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Razib Khan's Unsupervised Learning

Podcast Razib Khan's Unsupervised Learning
Razib Khan
Razib Khan engages a diverse array of thinkers on all topics under the sun. Genetics, history, and politics. See: http://razib.substack.com/

Available Episodes

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  • Tade Souaiaia: the edge of statistical genetics, race and sports
      On this episode of Unsupervised Learning Razib talks to Tade Souaiaia, a statistical geneticist at SUNY Downstate about his new preprint, Striking Departures from Polygenic Architecture in the Tails of Complex Traits. Souaiaia trained as a computational biologist at USC, but also has a background as a division I track and field athlete. Razib and Souaiaia discuss what “genetic architecture” means, and consider what we're finding when we look at extreme trait values in characteristics along a normal distribution. Though traits like height or risk for type II diabetes can be thought of as represented by an idealized Gaussian distribution, real molecular and cellular processes still underlie their phenotypic expression. Souaiaia talks about how genomics has resulted in an influx of data and allowed statistical geneticists with a theoretical bent to actually test some of the models that underpin our understanding of traits and examine how models like mutation-selection balance might differ from what we’ve long expected. After wading through the depths of genetic abstraction and how it intersects with the new age of big data, Razib and Souaiaia talk about race and sports, and whether there might be differences between groups in athletic ability. Souaiaia argues that the underlying historical track record is too variable to draw firm conclusions, while Razib argues that there are theoretical reasons that one should expect differences between groups at the tails and even around the memes.
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  • Shadi Hamid: pessimism on Palestine but hope in America
    On this episode of Unsupervised Learning Razib talks with Washington Post columnist Shadi Hamid. A native Pennsylvanian of Egyptian ethnic background, and Islamic faith, Hamid completed his Ph.D. in politics at Oxford University. He is an assistant professor at Fuller Seminary, co-host of the Wisdom of Crowds podcast and website, and now the author of his own Substack and a recent book, The Problem of Democracy: America, the Middle East, and the Rise and Fall of an Idea. Hamid is also the author of Temptations of Power: Islamists & Illiberal Democracy in a New Middle East and Rethinking Political Islam. Hamid and Razib discuss the tail end of the war in Gaza, from the explosion of 10/7 and the wave of atrocities against Israelis surrounding the Palestinian enclave, to the brutal counter-attack that has resulted in tens of thousands of Gazan civilian deaths. While Hamid points to the deep structural issues that divide the two parties, and make final resolution of the conflict difficult, Razib highlights the many pitfalls of third parties becoming involved in such a highly polarized and fraught topic. They also discuss the growing identification of the global Left, including American progressives, with the Palestinian cause, the difficulties of grappling with and containing anti-Semitism within the movement. Though Israel’s counter-offensive is finally reaching a denouement, Hamid strikes a fundamentally pessimistic note about long-term possibilities. Then they pivot to domestic politics, and recent cultural trends that culminated in a Trump victory in the 2024 USelection, and the alienation of many nonwhites in the Democratic coalition from the hegemony of woke cultural elites. Hamid reiterates his long-standing critiques of racial identitarianism on the Left, and the irony that the progressive awareness of racial minorities only tends to extend to them when these minorities cosign woke nostrums. In contrast to the seemingly interminable nature of the conflict in the Middle East, Razib and Hamid both see hope for a path forward with reduced racial polarization and a reorientation of politics around substantive material interests rather than symbolic racial or ethnic categories.
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  • Conn Carroll: Sex and the Citizen
      On this episode of Unsupervised Learning Razib talks to Conn Carroll, the author of Sex and the Citizen: How the Assault on Marriage Is Destroying Democracy. Caroll is currently an editor for the Washington Examiner, but previously he was the communications director for Senator Mike Lee of Utah, an assistant director at the Heritage Foundation, White House correspondent for Townhall.com and a reporter at National Journal. Carroll wrote Sex and the Citizen in response to what he felt was misleading and biased reporting in the mainstream media on the origins and implications of marriage and monogamy. Razib asks Carroll how he refutes the ideas presented in Christopher Ryan and Cacilda Jethá’s Sex at Dawn, which argues that prehistoric humans were non-monogamous. Carroll outlines the current mainstream thinking in evolutionary anthropology and primatology, and all the biological reasons that indicate that Homo sapiens is far more monogamous than our common chimpanzee and gorilla cousins, most clearly in our reduced sexual dimorphism. But while our hunter-gatherer past was defined by monogamy, Sex and the Citizen argues that the rise of agriculture resulted in the explosion of polygamy, as high status males in societies defined by incredible inequality began to monopolize access to women, culminating in the explosion of Y chromosomal “star phylogenies,” where supermale lineages exploded all over Eurasian 4,000 years ago. Carroll then explains that the Romans and Greeks took steps toward enforcing monogamy as a legal institution, and Christianity introduced the idea of sexual fidelity upon men. After Christianity popularized egalitarian monogamous marriage, Sex and the Citizen follows in Joe Henrich’s wake in The WEIRDest People in the World: How the West Became Psychologically Peculiar and Particularly Prosperous. Carroll discusses the Catholic Church’s strict policies on incest and adoption, which destroyed the power of elite related clans in the West, and hastened the emergence of the Western European marriage norm of independent and separate nuclear families, rather than extended families as the primary unit of kinship in society.   In the second half of Sex and the Citizen Carroll addresses the social history and policy changes in relation to marriage in the US. While Western European societies took a significant step away from familialism, Carroll explains that American marriage was even more individualistic and radical, as nuclear families spread out to the frontier, away from their extended kin networks. He also contextualizes the rise of the 1950’s nuclear family, which some scholars have argued was an aberration in American history. Carroll argues that actually it was an extension of earlier American norms, but the rise of the wage-based capitalist economy allowed for couples to set up separate households earlier in their lives. Carroll concludes the discussion outlining the 1970’s policy changes in welfare provision that discouraged marriage, noting the decline of the institution across American society over the last 60 years, and how government policy might reverse it.
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  • Dan Hess: the fertility collapse
      On this episode of Unsupervised Learning Razib has a wide-ranging conversation with Dan Hess, the man behind the More Births account on social media. An engineer with a large family in the DC area, Hess’ essays on topics like Israelis’ high birth rate have gained the attention of X, with an account that has come from a few hundred followers to more than 30,000 in 2 years. Razib and Hess first review the birth-rate collapse seen worldwide in the past two decades. They discuss the relatively abrupt cultural pivot that has occurred since the turn of the century, with the end of the “overpopulation” narrative typified by Paul Erhlich’s Population Bomb, the rise of the “birth dearth” and the natalist movement. They talk about the most extreme cases of low total fertility rates (TFR) in Europe and East Asia, but also the decline in societies like the US, Latin America and the Middle East. Hess addresses both possible causes and possible solutions. They also discuss historical and demographic factors that impact fertility; for example, which religions have been the most pro-natalist? Hess also puts a particular focus on South Korea, the world’s most extreme case of a sharp decrease, with a TFR of about 0.70 children per woman (vs. 2.1 replacement), as well as exceptions to the rule like Haredi Jews and the Amish. Finally, Razib and Hess tackle why we should care about slower population growth in this century, from dependency ratios to the impact on cultural vitality.
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  • Brian Chau: welcoming the AI-age and DeepSeek
      On this episode of Unsupervised Learning Razib talks to Brian Chau, who writes at the From the New World Substack. A graduate of the University of Waterloo and former software engineer with a background in pure mathematics, today Chau is executive director of the Alliance for the Future, a think tank that believes artificial intelligence will transform our world for the better. Chau addresses the great “doomer vs. anti-doomer” debate, and argues for an anti-catastrosophist position. He also makes the case that increasing scaling has started to hit diminishing returns, and the expectation that artificial intelligence will continue to gain power purely through throwing more resources at the same problems. Then, they discuss the revolutionary impact of the recent advances DeepSeek has made in China (an issue he addresses on his Substack). Chau breaks down the technological nuts and bolts, as well as geopolitical and economic consequences.
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About Razib Khan's Unsupervised Learning

Razib Khan engages a diverse array of thinkers on all topics under the sun. Genetics, history, and politics. See: http://razib.substack.com/
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