Stoic Logic’, in K. Algra et al. (eds), The Cambridge History of Hellenistic Philosophy, Cambridge 1999, 92-157. For a shorter, updated, English version of Part 2 of the book see S. Bobzien 'Chrysippus' Modal Logic and its Relation to Philo and Diodorus', in K. Doering / Th. Ebert (eds) Dialektiker und Stoiker (Stuttgart 1993) 63-84. (shrink)

Leibniz's predicate-in-notion principle and some of its alleged consequences, by C. D. Broad.--On Leibniz's metaphysics, by L. Couturat.--Philosophical reflections of Leibniz on law, politics, and the state, by C. J. Friedrich.--The root of contingency, by E. M. Curley.--Monadology, by M. Furth.--Individual substance, by I. Hacking.--Leibniz on plenitude, relations, and the "reign of the law," by J. Hintikka.--Leibniz's theory of the ideality of relations, by H. Ishiguro.--Leibniz and Spinoza on activity, by M. Kneale.--Leibniz and Newton, by A. Koyré.--Plenitude and sufficient reason (...) in Leibniz and Spinoza, by A. O. Lovejoy.--Leibniz on possible worlds, by B. Mates.--Recent work on the philosophy of Leibniz, by B. Russell.--On Leibniz's explication of "necessary truth," by M. D. Wilson.--Bibliography (p. [421]-425). (shrink)

Two dogmas of empiricism, by W. V. Quine.--In defense of a dogma, by H. P. Grice and P. F. Strawson.--The analytic and the synthetic: an untenable dualism, by M. G. White.--Synonymity, by B. Mates.--The meaning of a word, by J. L. Austin.--Meaning and synonymy in natural languages, by R. Carnap.--Analytic-synthetic, by J. Bennett.--On "analytic," by R. M. Martin.--Selected bibliography (p. [188]-196).

I have three main objectives in this essay. First, in chapter 2, I shall put forward and justify what I call worldlessness, by which I mean the following: All truths (as well as falsehoods) are wholly independent of any circumstances, not only time and place but also possible worlds. It follows from this view that whatever is actually true must be taken as true with respect to every possible world, which means that all truths are (in a sense) necessary. However, (...) the account I shall propound is different from what is known in the trade as necessitarianism, i.e. the view that there is only one possible world, viz. the actual one, for the doctrine of the worldlessness of truth values, despite its commitment to the necessity of truths and falsehoods, is quite compatible with the idea of there being other possible worlds. Another important issue in chapter 2, explored in particular in section 2.12, is the claim that there is no real change in the world. Secondly, in chapter 3 I consider the eminent traditional argument for determinism, deriving from Aristotle, namely, logical determinism, i.e. determinism justified by an appeal to the logical principle of bivalence (that all proper statements, including those concerning the future, are either true or false). In this connection I try to show that, (i), the formulation of the conclusion of this argument as "Whatever will happen will happen of necessity" is implausible, at least from the modern point of view, (ii), the formulation as "Whatever will happen will happen inevitably" is more to the point, and (iii), on the basis of the worldless and timeless aspect advocated in chapter 2, this latter formulation is quite harmless, essentially amounting to the trivial statement, "Whatever will happen will happen". Thirdly, in chapter 4 I study theological determinism, or determinism that arises from God's supposed providential control over everything that happens. In this connection, I shall survey some historical accounts of the relation between human free will and determinism (not only theological but also causal determinism); the philosophers the views of whom I shall attend to include Chrysippus, St. Augustine, Boethius and Aquinas. I shall in particular consider G.W. Leibniz' theodicean aspirations, viz. his solution to the problem of evil and, especially, his compatibilist attempts to reconcile human free will with the strictly deterministic flow of actual events. I think it is important to try to explicate Leibniz' ingenious account of these matters, since it seems that it has not been fully appreciated in the literature, not even by contemporary Leibniz scholars (such as B. Mates, R.C. Sleigh, C. Wilson, R.M. Adams and D. Rutherford). In providing the Leibnizian compatibilist solution of the problem of determinism and freedom in chapter 4, I shall utilize the approach of chapter 2. (shrink)

Sexual selection processes have received much attention in recent years, attention reflected in interest in human mate preferences. Among these mate preferences are preferences for physical attractiveness. Preferences in and of themselves, however, do not fully explain the nature of the relationships that individuals attain. A tacit negotiation process underlies relationship formation and maintenance. The notion that preferences for physical attractiveness evolved under parasite-driven “good genes” sexual selection leads to predictions about the nature of trade-offs that individuals make between (...) class='Hi'>mates’ physical attractiveness and investment potential. These predictions and relevant data are explored, with a primary emphasis on women’s preferences for men’s qualities. In addition, further implications of trade-offs are examined, most notably (a) the impact of environmental variations on the nature of mating and (b) some effects of trade-offs on infidelity and male attempts to control women. (shrink)

In this article, James Gibson’s influential notion of “perceptual affordances” is applied to the romantic realm. The core idea of Gibson’s view rests on the possible, meaningful actions that the perceptual environment offers the animal. In order to sustain this idea, Gibson posits two additional major characteristics of affordances: (a) affordances are perceived in a direct cognitive manner, and (b) affordances have a unique ontological status that is neither subjective nor objective. While I accept the core idea, I have doubts (...) as to whether the two other characteristics are necessary in other types of affordances, such as social and romantic affordances. The romantic realm offers an abundance of many enticing affordances. In this regard, I discuss phenomena like the availability of a romantic alternative, romantic ambivalence, choosing a romantic partner, sexual fantasies, the road not taken, reciprocity, playing hard to get, cultivating backup mates, romantic affordances in old age and in the digital realm. In light of the abundance and complexity of romantic affordances in our current romantic environment, knowing the nature of these affordances is most useful from both pragmatic and theoretical viewpoints. (shrink)

The present author developed a calculus for the logic of ‘because’. In a recent paper in this journal, it has been claimed that the central inference rules for the logic are invalid and that the intuition upon which the rules are based is not accounted for. This note criticises these arguments and presents an independent argument in favour of the rules used in the logic.

This paper argues that since nonphysical souls lack a position in space, they cannot have the pairing relations that would allow them to interact with physical bodies. For example, if two rifles (A and B) are fired at the same time, and consequently Andy and Buddy are killed, we can only say that rifle A killed Andy while rifle B killed Buddy, rather than the other way around, if there are appropriate spatial relations (such as distance and orientation) that pair (...) Andy’s death to A’s firing, and Buddy’s death to B’s firing. But no such pairing relations are available to nonphysical minds that lack spatial positions altogether. And attributing spatial location to nonphysical souls raises more problems than it solves, such as how to find particular souls at particular locations, how souls taken to be geometric points in space could retain enough structure to have sufficient causal powers to influence bodies, and why spatial entities more robust than points shouldn’t simply be conceived of as exotic physical entities like astral bodies. -/- 1. The Problem -- 2. Descartes and Mental Causation -- 3. Causation and the “Pairing” Problem -- 4. Causation and Space -- 5. Can We Locate Souls in Space? (shrink)

Human beings persist in an extraordinary range of ecological settings, in the process exhibiting enormous behavioural diversity, both within and between populations. People vary in their social, mating and parental behaviour and have diverse and elaborate beliefs, traditions, norms and institutions. The aim of this theme issue is to ask whether, and how, evolutionary theory can help us to understand this diversity. In this introductory article, we provide a background to the debate surrounding how best to understand behavioural diversity using (...) evolutionary models of human behaviour. In particular, we examine how diversity has been viewed by the main subdisciplines within the human evolutionary behavioural sciences, focusing in particular on the human behavioural ecology, evolutionary psychology and cultural evolution approaches. In addition to differences in focus and methodology, these subdisciplines have traditionally varied in the emphasis placed on human universals, ecological factors and socially learned behaviour, and on how they have addressed the issue of genetic variation. We reaffirm that evolutionary theory provides an essential framework for understanding behavioural diversity within and between human populations, but argue that greater integration between the subfields is critical to developing a satisfactory understanding of diversity. (shrink)

_The purpose_ of the article is to comprehend the Husserlian model of constituting temporal modes through the ability of intentional "retentional-protentional" consciousness, as well as to clarify the possibility of interpreting its positions in the reconstruction of the concept of anthropic time. _Theoretical basis._ The theoretical framework of the research includes: 1) the interpretation of the phenomenological reflection of "time-consciousness" by E. Husserl in the context of solving the problem of phased-differentiation of this form of temporality; 2) the concept of (...) anthropic time (V. Khanzhy). _Originality._ For the first time in research literature, the possibilities of applying the ideas of Husserl to the reconstruction of the concept of anthropic time are considered through the interpretation of the phenomenological solution to the problem of temporality, proposed and specified in Husserl’s "time-consciousness" concept. _Conclusions._ The comprehension of the Husserlian model of intentionality of consciousness through the "grasping-from-now" and the constitution of phases of phenomenological time through the component of "exiting-from-now" showed that solving the problem of phased-differentiation of phenomenological time leads to the observation of the impossibility of isolating the modes of past, present, and future as self-sufficient and unconditional. More accurate indications, based on the constitutive intentionality of consciousness on the "grasping-from-now" phases of time (as conventional), are as follows: a) the abilities of retention and recollection are the foundation for the constitution of the past and its connections to the present; b) the perception establishes the basis for the phase of the present itself; c) the possibilities of protention and anticipation (as forms of imagination) constitute the future and its connections to the present. By the concept of retention, Husserl fixes a certain primary memory (the present "now" of a past interval), which enables retaining the past in the present. The category of recollection or secondary memory is used by the philosopher to refer to the self-sufficient reproduction of past experiences (without being joined to present perception). The fundamental difference between recollection and retention is that the former _re-_presents a temporal interval, grasping its content and reproducing it as it was in the past, while in the latter, the perceived duration is presented as a fragment of time that has just passed. According to the German philosopher, the "grasping" of the present phase is performed by perception. Through the constitutive intentionality of consciousness, perception synthesizes the results of primary-actual activity and retentional holding of duration. The second part of the article will present solutions to the following research tasks: 1) analysis of the possibilities of protention and anticipation in constituting the future and its connections with the present; 2) understanding the possibility of using interpreted forms of Husser’s ideas in reconstructing the concept of anthropic time. (shrink)

Background At the beginning of the coronavirus (Covid-19) pandemic, many non-Covid healthcare services were suspended. In April 2020, the Department of Health in England mandated that non-Covid services should resume, alongside the continuing pandemic response. This ‘resetting’ of healthcare services created a unique context in which it became critical to consider how ethical considerations did (and should) underpin decisions about integrating infection control measures into routine healthcare practices. We draw on data collected as part of the ‘NHS Reset Ethics’ project, (...) which explored the everyday ethical challenges of resetting England’s NHS maternity and paediatrics services during the pandemic. Methods Healthcare professionals and members of the public participated in interviews and focus group discussions. The qualitative methods are reported in detail elsewhere. The focus of this article is our use of Frith’s symbiotic empirical ethics methodology to work from our empirical findings towards the normative suggestion that clinical ethics should explicitly attend to the importance of relationships in clinical practice. This methodology uses a five-step approach to refine and develop ethical theory based on a naturalist account of ethics that sees practice and theory as symbiotically related. Results The Reset project data showed that changed working practices caused ethical challenges for healthcare professionals, and that infection prevention and control measures represented harmful barriers to the experience of receiving and offering care. For healthcare professionals, offering care as part of a relational interaction was an ethically important dimension of healthcare delivery. Conclusions Our findings suggest that foregrounding the importance of relationships across a hospital community will better promote the ethically important multi-directional expression of caring between healthcare professionals, patients, and their families. We offer two suggestions for making progress towards such a relational approach. First, that there is a change of emphasis in clinical ethics practice to explicitly acknowledge the importance of the relationships (including with their healthcare team) within which the patient is held. Second, that organisational decision-making should take into account the moral significance afforded to caring relationships by healthcare professionals, and the role such relationships can play in the negotiation of ethical challenges. (shrink)

_Filosofi og etikk har fått en stadig større plass i det offentlige rom i Norge. 2017 ble et år der filosofer sørget for overskrifter i en rekke norske medier. En av sakene som fikk størst oppmerksomhet, var debatten om sorteringssamfunnet og Aksel Braanen Sterris påstand om at personer med Downs syndrom ikke kan leve fullverdige liv. Utsagnet skapte en voldsom debatt og kraftige reaksjoner. Temaet for debatten er interessant i seg selv, men den reiser også spørsmål om hvordan slike debatter (...) endrer filosofiens anseelse og rolle i det offentlige ordskiftet i Norge. I denne artikkelen stiller vi derfor spørsmålet: På hvilken måte har debatten om sorteringssamfunnet i 2017 påvirket forholdet mellom filosofi og samfunn? Som perspektiv for analysen anvender vi tradisjonelle kvalitetskriterier innen filosofi, slik som konsistens, klare premisser og evnen til å klargjøre begreper, fremstille motargumenter og begrunne grenser. Vi finner at debatten om sorteringssamfunnet utvilsomt har gitt filosofien mer oppmerksomhet i det offentlige ordskiftet, og at filosofisk argumentasjon kan bidra til å løfte frem skjulte problemstillinger og sette ord på uuttalte intuisjoner, samt å stimulere til bedre argumentasjon. Dette bør hilses velkommen. Samtidig finner vi at filosofiens tilpasning til mediediskursen fører til at akademiske forbehold tradisjonelle kvalitetskrav og nyansering forsvinner. Dersom skjulte premisser, manglende konsistens, begrepslige og vurderingsmessige uklarheter, samt ignorering av empiriske premisser, motargumenter og viktige implikasjoner blir utbredt, vil resultatet kunne bli en fattigere offentlig debatt, et dårligere samfunn og et svekket omdømme for filosofien. Løsningen må være at vi som fagpersoner er villige til å gjøre klart og grundig rede for våre påstander, perspektiver, premisser, argumenter og konklusjoner, og at vi bør revidere eller trekke dem tilbake dersom vi ikke makter å gjøre dette. Ellers står vi i fare for å gjøre filosofien til en form for «villedningskunst» – en ny form for sofisme – og et lett bytte for platonsk fordømmelse._ __Nøkkelord:_ Filosofisk argumentasjon, offentlig debatt, sorteringssamfunnet, Downs syndrom, konsekvensetikk_ _English summary:_ The role of philosophy in public debate - A content analysis of the debate on the "sorting society" in Norway in 2017 Philosophy and ethics has recently gained increased attention in Norway. During 2017 philosophers hit the headlines in Norwegian media. One of the issues that gained most attention was the debate on “the differentiation/sorting society”. The debate was sparked by Aksel Braanen Sterri’s statement that persons with Downs’s syndrome cannot live full lives related to the issue of introducing non-invasive prenatal screening. While the debate is interesting in terms of its content, we will in this article focus on in what way the debate in 2017 has affected the relationship between philosophy and society, in particular the role and reputation of philosophy in public debates. To analyse the debate we apply traditional quality criteria within philosophy such as consistency, clear premises and the ability to clarify concepts, present counter-arguments and limitations. We find that the debate about “the sorting society” undoubtedly has given philosophy more public attention, and that philosophers can help raise covert or forgotten issues and explicate unspoken intuitions, as well as stimulate improved argumentation. This should be welcomed. At the same time, we find that philosophy's adaptation to the media discourse eliminates academic reservations and nuances. If hidden assumptions, lack of consistency, conceptual and evaluative uncertainties, as well as ignorance of empirical premises, counter-arguments, and important implications become widespread, the result could be a poorer public debate, an impoverished society, and a weakened reputation for philosophy. One solution is that we as professionals are willing to make our claims, perspectives, arguments, and conclusions clear and comprehensible, and that we are willing to revise or withdraw them if we are not able to do so. Otherwise, philosophy may become a form of "art of deception" - a new form of sophism - and an easy target for Platonic criticism. _Keywords:_ Philosophical argumentation, public debate, discrimination, Down's syndrome, consequentialism. (shrink)