PifferPilfer

RSS: https://davidepiffer.com/feed
Exploring archaeogenetics, polygenic scores, intelligence, personality, fertility, and the little quirks of culture - from birth rates to coffee and tea. Click to read PifferPilfer, by Davide Piffer, a Substack publication with thousands of subscribers.

AI并非在思考上超越数学家,而是在记忆上超越他们

AI在数学上的优势主要来自更大的工作记忆,而非更强的推理能力。 语言模型能同时保持数百个中间步骤和约束条件,人类工作记忆只能容纳少数元素。数学推理高度依赖显式符号记录,这让AI的上下文窗口优势被最大化。工作记忆独立于IQ预测数学表现。AI更像放大版的冯·诺依曼——速度快容量大,但未必具备爱因斯坦式的概念重构能力。
评论点赞收藏15 小时前

南亚人的"雅利安"成分有多少?

我的上一篇帖子 询问,现代印度族群中究竟有多少与青铜时代草原牧民相关的祖先血统。他重点分析了Narasimhan及其同事发表的140个印度人群的群体分析结果,并基于此在当前AADR数据中重建了他们的三源西方式模型。 这不禁引出一个显而易见的区域问题:当同样的三源设计被应用于达卡孟加拉人组、十一个巴基斯坦群体(其中包括两个旁遮普族群)以及哈里亚纳的罗尔人时,会怎样?这些群体要么不在前一篇帖子所讨论的...
评论点赞收藏1 天前

耐心基因的地域分布:一项跨国遗传与行为关联研究

一项基于13.5万美国人的全基因组关联研究发现了11个与延迟折扣相关的基因位点,作者据此构建了6个变异的多基因评分,并在49个国家中检验其与行为、调查和文化层面耐心指标的关联,结果呈负相关。研究样本来自欧洲血统人群,评分在其他人群中的适用性存疑,作者也明确承认了这一局限。
评论点赞收藏3 天前

"尼安德特人肌肉基因"真的让现代人变成健身狂吗?

Science报道一篇Current Biology论文称尼安德特人生长激素受体基因让现代人肌肉更多,但实际数据远没这么夸张:每份变异仅增加约271克瘦体重,且研究从未测量肌肉外观或运动表现。媒体还将"细胞数量多39%"错误表述为"细胞体积大40%"。
评论点赞收藏5 天前

How Aryan Are Indians?

Populations connected to the spread of Indo-Aryan languages contributed ancestry to South Asia. The difficult questions are how much they contributed, when they arrived, and why the answer differs so ...
评论点赞收藏8 天前

Can Genes Help Countries Get Rich?

For most of modern economic history, explanations have focused on institutions, geography, culture, and historical contingency. Some countries developed more capable states, some were better positione...
评论点赞收藏10 天前

Does Every European Descend From Charlemagne?

This started with a Twitter thread from Lyman Stone about one of those claims that sounds as though it ought to be settled with cocktail-napkin arithmetic. You have two parents, four grandparents, eig...
评论点赞收藏20 天前

The genetic map of education and IQ in Spain

Spain’s regional disparities are economic as well as educational. In 2024, GDP per person was €41,016 in the Basque Country and €39,076 in Navarre, compared with €24,566 in Andalusia and €25,227 in Ex...
评论点赞收藏22 天前

Rome Was Ahead. Then the Barbarians Caught Up.

Rome built a flattering story about civilization and the peoples beyond its frontier. Ancient DNA lets us test one narrow part of it, and the answer changes once time enters the picture. The word “bar...
评论点赞收藏26 天前

Will Global Warming Push Civilization Backward?

The air-conditioning culture war is funny until your bedroom is still an oven at midnight. Ancient data raises a darker question: what happens when a society is built for a cooler climate? Every summe...
评论点赞收藏30 天前

Erling Haaland and the Giants of the Viking Age

Erling Haaland is 1.95 metres tall. He is Norwegian, built like a centre-back and fast enough to make the comparison feel unfair. If you wanted a living prop for the old image of the towering Viking, ...
评论点赞收藏34 天前

Elite Surnames, Average Phenotypes

This project began with my 2025 paper with Daniel Van Pelt and Emil Kirkegaard, “Regional Migration Patterns and Educational Outcomes in Italy: A Surname-Based Analysis of Historical Population Moveme...
评论点赞收藏38 天前

Did Cold Make Human Brains Bigger?

The idea that cold environments might favor larger brains did not come out of nowhere. Across animals, there is evidence that harsher and more variable environments can favor larger brains. In birds, ...
评论点赞收藏47 天前

Who are the Roma Gypsies? What Their DNA Tells Us

The Roma have historically been a difficult population to map genetically due to a lack of dense genomic data and a complex, highly disrupted migratory history. They are neither a standard European po...
评论点赞收藏49 天前

登录芦苇

登录后关注作者、收藏内容和参与讨论。