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Book cover of Why Is Sex Fun by Jared Diamond — critical summary review on 12min

Why Is Sex Fun

Jared Diamond

5.0 (1 rating)
9 mins
Emotional IntelligenceSex & Relationships

“Why Is Sex Fun?” by Jared Diamond is a fascinating book offering insight into the evolution of human sexuality. Briefly, it is neither pornographic nor a how-to-do-it manual, but a humorous and wide-ranging exploration of why human sexuality is so bizarrely unusual by the standards of other animal species. It will catch your attention to discover all about sex.

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Who it is for

Best suited for those interested in evolutionary biology and human sexual evolution.

Key Insights

Sex = Social Bonding

Understand the social function of human sexuality.

Rethink Roles

Question traditional gender roles shaped by evolution.

Reflect on Intimacy

Use science to improve your emotional and physical bonds.

The Evolutionary Puzzle of Concealed Ovulation

One of the intriguing topics explored in 'Why Is Sex Fun?' is the phenomenon of concealed ovulation in humans. Unlike many other mammals, human females do not exhibit overt signs of fertility, which creates an evolutionary puzzle. Jared Diamond examines how this hidden fertility may have contributed to the development of monogamous relationships and pair bonding. By keeping ovulation concealed, human females could have encouraged longer-term partnerships and increased paternal investment in offspring, thereby enhancing the survival and success of human progeny.

The Role of Sexual Pleasure in Human Evolution

Diamond delves into the role of sexual pleasure as a driving force in human evolution. Unlike most other species that mate primarily for reproduction, humans engage in sexual activities for pleasure as well. This characteristic might have evolved to strengthen social bonds and ensure cooperative parenting. By making sex enjoyable, nature could have incentivized human partners to stay together, thereby improving the chances of offspring survival. This insight provides a compelling argument for why sex, beyond its reproductive function, is such a significant aspect of human life.

The Unique Challenge of Human Childbirth

Another fascinating insight from the book is the uniquely challenging nature of human childbirth. Humans have evolved to have larger brains, which necessitates a larger skull, yet the human pelvis remains relatively narrow to facilitate bipedal locomotion. This evolutionary compromise results in a difficult birthing process compared to other mammals. Diamond discusses how this challenge has influenced human social structures, promoting cooperative child-rearing and community support systems. The complex nature of human childbirth is thus not just a biological hurdle but also a factor that has shaped human society and family dynamics.

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About the Author

Jared Mason Diamond is an American polymath, a professor of geography at the University of California, Los Angeles and author of many popular science books, such as “The Third Chimpanzee,” “Guns, Germs, and Steel,” awarded a Pulitzer Prize, “Collapse,” “The World Until Yesterday,” and “Upheaval.”

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Lessons

  • Why your dog thinks that your sex life is bizarre and weird.
  • Why we owe the birth of monogamy to concealed ovulation.
  • Why, according to science, size matters (you know what we’re talking about).

Key Takeaways

  • Human sexuality is unique among species, with distinctive features such as concealed ovulation and menopause, which may have evolved to strengthen pair bonds and improve offspring survival.
  • The evolution of human sexual behavior is influenced by a combination of biological and social factors, highlighting the complex interplay between genetics and cultural development.
  • Understanding the peculiarities of human sexuality can provide insights into broader aspects of human nature and social structures, emphasizing the importance of evolution in shaping human behavior.

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