The Academic Great Gatsby Curve: How Much of Academic Success Is Inherited?

2024-12-21
The Academic Great Gatsby Curve: How Much of Academic Success Is Inherited?

A new study reveals that academic success mirrors the inheritance of wealth and social status. Analyzing data from over 245,000 mentor-mentee pairs, researchers found that the more unequal the citation distribution within a discipline, the more likely a mentee's citation ranking reflects their mentor's. This suggests academic success is shaped by structural forces similar to those governing social mobility, where the advantage of a top mentor creates a self-reinforcing cycle of success. While acknowledging the benefits of top mentorship, the study cautions against relying solely on citation metrics, advocating for greater academic equity and equal opportunity.

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Postgres Reads Causing Writes: MVCC, Page Pruning, and Hint Bits

2024-12-25

This article delves into the seemingly paradoxical behavior in PostgreSQL where simple SELECT queries can trigger data writes. Starting with the Multi-Version Concurrency Control (MVCC) mechanism, it explains concepts like row versions, pages, and tuples. Through code examples, it analyzes how hint bit updates and page pruning cause read operations to modify pages, ultimately leading to disk writes. The article also discusses the HOT update optimization strategy and uses page inspection tools to illustrate how data is stored and updated within pages.

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Development Database Performance

The Future of Chocolate: Beyond Cocoa?

2024-12-24
The Future of Chocolate: Beyond Cocoa?

Soaring cocoa prices, coupled with environmental concerns and labor issues, are creating a crisis in the Swiss chocolate industry. New EU regulations banning deforestation-linked products add further pressure. Startups are responding by developing cocoa-free alternatives, using ingredients like fava beans, oats, sunflower seeds, and carob. Innovative approaches include utilizing more of the cocoa fruit and even converting greenhouse gases into cocoa butter substitutes. While these technologies are nascent, the future of chocolate promises deliciousness, albeit with potentially altered sourcing.

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China's Paradox: Coal Fuels the Green Revolution

2025-07-12
China's Paradox: Coal Fuels the Green Revolution

China's energy profile is a paradox: it consumes over half the world's coal while simultaneously building the world's largest solar and EV industries. Cheap coal power underpins low electricity costs for Chinese factories, while oil and gas revenues fund clean energy projects. By spring 2025, wind and solar provided over a quarter of China's power, suggesting domestic coal use may have peaked. However, coal remains strategically important, with increased exports offsetting slowing domestic demand. Essentially, China's green ascent is fueled by its coal economy. Much of the world's solar equipment is manufactured using fossil fuels, with coal generating over 60% of the electricity used. China's massive investment in solar factories, while driving down panel costs, relies heavily on coal-fired power. Furthermore, China's coal and heavy industries support its clean-tech supply chain, with even coal exports indirectly feeding Asia's green economy. Yet, Chinese overseas energy investment still heavily favors coal and oil. In short, Chinese state capital remains intertwined with both legacy and clean energy. China's EV juggernaut is sweeping across Asia, but faces intense price competition. In South Asia, Chinese energy infrastructure investment presents a mixed picture: financing coal plants in Bangladesh while simultaneously flooding the market with solar panels. This creates strategic tension, with China's solar panels outcompeting its power plants in countries like Pakistan. While Asia benefits from cheaper clean technology and job creation, heavy reliance on China creates vulnerabilities. Asian policymakers need to diversify energy sources and build local capacity to avoid replacing one energy dependence with another.

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Tech Coal

yes-rs: A Blazingly Fast, Memory-Safe Rust Rewrite of Unix 'yes'

2025-05-27
yes-rs: A Blazingly Fast, Memory-Safe Rust Rewrite of Unix 'yes'

Tired of the memory-unsafe and overflow-prone C version of the Unix 'yes' command? Meet yes-rs, a Rust rewrite that's not only blazingly fast but also guarantees memory safety with zero unsafe code blocks. Clocking in at a hefty 1302 lines of Rust (compared to the original C's ~50), yes-rs boasts modern error handling, zero-cost abstractions, and the ability to output custom strings. Built with Cargo, it's easy to install and use. For those demanding ultimate performance and safety, yes-rs is the answer!

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Development

The Curious Case of the Public Domain Jaws Poster

2025-06-20
The Curious Case of the Public Domain Jaws Poster

Celebrating the 50th anniversary of Jaws, a surprising fact emerges: due to a quirk of copyright law, the iconic shark painting from the movie poster is in the public domain. Initially rejected for resembling a "vagina with teeth," the artwork underwent revisions before becoming a classic. However, the lack of a copyright notice upon its 1975 publication inadvertently forfeited the image to the public domain, leaving artist Roger Kastel to unsuccessfully fight for copyright recognition years later and missing out on millions in royalties. The original painting's whereabouts remain a mystery, adding another layer to this fascinating tale of copyright and public domain, sparking discussion on artist rights and the commons.

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Design Jaws

Puck v0.18 Released: New Drag-and-Drop Engine with CSS Grid & Flexbox Support

2025-01-25
Puck v0.18 Released: New Drag-and-Drop Engine with CSS Grid & Flexbox Support

The open-source visual page builder Puck has released v0.18, featuring a brand-new drag-and-drop engine with full CSS Grid and Flexbox support for advanced layouts. This release also includes dynamic DropZone height adjustment, an interactive hotkey, a parent selector, and removes restrictive styling for easier embedding. Improvements and deprecations to components and properties are also included; see the changelog for details.

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Fast Fourier Transforms (FFT) Explained: The Cooley-Tukey Algorithm

2025-09-18

This post delves into Fast Fourier Transform (FFT) algorithms, focusing on the Cooley-Tukey algorithm. It begins by defining the Discrete Fourier Transform (DFT) and highlighting its naive O(n^2) time complexity. The author then meticulously derives the Cooley-Tukey algorithm, which reduces complexity by breaking down the DFT into smaller DFTs, achieving O(n log n) for inputs of length 2^n. An interactive visualization demonstrates the algorithm's workings. The post also corrects the common misuse of 'FFT' as a synonym for 'DFT', clarifying that FFT refers to the algorithm, not the transform itself.

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Development

Quebec Halts Subsidies for Troubled EV Maker Lion Electric

2025-05-02
Quebec Halts Subsidies for Troubled EV Maker Lion Electric

The Quebec government announced it will not provide further funding to Lion Electric, an electric vehicle maker struggling financially and seeking creditor protection. Despite Lion Electric's past role as a flagship in Quebec's EV ambitions, the government deemed further investment irresponsible due to shifting US policy, and flaws in Quebec's own subsidy program. This decision jeopardizes the company's restructuring efforts and leaves Quebec school bus operators in a difficult position, facing mandates for electric buses. The government is reevaluating its electrification plan and exploring alternative solutions to meet its EV goals.

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Tech

Nintendo Switch 2 Banned for Playing Used Games?

2025-07-13
Nintendo Switch 2 Banned for Playing Used Games?

A Nintendo Switch 2 user had their new console banned by Nintendo after playing used Switch 1 games. The user purchased four used games from Facebook Marketplace, updated them, and the next day their console was blocked from Nintendo's online services. Luckily, they were able to resolve the issue by providing proof of purchase. This highlights the risks of buying used games, as unscrupulous sellers could copy games, leading to false piracy accusations. While Nintendo is known for its strict IP protection, this shows a willingness to rectify mistaken bans.

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Game Used Games

Canon's New Livestreaming App Doesn't Support Canon Cameras (Yet)

2025-01-20
Canon's New Livestreaming App Doesn't Support Canon Cameras (Yet)

Canon launched "Live Switcher Mobile," an iOS livestreaming app supporting up to three camera views. Surprisingly, it only works with Apple devices and currently lacks support for Canon cameras. The free version is limited to 720p with ads and watermarks. A $18 monthly subscription unlocks 1080p, removes ads, and adds features like picture-in-picture. While lacking some features of free alternatives like OBS Studio, Canon promises upcoming Canon camera support.

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Boeing and FAA Whistleblower System Fails, Leaving Reporters in Limbo

2024-12-30
Boeing and FAA Whistleblower System Fails, Leaving Reporters in Limbo

This article exposes the critical flaws in the whistleblower system at Boeing, its supplier Spirit AeroSystems, and the Federal Aviation Administration (FAA). Numerous whistleblowers report safety concerns at great personal and professional risk, yet the FAA finds no violations in over 90% of cases. This leaves whistleblowers facing retaliation, unemployment, and emotional distress; some have even died as a result. The article uses several whistleblowers' experiences to highlight the system's lack of independence and inadequate protection, calling for reform to ensure aviation safety and protect whistleblower rights.

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GitHub CEO's AI Claims: Fabricated Data or Something Else?

2025-08-09
GitHub CEO's AI Claims: Fabricated Data or Something Else?

The GitHub CEO's recent blog post urging developers to embrace AI or face obsolescence is riddled with logical fallacies and inflated data. The author draws parallels to Soviet-era data manipulation, highlighting the study's minuscule sample size, lack of representativeness, and unreliable conclusions. The 'study' claims AI boosts developer ambition rather than saving time, contradicting the common narrative of increased efficiency, raising questions about its authenticity and motives.

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Development

Marimo: Revolutionizing Python Notebooks with Dataflow Graphs

2025-08-09
Marimo: Revolutionizing Python Notebooks with Dataflow Graphs

Marimo is an open-source Python notebook that represents notebooks as dataflow graphs, unlike traditional REPLs. This representation blends the best of interactive computing with the reproducibility and reusability of Python software. Marimo notebooks function as reactive notebooks, executable scripts, Python modules, and interactive web apps. It addresses shortcomings of traditional notebooks in reproducibility, interactivity, maintainability, and reusability, ensuring code and output synchronization through static analysis, and supporting features like SQL embedding and module hot-reloading. Marimo is used by companies like Cloudflare, Shopify, and BlackRock.

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Development Dataflow Graphs

Umami: A Privacy-Focused Google Analytics Alternative

2025-02-17
Umami: A Privacy-Focused Google Analytics Alternative

Umami is a simple, fast, and privacy-focused alternative to Google Analytics. It supports MariaDB, MySQL, and PostgreSQL databases. Installation is straightforward: clone the GitHub repo, install dependencies, and configure the database connection. It runs by default on http://localhost:3000. Docker images are available for easy deployment. Detailed getting started instructions are provided.

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Development analytics

Apple to Soon Receive 'Made in America' Chips from TSMC's Arizona Fab

2025-01-14
Apple to Soon Receive 'Made in America' Chips from TSMC's Arizona Fab

TSMC's Arizona fab is nearing mass production of chips for Apple, with deliveries expected as early as Q1. This marks a significant step towards US chip independence, previously heavily reliant on Taiwan. While initial chip packaging will still occur in Taiwan, this development mitigates concerns about geopolitical risks and natural disasters disrupting the supply chain. TSMC is actively recruiting American talent and partnering with Arizona State University to foster US chip industry growth.

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Let Users Help Solve Their Own Transit Problems: Beyond Algorithmic Route Planning

2025-01-16

The author criticizes current map apps for relying solely on algorithms to plan public transit routes, neglecting user needs and expertise. He proposes allowing users to customize route options, such as specifying particular bus route combinations, and including these in route planning comparisons. This mirrors the "report spam" and "not spam" functions of email filters, improving algorithms through user feedback. Despite privacy concerns, user participation could enhance route accuracy and user satisfaction, ultimately improving algorithms. The ability for users to add their own route combinations, even without sharing data, would be a significant improvement.

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Development public transit

Observable Notebooks: The Next-Gen Notebook with AI Power

2025-07-30

Observable has launched a new notebook hosted on GitHub, allowing authors to write in their preferred text editor and preview/build using Notebook Kit. The goal is a best-in-class editor supercharging productivity with AI, instant collaboration and sharing in Observable workspaces, and Observable Canvases for rapid visual data exploration and presentation. Open-source and commercial use are both welcome.

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Development

Dropbox Password Manager Sunset: A Smooth Transition Guide

2025-07-30

Dropbox is sunsetting its password manager and recommends migrating to 1Password. This article details how to import data to 1Password or other providers, stressing data security throughout the process. It offers guidance for team administration and user notifications, assuring users their data remains secure during the transition and encouraging them to utilize other Dropbox security features.

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Tech

Critical Vulnerability in GitHub MCP Integration Leaks Private Repo Data

2025-05-27
Critical Vulnerability in GitHub MCP Integration Leaks Private Repo Data

Invariant has discovered a critical vulnerability in the widely-used GitHub MCP integration (14k GitHub stars). A malicious GitHub Issue allows attackers to hijack a user's agent, forcing it to leak data from private repositories. This vulnerability, one of the first discovered by Invariant's automated security scanners for detecting 'Toxic Agent Flows,' involves injecting malicious prompts into a public repository. When a user queries their agent, it fetches the issue and is injected, potentially pulling private repo data into context and leaking it to a public repository accessible to the attacker. Mitigation strategies include granular permission controls and continuous security monitoring. Even highly aligned AI models are susceptible, highlighting the need for system-level security measures.

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The Future of Dashboard Design?

2024-12-23
The Future of Dashboard Design?

This article explores the shortcomings of current dashboard design. The author points out that existing dashboards are often poorly designed and fail to effectively utilize the human visual system to process large amounts of information. The article reviews cognitive systems engineering research from the 80s and 90s on dashboard design, such as ecological interface design and visual momentum, and notes the current industry's lack of focus on improving dashboard design. The author calls for greater attention to dashboard design, to better integrate query functions and improve information processing efficiency.

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Musk's xAI Faces Backlash Over Memphis Data Center's Environmental Impact

2025-06-13

Elon Musk's AI company, xAI, is facing criticism for its Memphis data center, which relies on 35 methane gas turbines operating under a 'temporary' permit, bypassing federal emission regulations. These turbines, lacking crucial pollution control equipment, emit NOx and other hazardous air pollutants. xAI claims the temporary status exempts them from permitting requirements, but critics question this, particularly given the lack of initial investment in pollution control technology. The Guardian reports discrepancies between the number of active turbines and the mayor's claims, further fueling the controversy. The situation highlights a major environmental concern surrounding AI infrastructure development.

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Tech

Twitch Implements 100-Hour Storage Cap for Highlights, Sparking Controversy

2025-02-20
Twitch Implements 100-Hour Storage Cap for Highlights, Sparking Controversy

Twitch announced a new 100-hour storage limit for highlights and uploads, effective April 19th. Content exceeding this limit will be automatically deleted. The platform cites the ineffectiveness of highlights in driving engagement and the high cost of storage as reasons. This decision has drawn criticism, particularly from the speedrunning community, who rely heavily on Twitch archives for record-keeping. While Twitch claims minimal user impact, the move threatens to erase valuable speedrun history and significantly alter the platform's community ecosystem.

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GPUHammer: Practical Rowhammer Attacks on GPU Memory

2025-07-16

Researchers from the University of Toronto have developed GPUHammer, the first successful Rowhammer attack against GPU memory, specifically GDDR6 memory in an NVIDIA A6000 GPU. The attack uses user-level CUDA code to bypass in-DRAM defenses like TRR, inducing bit flips across all tested DRAM banks. This allows a malicious user to tamper with other users' data in shared, time-sliced environments. A proof-of-concept demonstrated an accuracy degradation attack against a victim's DNN model, reducing accuracy from 80% to 0.1% with a single bit flip. While enabling ECC mitigates the risk, it can introduce up to a 10% slowdown for ML inference workloads on the A6000.

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Firefox User Demands: Optimization, Features, and Design Overhaul

2025-07-16
Firefox User Demands: Optimization, Features, and Design Overhaul

A Firefox user voiced strong requests for improvements in speed, features, and design. For the PC version, they demand faster page loading, reduced resource consumption, and the addition of workspaces, split-screen functionality, and a portable version. Design improvements include updated icons and a refreshed interface. Mobile users want fixes for tab reloading issues, faster loading speeds, customizable wallpapers, tab grouping, and workspaces. Transparency on feature development timelines is also requested.

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Development

Autonomous Agents: Turning Every Engineer into an Engineering Manager

2025-08-06

Developer tooling has come a long way, from autocomplete to copilots and now autonomous agents. This article explores how to effectively work alongside these agents to boost development efficiency. Key insights shared include clearly defining tasks, providing sufficient context, leveraging CI/CD for feedback loops, and understanding the limitations of these agents. While not a silver bullet, autonomous agents can significantly save time, freeing engineers from tedious tasks and allowing them to focus on more creative work.

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Development

Taller, Cheaper Wind Turbine Towers: Engineered Wood to the Rescue

2025-05-23
Taller, Cheaper Wind Turbine Towers: Engineered Wood to the Rescue

Building taller wind turbine towers is traditionally expensive, limiting their height and efficiency. A new solution uses engineered wood, offering the strength of steel but with significantly less weight. This eliminates costly reinforcements and maintenance, making taller towers both more efficient and cost-effective. In fact, this modular wooden design becomes even more advantageous the higher it goes, promising a revolution in wind energy.

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Goodbye Port Conflicts: Podman Without Port Forwarding and Containerizing Dev Environments for CLI Addicts

2025-05-08

Frustrated by port conflicts, the author abandoned container port forwarding and instead uses Podman and a Rust-based SOCKS proxy called Podfox to enable direct browser communication with the Podman network. Podfox bypasses the need for host DNS configuration, resolving container hostnames and using Podman network information to locate the gateway address for DNS queries and proxying. The author also shares their experience streamlining command-line development environment containerization using Homebrew and a custom fish script called Podchamp. By mounting the Homebrew prefix and setting environment variables, the same development tools are readily available across different containers without rebuilding images or installing dependencies, boosting efficiency.

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Development dev environment

Ten Windows 11 Improvements We Actually Want

2025-08-16
Ten Windows 11 Improvements We Actually Want

Windows 11 is plagued by useless features and annoying pop-up ads, neglecting what users truly need. This article lists ten crucial improvements: multiple clipboards, multiple clocks in the taskbar, a fourth modifier key, remapping all keyboard shortcuts, a movable and resizable taskbar, an audio firewall, pinning apps to specific screens, program groups launching multiple apps at once, easier audio device switching, and a reduction in Microsoft's distracting features. These enhancements would significantly boost user productivity instead of focusing on flashy, unnecessary features.

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Development OS Improvements

Global ACM-ICPC Rankings: Tsinghua and Peking Universities Shine

2025-09-05

The 2023 ACM-ICPC International Collegiate Programming Contest global rankings are out, with St. Petersburg State University taking the top spot. Notably, Tsinghua University and Peking University secured the fourth and fifth places respectively, showcasing the strong performance of Chinese universities in computer science. The ranking includes many prestigious universities from China, the US, Japan, and Europe, highlighting the fierce competition. This top-tier global event not only tests the programming skills of contestants but also reflects the differences in computer science talent cultivation across various countries and regions.

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