A review of the synaptic plasticity and memory hypothesis arguing that it is insufficient to explain memory, and proposing a broader cellular processes and memory hypothesis that includes molecular and intracellular mechanisms. Longer summary

The post reviews the synaptic plasticity and memory (SPM) hypothesis, which claims that learning and memory are stored in changes to synaptic weights between neurons. Through several compelling examples, from cannibalism rituals to heart transplant stories and single-cell learning, the author argues that while the SPM hypothesis has been productive, it is incomplete and partially wrong. The post presents evidence that memory can be stored through non-synaptic mechanisms, and proposes an alternative called the cellular processes and memory (CPM) hypothesis, which suggests memory storage involves multiple molecular and intracellular processes beyond just synaptic weights. Shorter summary

This review explores how schools are primarily designed to maximize motivation rather than learning, explaining why age-graded classrooms and seemingly inefficient group learning have persisted despite numerous attempts at reform. Longer summary

The post examines why schools have maintained their traditional structure of age-graded classrooms where all students learn the same content, despite its apparent inefficiencies. The author argues that schools are designed primarily to maximize motivation rather than learning, using conformity as a key tool. Through analyzing various attempts at personalized learning and their consistent failures to scale beyond about 5% of students, the post explains how students fall into three categories: no-structure learners, low-structure learners, and high-structure learners. The author concludes that while the current system is far from perfect, it has proven more effective at scale than any alternatives, predicting that despite continued attempts at reform, the basic structure of schooling will remain unchanged. Shorter summary

Scott analyzes research on whether longer prison sentences reduce crime, examining studies on deterrence, incapacitation, and aftereffects, to conclude that while prison does decrease crime through incapacitation, it's less cost-effective than other methods like policing. Longer summary

This post examines the relationship between prison sentences and crime reduction through three mechanisms: deterrence (scaring potential criminals), incapacitation (preventing prisoners from committing crimes), and aftereffects (post-release behavior changes). Through analysis of multiple studies and reviews, Scott finds that deterrence effects are minimal, incapacitation has strong positive effects (preventing about 7 crimes per prisoner-year), and aftereffects range from slightly beneficial to harmful depending on circumstances. He concludes that while prison does reduce crime, with a 10% increase in incarceration reducing crime by about 3%, it's less cost-effective than alternatives like increased policing. The post ends by examining practical challenges in the justice system that prevent effective handling of repeat offenders. Shorter summary

Scott Alexander discusses the political battle over California's AI safety bill SB 1047, its veto by Governor Newsom, and the implications for future AI regulation efforts. Longer summary

This post recounts the story behind SB 1047, a California bill aimed at regulating AI safety that was passed by the legislature but vetoed by Governor Newsom. Scott discusses the bill's supporters and opponents, the political maneuvering involved, and the aftermath of the veto. He analyzes the reasons for the veto, suggesting it was influenced by Silicon Valley donors and interests. The post also explores potential future strategies for AI regulation advocates, including possible alliances with left-wing groups. Scott concludes with reasons for optimism despite the setback, noting growing public support for AI regulation. Shorter summary

Scott Alexander responds to comments on his post about new telemedicine regulations, addressing various concerns and criticisms raised by readers. Longer summary

Scott Alexander summarizes and responds to various comments on his original post about new telemedicine regulations. He addresses concerns about drug addiction, debates the effectiveness of telemedicine compared to in-person care, discusses the issue of 'pill mills', clarifies his analogy about blind people accessing Braille, responds to criticism of his characterization of Christian doctors, examines which part of the government is responsible for the regulations, and looks at how other countries handle telemedicine prescriptions. Shorter summary

Scott Alexander addresses reactions to his claim that media rarely lies, exploring different interpretations of 'lying' and examining specific cases of alleged media deception. Longer summary

Scott Alexander discusses the reactions to his previous posts about media rarely lying, addressing various criticisms and examples provided by commenters. He explores different interpretations of 'lying', examines specific cases of alleged media deception, and reiterates his position that while media often misleads or reasons poorly, it rarely engages in outright fabrication of facts. Scott also reflects on the nature of conspiracy theories and the importance of understanding how people can genuinely believe false things. Shorter summary

Stuart Russell's 'Human Compatible' presents AI safety concerns and potential solutions in an accessible way, though the reviewer has reservations about its treatment of current AI issues. Longer summary

Stuart Russell's book 'Human Compatible' discusses the potential risks of superintelligent AI and proposes solutions. The book is significant as it's written by a distinguished AI expert, making the topic more mainstream. Russell argues against common objections to AI risk, presents his research on Cooperative Inverse Reinforcement Learning as a potential solution, and discusses current AI misuses. The reviewer praises Russell's ability to make complex ideas accessible but expresses concern about the book's treatment of current AI issues, worried it might undermine credibility for future AI risk discussions. Shorter summary

This collaboration examines the empirical evidence and significance of spiritual experiences, arguing they deserve serious consideration as an important aspect of human life. Longer summary

This adversarial collaboration explores the significance of spiritual experiences as empirical evidence for a transcendent reality. The authors review psychological research, epistemological arguments, near-death experiences, and entheogen use, discussing how to interpret such experiences and their impact on individuals. While not reaching a definitive conclusion on the metaphysical reality of spiritual experiences, they argue these experiences deserve serious consideration as an important aspect of human life worthy of further exploration. Shorter summary

This post examines the pros and cons of using gene editing technologies in humans, discussing scientific, medical, and ethical considerations. Longer summary

This post discusses the potential uses, risks, and ethical implications of gene editing technologies in humans. It covers the science behind CRISPR, its safety and efficiency, the relationship between genetics and disease, and potential applications in treating conditions like cancer and HIV. The authors explore complex questions around genetic enhancement and 'designer babies', highlighting both the promise and perils of this technology. They conclude that while gene editing holds great potential, especially for certain genetic diseases, its use must be carefully regulated and ethically considered. Shorter summary

Scott Alexander examines the history of increasing competitiveness in college admissions, analyzing causes and questioning whether the focus on elite college admission is justified. Longer summary

Scott Alexander explores the history of college admissions and the increasing competitiveness in recent years. He traces the evolution from a time when top colleges admitted almost anyone qualified to the current highly competitive landscape. The post examines various factors contributing to this change, including increased applications per student, changing demographics, and shifts in evaluation criteria. Scott also investigates whether the intense focus on college admissions is justified, given research suggesting that attending a selective college may not significantly impact most students' long-term outcomes. Shorter summary

Scott Alexander analyzes a paper suggesting scientific progress is slowing relative to researcher numbers, arguing this trend is expected and possibly beneficial. Longer summary

Scott Alexander discusses a paper by Bloom, Jones, Reenen & Webb (2018) that suggests scientific progress is slowing down relative to the number of researchers. The paper shows that while progress in various fields (e.g., transistor density, crop yields) remains constant, the number of researchers has increased exponentially. Scott argues that this constant progress despite exponential increase in inputs should be our null hypothesis, as expecting proportional increases would lead to unrealistic outcomes. He suggests that the 'low-hanging fruit' explanation is most plausible, where early discoveries were easier to make. Scott also warns against trying to 'fix' this trend, as it could lead to dangerous consequences if scientific progress accelerated too quickly. Shorter summary

Scott Alexander examines a paper suggesting scientific progress is slowing relative to researcher numbers, arguing this trend is expected and potentially beneficial. Longer summary

Scott Alexander discusses a paper by Bloom, Jones, Reenen & Webb (2018) that suggests scientific progress is slowing down relative to the number of researchers. The paper shows that while progress in various fields (like transistor density, crop yields, and economic productivity) has remained constant or grown linearly, the number of researchers has increased exponentially. Scott argues that this constant progress despite exponential input growth should be our null hypothesis, as the alternative would lead to unrealistic scenarios like immortality or 50% annual GDP growth. He suggests that the 'low-hanging fruit' explanation is most plausible, where easier discoveries are made first, making further progress increasingly difficult. Scott also cautions against trying to 'fix' this trend, noting potential dangers of accelerated scientific progress. Shorter summary

The post examines the compatibility of Islam and liberal democracy by analyzing six Muslim-majority countries, finding a wide spectrum of outcomes and concluding that Islam often acts as an obstacle to liberal democracy. Longer summary

This post examines the compatibility of Islam and liberal democracy by analyzing six Muslim-majority countries: United Arab Emirates, Tunisia, Indonesia, Kazakhstan, Iran, and Lebanon. The authors review each country's history, constitution, democratic institutions, and human rights record to assess the extent to which liberal democracy has taken hold. They find a wide spectrum, from Tunisia's robust democracy to Iran's theocratic regime, with the other countries falling in between. The authors conclude that while it's possible for Muslim countries to adopt liberal democracy, Islam often acts as an obstacle, and most Muslim countries have only taken small steps in that direction so far. Shorter summary

Scott Alexander presents a diverse collection of links and brief commentary on topics ranging from historical anecdotes to recent scientific studies and political developments. Longer summary

This post is a collection of various links and brief commentary on diverse topics. It covers historical anecdotes, scientific studies, political developments, and cultural phenomena. The post touches on subjects like vegetarian activism, Supreme Court changes, AI alignment, and Silicon Valley culture. Scott Alexander provides concise summaries and occasional personal opinions on these wide-ranging topics, often with a touch of humor or irony. Shorter summary

A collection of interesting links covering various topics from Judaism and science to media bias and hate crime hoaxes, with Scott's commentary on each story. Longer summary

This is one of Scott's regular link posts, where he shares interesting articles and studies he's found with brief commentary on each. The links cover a wide range of topics including religious practices, scientific research, healthcare policy, media bias, and social issues. Among the notable items are studies on early school starting age and crime rates, fake hate crime reports after Trump's election, and research on gender differences in medical care. The tone is analytical and sometimes skeptical, with Scott often providing additional context or pointing out methodological issues. Shorter summary

Scott Alexander critiques arguments against school vouchers, discussing potential efficiency gains and drawbacks of privatization in education, while proposing experimental approaches to school reform. Longer summary

Scott Alexander critiques Nathan Robinson's arguments against school vouchers, discussing the potential efficiency gains and drawbacks of privatization in education. He compares education to other sectors like healthcare and grocery stores, analyzes the rising costs in public education, and proposes experimental approaches to school reform, including a system of small, home-based schools. Shorter summary

Scott argues against Vox's proposal for drug price controls, citing studies that such policies would significantly reduce pharmaceutical innovation and potentially cost millions of life-years long-term. Longer summary

Scott Alexander responds to Sarah Kliff's Vox article about drug pricing, arguing that her proposal for price controls on brand-name drugs would significantly decrease pharmaceutical innovation. He cites multiple economic studies suggesting price controls reduce R&D and new drug development. Scott argues that while price controls might lower costs in the short-term, they could cost millions of life-years long-term by reducing new drug creation. He suggests focusing on increasing generic drug competition and reducing unnecessary prescriptions of expensive brand-name drugs with cheap generic alternatives as better solutions to high drug prices. Shorter summary

A collection of interesting links covering various topics from scientific studies, social issues, and current events, including problems with brain imaging studies, AI safety developments, and surprising research findings. Longer summary

This is one of Scott's regular link posts where he shares and briefly comments on interesting articles and studies he's found. The post covers diverse topics including medical research critique (particularly brain imaging and psychiatric studies), current events (like the Chinese government's actions against Buddhist monks), and technological developments in AI safety. Scott adds his characteristic analytical commentary to many of the links, pointing out surprising implications or potential flaws in the studies. The format is casual but informative, with Scott often expressing personal opinions or humorous observations about the material he's sharing. Shorter summary

Scott Alexander reviews research on teacher effectiveness, examining Value-Added Modeling (VAM) and its criticisms, while expressing uncertainty about claimed long-term impacts on adult earnings. Longer summary

Scott Alexander reviews research on teacher effectiveness, focusing on Value-Added Modeling (VAM) and its criticisms. He explores studies showing teachers account for about 10% of variance in student test scores, with effects decaying quickly over time. However, some controversial studies claim long-term impacts on adult earnings. Scott examines methodological issues, potential biases, and alternative explanations, ultimately expressing uncertainty about the validity of these long-term effects. He suggests non-cognitive factors like behavior might explain persistent impacts if they exist, but remains skeptical given the contrast with research showing minimal parental influence on outcomes. Shorter summary

Scott Alexander argues that OpenAI's open-source strategy for AI development could be dangerous, potentially risking human extinction if AI progresses rapidly. Longer summary

Scott Alexander critiques OpenAI's strategy of making AI research open-source, arguing it could be dangerous if AI develops rapidly. He compares it to giving nuclear weapon plans to everyone, potentially leading to catastrophe. The post analyzes the risks and benefits of open AI, discusses the potential for a hard takeoff in AI development, and examines the AI control problem. Scott expresses concern that competition in AI development may be forcing desperate strategies, potentially risking human extinction. Shorter summary

A collection of interesting links spanning topics from CRISPR technology to economic studies, with Scott's commentary on each item. Longer summary

This is a links post collecting various interesting articles and studies across multiple domains. Scott shares updates on CRISPR technology, corporate governance issues, demographic claims about Bernie Sanders supporters, studies about gender bias, and various economic research. The post includes both lighter observations (like different views of the White House) and serious academic papers about genetics, intelligence, and economic development. The format is typical of SSC links posts, with brief commentary on each link and occasional humorous asides. Shorter summary

Scott Alexander refutes a blog post criticizing rationalism, arguing it misunderstands the movement and its core values of empiricism, scholarship, and humility. Longer summary

Scott Alexander critiques a blog post titled 'Why I Am Not A Rationalist' on Almost Diamonds, arguing that it fundamentally misunderstands both classical rationalism (Descartes) and modern rationalism (Yudkowsky). He points out that the blog post accuses rationalists of lacking empiricism, scholarship, and humility, when these are in fact core values of the rationalist movement. Scott provides numerous examples to demonstrate the rationalist community's commitment to these principles. He concludes by explaining why rationality skills are necessary in addition to empirical knowledge, especially when dealing with limited or conflicting information. Shorter summary

Scott Alexander examines political tribalism in America, arguing that people often claim tolerance while harboring strong prejudices against their outgroups. Longer summary

Scott Alexander explores the concept of outgroups and ingroups, arguing that people often claim to be tolerant of all groups except their perceived outgroup. He suggests that in modern American society, political tribes (Red and Blue) have become more significant than traditional demographic divisions. The essay analyzes how these tribes interact, criticize each other, and sometimes engage in self-criticism that may actually be veiled attacks on the opposing tribe. Alexander ultimately reflects on his own biases and the difficulty of genuine self-criticism and tolerance. Shorter summary