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ilovekolaches
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tl;dr Concealed ovulation is an evolutionary adaptation that occurs among female humans (and that is rather rare in nature) that allows them to cheat, have sex with Chad and fraud paternity. This adaptation was partly driven by women prostituting themselves for food and other goods/advantages. This straight up comes from a wikipedia article citing scientific studies
Concealed ovulation allows women to breed with genetically superior men (aka chads)
Concealed ovulation stops men from realizing they were cucked and from killing the bastard kids
This isn't much different from modern women who LARP as ovulating through the use of make up
Lastly I would like to point out that concealed ovulation goes hand in hand with other things such as: women having the brain structure of compulsive liars and the fact that 10% of children nowadays are the result of cuckoldry (frauded paternity).
It's absolutely undeniable that women have evolutionary adaptations geared towards cheating, which also shows how prevalent cheating was throughout history (and still is)
The last 2 hypothesis are less interesting but still worth reading imo, check the next spoiler if you're interested
Concealed ovulation or hidden estrus in a species is the lack of any perceptible change in an adult female (for instance, a change in appearance or scent) when she is fertile and near ovulation. Some examples of perceptible changes are swelling and redness of the genitalia in baboons and bonobos, and pheromone release in the feline family. In contrast, the females of humans and a few other species[1] that undergo hidden estrus have few external signs of fecundity, making it difficult for a mate to consciously deduce, by means of external signs only, whether or not a female is near ovulation.
Cuckoldry hypothesis
Cuckoldry hypothesis
Schroder in his review writes that Benshoof and Thornhill hypothesized that estrus became hidden after monogamous relationships became the norm in Homo erectus.[14] Concealed ovulation allowed the woman to mate secretly at times with a genetically superior man, and thus gain the benefit of his genes for her offspring, while still retaining the benefits of the pair bond with her usual sexual partner. Her usual sexual partner would have little reason to doubt her fidelity, because of the concealed ovulation, and would have high, albeit unfounded, paternity confidence in her offspring. His confidence would encourage him to invest his time and energy in assisting her to care for the child, even though it was not his own. Again, the idea of a man's investment being vital to the child's survival is a central fixture of a hypothesis regarding concealed ovulation, even as the evolutionary benefits accrue to the child, the woman, and her clandestine partner, and not to her regular sexual partner.
Reduced infanticide hypothesis
Reduced infanticide hypothesis
Concealed ovulation was partly born out of prostitutionThis hypothesis suggests the adaptive advantage for women who had hidden estrus would be a reduction in the possibility of infanticide by men, as they would be unable to reliably identify, and kill, their rivals' offspring.[14] This hypothesis is supported by recent studies of wild Hanuman langurs, documenting concealed ovulation, and frequent matings with males outside their fertile ovulatory period.[21] Heistermann et al. hypothesize that concealed ovulation is used by women to confuse paternity and thus reduce infanticide in primates. He explains that as ovulation is always concealed in women, men can only determine paternity (and thus decide on whether to kill the woman's child) probabilistically, based on his previous mating frequency with her, and so he would be unable to escape the possibility that the child might be his own, even if he were aware of promiscuous matings on the woman's part.
Sex and reward hypothesis
Sex and reward hypothesis
Women LARPed as ovulating to get what they wanted. They LARPed so much it altered their genetics through evolution and gave birth to concealed ovulationSchoroder[14] reviews a hypothesis by Symons and Hill, that after hunting, men exchanged meat for sex with women. Women who continuously mimicked estrus may have benefited from more meat than those that did not. If this occurred with enough frequency, then a definite period of estrus would have been lost, and with it sexual signaling specific to ovulation would have disappeared.
This isn't much different from modern women who LARP as ovulating through the use of make up
Lastly I would like to point out that concealed ovulation goes hand in hand with other things such as: women having the brain structure of compulsive liars and the fact that 10% of children nowadays are the result of cuckoldry (frauded paternity).
The last 2 hypothesis are less interesting but still worth reading imo, check the next spoiler if you're interested
Paternal investment hypothesis
The paternal investment hypothesis is strongly supported by many evolutionary biologists.[14] Several hypotheses regarding human evolution integrate the idea that women increasingly required supplemental paternal investment in their offspring. The shared reliance on this idea across several hypotheses concerning human evolution increases its significance in terms of this specific phenomenon.
This hypothesis suggests that women concealed ovulation to obtain men's aid in rearing offspring. Schoroder[14] summarizes this hypothesis outlined in Alexander and Noonan's 1979 paper: if women no longer signaled the time of ovulation, men would be unable to detect the exact period in which they were fecund. This led to a change in men's mating strategy: rather than mating with multiple women in the hope that some of them, at least, were fecund during that period, men instead chose to mate with a particular woman repeatedly throughout her menstrual cycle. A mating would be successful in resulting in conception when it occurred during ovulation, and thus, frequent matings, necessitated by the effects of concealed ovulation, would be most evolutionarily successful. A similar hypothesis was proposed by Lovejoy in 1981 that argued that concealed ovulation, reduced canines and bipedalism evolved from a reproductive strategy where males provisioned food resources to his paired female and dependent offspring.[17][18]
It's funny that they say that a woman having repeated sex with you makes you like her more and strengthens your bonds with her yet we're told to be happy to be treated as sexless drones by every woman we interact.Continuous female sexual receptivity suggests human sexuality is not solely defined by reproduction; a large part of it revolves around conjugal love and communication between partners. Copulations between partners while the woman is pregnant or in the infertile period of her menstrual cycle do not achieve conception, but do strengthen the bond between these partners. Therefore, the increased frequency of copulations due to concealed ovulation are thought to have played a role in fostering pair bonds in humans.
Schroder[14] presents the idea of a "gradual diminution of mid-cycle estrus and concomitant continuous sexual receptivity in human women" because it facilitated orderly social relationships throughout the menstrual cycle by eliminating the periodic intensification of male–male aggressiveness in competition for mates.[14] The extended estrous period of the bonobo (reproductive-age females are in heat for 75% of their menstrual cycle) has been said to have a similar effect to the lack of a "heat" in women. While concealed human ovulation may have evolved in this fashion, extending estrus until it was no longer a distinct period, as paralleled in the bonobo, this theory of why concealed ovulation evolved has frequently been rejected. Schroder outlines the two objections to this hypothesis: (1) natural selection would need to work at a level above the individual, which is difficult to prove; and (2) selection, because it acts on the individuals with the most reproductive success, would thus favor greater reproductive success over social integration at the expense of reproductive success.
- Sandy J. Andelman (June 1987). "Evolution of Concealed Ovulation in Vervet Monkeys (Cercopithecus aethiops)". The American Naturalist. 129 (6): 785–799. doi:10.1086/284675. S2CID 83522515.
- ^ S. C. Roberts; J. Havlicek; J. Flegr; M. Hruskova; A. C. Little; B. C. Jones; D. I. Perrett; M. Petrie (August 2004). "Female facial attractiveness increases during the fertile phase of the menstrual cycle". Proceedings of the Royal Society B. 271 (Suppl 5): S270 – S272. doi:10.1098/rsbl.2004.0174. PMC 1810066. PMID 15503991.
- ^ Geoffrey Miller; Joshua M. Tybur; Brent D. Jordan (June 2007). "Ovulatory cycle effects on tip earnings by lap dancers: economic evidence for human estrous?" (PDF). Evolution and Human Behavior. 28 (6): 375–381. CiteSeerX 10.1.1.154.8176. doi:10.1016/j.evolhumbehav.2007.06.002. Retrieved 2008-01-21.
- ^ Pipitone, R.; G . Gallup Jr (2008-05-18). "Women's voice attractiveness varies across the menstrual cycle". Evolution and Human Behavior. 29 (4): 268–274. doi:10.1016/j.evolhumbehav.2008.02.001.
- ^ Susan B. Bullivant; Sarah A. Sellergren; Kathleen Stern; et al. (February 2004). "Women's sexual experience during the menstrual cycle: identification of the sexual phase by noninvasive measurement of luteinizing hormone". Journal of Sex Research. 41 (1): 82–93. doi:10.1080/00224490409552216. PMID 15216427. S2CID 40401379. Archived from the original on 2007-07-28.
- ^ Ann Renninger, Lee; Wade, T. Joel; Grammer, Karl (2004). "Getting that female glance: Patterns and consequences of male nonverbal behavior in courtship contexts". Evolution and Human Behavior. 25 (6): 416–431. doi:10.1016/j.evolhumbehav.2004.08.006.
- ^ Thornhill, Randy; Gangestad, Steven W. (1999). "The Scent of Symmetry: A Human Sex Pheromone that Signals Fitness?". Evolution and Human Behavior. 20 (3): 175–201. doi:10.1016/s1090-5138(99)00005-7.
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- ^ Regan, P. C. (1996). "Rhythms of desire: the association between menstrual cycle phases and female sexual desire". Canadian Journal of Human Sexuality. 5: 145–156.
- ^ Motluk, Alison (2006-08-05). "The secret life of semen". New Scientist (2563). Retrieved 2008-06-28.
- ^ Chris Knight (1991). Blood relations: menstruation and the origins of culture. New Haven, Conn: Yale University Press. ISBN 978-0-300-04911-4.
- ^ Knight, Chris; Camilla Power; Ian Watts (1995). "The Human Symbolic Revolution: A Darwinian Account" (PDF). Cambridge Archaeological Journal. 5 (1): 75–114. doi:10.1017/S0959774300001190. S2CID 54701302. Archived from the original (PDF) on 2020-08-01. Retrieved 2006-12-13.
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- ^ Burt, Austin (June 1992). "'Concealed ovulation' and sexual signals in primates". Folia Primatologica. 58 (1): 1–6. doi:10.1159/000156600. PMID 1618432.
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- ^ Lovejoy, C. Owen (1981-01-23). "The Origin of Man". Science. 211 (4480): 341–350. Bibcode:1981Sci...211..341L. doi:10.1126/science.211.4480.341. ISSN 0036-8075. PMID 17748254.
- ^ Lovejoy, C. Owen (2009-10-02). "Reexamining Human Origins in Light of Ardipithecus ramidus" (PDF). Science. 326 (5949): 74–74e8. Bibcode:2009Sci...326...74L. doi:10.1126/science.1175834. ISSN 0036-8075. PMID 19810200. S2CID 42790876.
- ^ Benagiano, G.; Mori, M. (2009). "The origins of human sexuality: Procreation or recreation?". Reproductive Biomedicine Online. 18 (Suppl 1): 50–59. doi:10.1016/s1472-6483(10)60116-2. PMID 19281665.
- ^ Christopher Ryan Ph.D & Cacilda Jethá Ph.D (2012). Sex at Dawn. HarperCollins. ISBN 978-0-06-220794-4.
- ^ Hestermann, M.; Ziegler, T.; Van Schaik, C. P.; Launhardt, K.; Winkler, P.; Hodges, J. K. (2001). "Loss of oestrus, concealed ovulation and paternity confusion in free-ranging Hanuman langurs". Proceedings of the Royal Society B: Biological Sciences. 268 (1484): 2445–2451. doi:10.1098/rspb.2001.1833. PMC 1088898. PMID 11747562.
- ^ Koeslag, J. H. (1997). "Sex, the prisoner's dilemma game, and the evolutionary inevitability of cooperation". J. Theor. Biol. 189 (1): 53–61. Bibcode:1997JThBi.189...53K. doi:10.1006/jtbi.1997.0496. PMID 9398503.
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- ^ Jump up to:a b Pawłowski, B. (1999). "Loss of Oestrus and Concealed Ovulation in Human Evolution: The Case against the Sexual-Selection Hypothesis". Current Anthropology. 40 (3): 257–276. doi:10.1086/200017. S2CID 85884654
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