Sex at Dawn: How we mate, why we stray, and what it means for modern relationships

Finally got around to reading this, and frankly, it’s a total game-changer for how I view human history. Ryan and Jethá dismantle the 'standard model' of marriage with a witty, almost irreverent style that keeps you turning pages faster than a thriller. I loved the deep dive into our primate cousins, especially the bonobos, and how they contrast with the more aggressive chimps we’re usually compared to. It makes so much sense that the advent of agriculture changed the rules of the game for our species. While some of the jokes are a bit 'nudge-nudge,' the core argument feels incredibly well-researched and necessary. It’s the first science book that actually made me laugh out loud. If you’ve ever felt like modern expectations for relationships are a mismatch for our biology, this is essential reading.

Ever wonder why staying monogamous feels like a constant uphill battle for so many people? Ryan and Jethá argue that it’s because we aren’t built for it, and their evidence—ranging from the shape of the human penis to the behavior of modern foraging tribes—is compelling. I was struck by the idea that our ancestors raised children communally rather than in isolated nuclear families. It explains so much about modern loneliness. The book is playful and informal, making complex biological concepts easy to grasp for a general audience. Not gonna lie, some of the rhetoric is a bit hyperbolic, but the underlying message is incredibly liberating. It encourages us to be kinder to ourselves and our partners by acknowledging our true nature. A must-read for anyone in a relationship.

Wow, what a wild ride through the history of human sexuality. I picked this up because I wanted to understand why we mate the way we do, and I got so much more. The authors have a gift for making anthropology feel relevant and exciting. They tackle the 'Standard Model' of human evolution with sharp wit and a lot of courage. It’s refreshing to see someone challenge the idea that women are naturally less sexual than men, a myth that has done so much damage over the years. The book is well-researched but remains incredibly readable, avoiding the dry jargon that usually bogs down science books. It’s provocative, funny, and deeply human. Whether you agree with their conclusions or not, you’ll never look at a wedding the same way again.

It’s rare to find an anthropology book that feels this urgent and alive. Ryan and Jethá have written something that is equal parts science, history, and social commentary. I loved the way they compared human biology—like our relatively large testicles and the female capacity for multiple orgasms—to other primates to show our promiscuous heritage. The writing is incredibly engaging and humorous, making it accessible even if you don't have a background in science. It’s a thought-provoking deep dive into the 'why' behind our relationships. My only minor gripe is that they sometimes ignore cultural factors in favor of purely biological ones, but the overall argument is so powerful it didn't bother me much. This book will stay with you for a long time.

As an anthropology nerd, I found the data here absolutely fascinating, even if the authors' tone gets a bit smug at times. They do a brilliant job explaining how we've 'Flintstonized' our ancestors, projecting our own Victorian morals onto prehistoric foragers who likely lived much more fluid lives. The section on female copulatory vocalization was a real eye-opener! To be fair, they do cherry-pick certain studies to fit their narrative of prehistoric promiscuity, and I can see why traditional evolutionary psychologists get riled up. However, the writing is so accessible and engaging that it’s hard to put down. It challenges the 'Darwin says your mother’s a whore' barter system theory in a way that feels long overdue. It’s not a perfect scientific treatise, but it’s a brilliant catalyst for conversation.

The chapter on 'Flintstonization' alone is worth the price of admission. It’s so true that we assume Caveman Fred and Wilma lived just like us, only with stone tools. Ryan and Jethá do a great job of stripping away those layers of cultural bias to show a much more complex, sexually communal past. Their writing style is punchy and accessible, which is rare for this kind of subject matter. I do think they oversimplify the 'Standard Model' to make it easier to knock down, but their points about the shift from foraging to farming are hard to ignore. Property rights changed everything, including how we 'own' our partners. It’s a thought-provoking look at why we stray and what it means for our modern marriages. Definitely recommended for the curious.

Picked this up after hearing Dan Savage mention it on his podcast multiple times. It’s a fascinating exploration of how our sexual behaviors were shaped long before we started living in cities. The connection they draw between the rise of agriculture and the 'locking up' of female sexuality is particularly striking. While I think they might be a bit too optimistic about the 'peaceful' nature of our ancestors, their critique of modern monogamy is spot on. The prose is brisk and full of personality, though some readers might find the informal tone a bit dismissive of opposing views. Still, it’s a vital piece of the puzzle if you’re trying to understand the disconnect between our biological urges and our social structures. It definitely brings clarity to a very messy subject.

To be fair, the authors make some really interesting points about human anatomy and our similarities to bonobos, but the social proselytizing got on my nerves. About halfway through, it stops being a book about evolution and starts being a manifesto for polyamory. I agree that the traditional narrative of 'man provides, woman stays faithful' is flawed, but Ryan and Jethá swing too far in the other direction. They present prehistoric life as an endless orgy without any of the jealousy or conflict that we know are human universals. Personally, I found the 'naughty bits' humor a bit cringey after a while. It’s an engaging read, and I don’t regret the time spent, but take the scientific 'facts' with a very large grain of salt.

Look, I enjoyed the prose and the witty banter, but I left this book feeling a bit skeptical of the actual science. The authors are great at pointing out the flaws in traditional theories, but their own 'ancient egalitarianism' theory feels a bit like wishful thinking. They use phrases like 'Darwin says your mother's a whore' to mock the opposition, which is funny, but doesn't actually prove their point. It felt like a popular science book for people who want to be told that their wandering eyes are just evolution at work. That said, it is very well-written and kept me interested throughout. It’s a fun, fast-paced read that raises some great questions, even if the answers it provides are a bit too convenient. Worth a look for the perspective.

This book attempts to sell a very specific lifestyle under the guise of hard science, and I’m just not buying it. While the authors are undeniably talented writers with a gift for humor, their dismissal of the entire field of evolutionary psychology as a 'clipboard-carrying crowd' feels childish and defensive. I felt cheated by the lack of hard evidence for their claims of a peaceful, pansexual utopia before agriculture. After reading this, I picked up Sex at Dusk by Lynn Saxon, which systematically dismantles almost every point Ryan and Jethá make. Truth is, they ignore huge swaths of data regarding male parental investment just to promote polyamory as the 'natural' state. It's a fun read if you want to justify cheating, but as a serious academic work, it falls flat.