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Impossible Task: Dissecting a Square into an Odd Number of Equal-Area Triangles

2025-04-19

This article explores a deceptively simple geometric problem: can a square be dissected into any number of triangles with equal area? The answer, surprisingly, is complex. In 1970, Paul Monsky proved that it's impossible to dissect a square into an odd number of equal-area triangles. The proof cleverly combines Sperner's Lemma and 2-adic valuations. By ingeniously coloring the vertices of the triangles and analyzing the number of factors of 2 in the triangle's area using 2-adic valuation, a contradiction is reached, proving the proposition.

(mathmondays.com)

Misc

Ronin the Rat: A World Record for Landmine Detection

2025-04-14

Ronin the Rat: A World Record for Landmine Detection

Ronin, an African giant pouched rat, has set a new world record for landmine detection. Between August 2021 and February 2025, he located 109 landmines and 15 unexploded ordnance in Cambodia. Ronin's incredible sense of smell highlights the vital role animals can play in clearing landmines, a significant threat in post-conflict zones. His achievement underscores the ongoing need for landmine clearance efforts, given the millions of unexploded devices still buried worldwide. Ronin's work with APOPO, a Belgian nonprofit, showcases the effectiveness of using rats for this dangerous task.

(www.cnn.com)

Tech landmine detection animal

DKIM Replay Attack Using Google Sites: A Fake Subpoena Scam

2025-07-25

DKIM Replay Attack Using Google Sites: A Fake Subpoena Scam

A friend received an email seemingly from Google, claiming a court subpoena demanding access to their Google account. While the email appeared legitimate at first glance, header inspection revealed a DKIM replay attack. The attacker used Google Sites to create a phishing site mimicking an official Google support page, forwarding the email via Namecheap's PrivateEmail service, bypassing SPF, DKIM, and DMARC verification. This case highlights the danger of leveraging trusted infrastructure (like Google Sites) for attacks, reminding us to be wary of any suspicious emails demanding urgent action or containing links to login pages.

(easydmarc.com)

Tech DKIM Replay Attack

Atari ST's 40th Anniversary: A Budget 16-bit GUI Revolution

2025-01-09

Atari ST's 40th Anniversary: A Budget 16-bit GUI Revolution

Atari's 1985 CES unveiling of the Atari ST, a 16-bit GUI computer, sent shockwaves through the industry with its surprisingly low price ($800-$1000 for a 520ST bundle). While the 130ST failed due to insufficient RAM, the 520ST's powerful performance and innovative GEM operating system made it a hit, challenging Commodore and Apple and injecting new energy into the personal computer market. Its impact on software development remains significant.

(www.goto10retro.com)

Tech 16-bit computer

YC-Backed Startup Recover Seeks Finance Lead

2025-04-22

YC-Backed Startup Recover Seeks Finance Lead

Recover, a Y Combinator-backed startup, is making addiction treatment more effective and accessible for low-income individuals. They're rapidly expanding and searching for an experienced Finance Lead to manage financial reporting, cash management, and compliance. The ideal candidate will have 4+ years of relevant experience, possess systems thinking, strong organizational skills, and problem-solving abilities. This is a full-time, fully remote position offering competitive salary, equity, and PTO.

(www.ycombinator.com)

Startup finance lead

The Real Book: A Bootlegged Jazz Bible

2025-03-28

The Real Book: A Bootlegged Jazz Bible

Since the mid-1970s, nearly every jazz musician has owned a copy of 'The Real Book,' an illegally copied collection of jazz standards. Its story begins with earlier 'fake books' – simplified sheet music – evolving from Tune-Dex cards. Two Berklee College of Music students created a modern, updated version, reflecting contemporary jazz styles. Its popularity led to widespread bootlegging, until Hal Leonard legally published it. The book’s legacy, however, sparks debate about copyright and the very nature of jazz, with some criticizing its simplification of this complex art form.

(99percentinvisible.org)

Misc Music History

A Tiny Forth for the 6502: Under 600 Bytes

2025-03-28

A Tiny Forth for the 6502: Under 600 Bytes

This article details a highly minimized Forth implementation for the 8-bit 6502 CPU, achieving a size of under 600 bytes. The author compares two interpreter models: Direct Threaded Code (DTC) and Minimal Threaded Code (MTC), opting for DTC for its smaller size. The project focuses on size over performance, aiming to verify standard DTC against MTC variations. The resulting Forth includes core primitives and is tested with `my_hello_world.FORTH`, demonstrating functionality.

(github.com)

Development

Sharing Is Scaring: The Unexpected Link Between Cloud File Sharing and Programming Language Semantics

2025-09-03

Users frequently struggle with cloud file-sharing applications. This study argues that these difficulties stem not just from poor interfaces, but also from a fundamental misunderstanding of the underlying semantics of actions like linking, attaching, downloading, and editing—mirroring challenges in grasping programming concepts such as aliasing, copying, and mutation. A user study reveals widespread misconceptions by mapping known programming-education misunderstandings onto similar file-sharing tasks. The researchers also developed a formal semantics of cloud file-sharing operations, providing a foundation for improved mental models, educational tools, and automated assistance. This formalization can support applications like trace checking and workflow synthesis.

(cs.brown.edu)

Development programming language semantics

DeepSeek Infrastructure Profiling Data Released

2025-02-27

DeepSeek is publicly sharing profiling data from its training and inference framework to help the community understand its communication-computation overlap strategies and low-level implementation details. The data, captured using the PyTorch Profiler, can be visualized directly in Chrome or Edge browsers. The analysis simulates a perfectly balanced MoE routing strategy and covers training, prefilling, and decoding phases. Different configurations (e.g., EP64/TP1, EP32/TP1, EP128/TP1) and micro-batching strategies are optimized for computation and communication overlap to improve efficiency.

(github.com)

Development Profiling

Consumer Reports Slams Microsoft's Windows 10 Update Deadline

2025-09-17

Consumer Reports Slams Microsoft's Windows 10 Update Deadline

Consumer Reports is urging Microsoft to extend the October 14th deadline for free Windows 10 security updates, arguing that millions of users with incompatible hardware will be left vulnerable. With approximately 46.2% of global users still on Windows 10 (August 2025 data) and an estimated 200-400 million PCs unable to upgrade to Windows 11, Consumer Reports calls Microsoft's policy hypocritical. They criticize the $30 fee for a one-year extension and the company's tactics of pushing users towards Microsoft products. Both Consumer Reports and a Public Interest Research Group (PIRG) are petitioning for extended free support to prevent millions of perfectly functional computers from being discarded.

(www.theverge.com)

Tech Security Updates

Joplin 3.2: Open-Source Note-Taking App Gets Multi-Window Support

2025-04-21

Joplin, an open-source note-taking application, has released version 3.2, featuring long-awaited multi-window support, multi-column layouts, enhanced accessibility, and theme detection. This versatile app supports Markdown, plugins, multimedia, and various synchronization methods including end-to-end encrypted cloud sync and local storage. While built with Electron, resulting in higher resource consumption, Joplin's robust feature set and active community make it a compelling option for note-taking.

(lwn.net)

Development Note-taking App

Legacy Airlines Crack Down on Carry-On Bags

2024-12-31

Legacy Airlines Crack Down on Carry-On Bags

Flying with legacy carriers like British Airways or Air France used to mean included checked baggage and carry-on. However, to compete with low-cost airlines, many legacy carriers are now eliminating free carry-on allowances and even complimentary meals. Air Canada, for example, will no longer allow standard carry-on bags on North American and Caribbean routes from January 3rd, only permitting small personal items. Other airlines like United and Finnair have adopted similar strategies. This 'basic economy' fare is blurring the lines between legacy and budget airlines, adding extra costs for passengers.

(www.telegraph.co.uk)

Tech low-cost airlines carry-on baggage

USB Gets a Much-Needed Logo Overhaul: Speed is King

2025-01-13

The USB Implementor Forum (USB-IF) has unveiled a new labeling scheme for USB docking stations and cables, aiming to simplify the confusing speed designations that plagued consumers. Previously, terms like "USB 3.2 Gen 2" were unhelpful. The new system clearly displays transfer speeds, such as "USB 80Gbps" or "USB 40Gbps." This clarity extends to USB4 and USB4v2, simplifying branding and removing the "USB4v2" designation. The updated logos also appear on cables, specifying data transfer rates and power delivery capabilities. This change promises a more user-friendly experience, making it easier for consumers to select appropriate USB devices and cables.

(www.pcworld.com)

Hardware Speed

Tilt: Streamlining Kubernetes Microservice Development

2025-04-26

Tilt: Streamlining Kubernetes Microservice Development

Tilt simplifies Kubernetes microservice development by automating the entire process from code changes to new processes, including file watching, container image building, and environment updates. Say goodbye to cumbersome `docker build && kubectl apply` commands. Tilt offers comprehensive tutorials and guides, supports multiple programming languages, and boasts an active community and well-maintained documentation. Even Kubernetes newcomers can quickly get started and boost their development efficiency.

(github.com)

Development Dev Tool

Algebraic Effects: The Future of Programming Languages?

2025-05-24

Algebraic Effects: The Future of Programming Languages?

This article delves into the use of algebraic effects (effect handlers) in programming languages. Algebraic effects are a powerful mechanism that allows for implementing various language features such as exceptions, generators, and asynchronous operations as libraries, enhancing code composability. Using examples in Ante, the article demonstrates how algebraic effects can implement exception handling, generators, and coroutines, and how they can be leveraged for dependency injection, cleaner API design, and replacing global variables. Furthermore, algebraic effects can improve code purity, enhance replayability, and boost security. While efficiency concerns exist, advancements in compilation techniques suggest algebraic effects are poised to become a core feature in future programming languages.

(antelang.org)

Development algebraic effects

How to Disable Apple Intelligence on Your Devices

2025-02-01

Apple's built-in AI system, Apple Intelligence, offers convenient features but might raise privacy concerns for some users. This guide explains how to disable Apple Intelligence on iPhones, iPads, and Macs, and how to selectively disable it for specific apps. Turning off Apple Intelligence disables AI-powered features like intelligent suggestions and proofreading, but core functions like Face ID will still use on-device machine learning. Users can also choose to disable Apple Intelligence for individual apps, balancing convenience with the protection of sensitive data.

(www.asurion.com)

Tech

arXivLabs: Experimenting with Community Collaboration

2025-04-17

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved embrace arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who share them. Have an idea to enhance the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Development

Requirements Change Until They Don't: Formal Methods and System Evolution

2025-04-28

Requirements Change Until They Don't: Formal Methods and System Evolution

This article explores how to handle constantly changing requirements in software development. While extensive upfront formal modeling might be impractical with frequent changes, the author argues that formal methods become crucial when systems reach scale or undergo architectural shifts (phase transitions). Formal specification and verification ensure that improvements don't break existing functionality. Using the example of switching from synchronous to asynchronous updates, the author demonstrates how formal methods can verify that a new system satisfies old requirements, highlighting the importance of software maintenance and preventing the silent failure of features.

(buttondown.com)

Development requirements change

Microsoft: AI Saves $500M, But Layoffs Continue

2025-07-10

Microsoft: AI Saves $500M, But Layoffs Continue

Microsoft CCO Judson Althoff revealed that AI has saved the company over $500 million in call center costs and improved employee and customer satisfaction. AI is also used to handle interactions with smaller customers and generates 35% of the code for new products, accelerating product launches. Despite this, Microsoft has laid off approximately 15,000 employees this year, including customer-facing roles like sales. Microsoft emphasizes that AI will improve employee efficiency, but denies a direct correlation between layoffs and AI-driven productivity gains.

(finance.yahoo.com)

Tech

Global Tech Talent Map: Hot Tech & Job Locations

2025-01-28

HNHIRING's latest job trends report paints a picture of the global tech talent landscape. It lists the hottest programming languages, tech stacks, and job locations. The report reveals high demand for talent in cloud computing, AI, and big data, with North America, Europe, and parts of Asia emerging as tech talent hubs. This report is a valuable resource for job seekers and companies alike, offering insights into market demand and talent distribution.

(hnhiring.com)

Tech tech talent job trends tech stack

Sleep Trackers: Are They Really Measuring What Matters?

2025-04-11

Sleep Trackers: Are They Really Measuring What Matters?

Affectable Sleep challenges the efficacy of sleep trackers. The article argues that trackers overemphasize sleep duration and consistency, neglecting sleep quality and restorative function. For example, a tracker might give a low score even if someone gets a short but deeply restorative sleep. Trackers fail to interpret the physiological mechanisms behind sleep, offering only post-hoc analysis and no real-time optimization. The article advocates focusing on the physiological and neurological processes of sleep rather than mere data, and calls for a new approach that prioritizes sleep quality over quantity.

(www.affectablesleep.com)

Tech

Figma IPO Priced at $33 per Share

2025-07-31

Figma IPO Priced at $33 per Share

Design collaboration platform Figma announced its initial public offering (IPO) of 36,937,080 shares of Class A common stock priced at $33.00 per share. The shares are expected to begin trading on the New York Stock Exchange on July 31, 2025, under the ticker symbol "FIG." The offering includes shares offered by Figma and existing stockholders. Morgan Stanley, Goldman Sachs, Allen & Company, and J.P. Morgan are acting as joint lead book-running managers. Founded in 2012, Figma has evolved from a design tool into a connected, AI-powered platform, streamlining the entire design and product development process.

(www.figma.com)

Startup Design Collaboration

The Sudoku Affair: Two Approaches to Software Design

2025-02-05

This article recounts the experiences of Ron Jeffries and Peter Norvig in building Sudoku solvers. Jeffries, employing an incremental design approach, started with a simple List[Option[Int]] representation, iteratively refining it until completion. However, the resulting code was verbose and lacked elegance. Norvig, leveraging his expertise in search algorithms, used a Map[Coord, Set[Int]] representation, resulting in concise and efficient code that showcased constraint propagation. The article contrasts these design philosophies, highlighting the impact of domain knowledge on coding style and prompting reflection on software design methodologies.

(explaining.software)

Development programming philosophies

Deep Dive into JVM Startup

2025-01-09

Billy Korando from Oracle's Java team published an in-depth article on January 9, 2025, exploring the intricacies of JVM startup. The article provides a detailed look into the internal mechanisms of JVM initialization, offering valuable insights for Java developers. Readers are encouraged to check the video description for further information.

(inside.java)

Development

Homebrew Channel Source Code Repository Reveals Massive Copyright Infringement

2025-04-29

Homebrew Channel Source Code Repository Reveals Massive Copyright Infringement

The source code repository for the Wii homebrew software, The Homebrew Channel, has been released, but its core library, libogc, has been exposed for massive copyright infringement. The libogc developers not only stole proprietary Nintendo code but also an open-source RTOS, RTEMS, removing all attribution and copyright information. The developers ignored inquiries, even resorting to abuse and deleting comments to avoid accountability. Due to the severity of the copyright issues, the project is archived and further development is discouraged. The incident underscores the importance of respecting copyright and adhering to legal regulations.

(github.com)

Development

arXivLabs: Experimenting with Community Collaboration

2025-04-24

arXivLabs is a framework for collaborating on and sharing new arXiv features directly on the website. Participants embrace arXiv's values of openness, community, excellence, and user data privacy. Got an idea to improve the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Development

ADHD Body Doubling: A Surprisingly Effective Productivity Hack

2025-04-06

ADHD Body Doubling: A Surprisingly Effective Productivity Hack

This article explores 'ADHD body doubling,' a productivity technique where someone with ADHD works alongside another person – the 'body double' – to improve focus and task completion. A retired VP, David, struggling with everyday tasks despite organizational skills, discovered the unexpected effectiveness of having his wife nearby. The presence, not the advice, of the body double acts as an anchor, combating distractions. While the scientific mechanism is unclear, the article proposes several theories, including social pressure, mirror neuron effects, and energy balance, along with benefits and tips for finding the right body double.

(add.org)

Development

GPT-5 Excels in Qodo's Code Review Benchmark

2025-08-08

GPT-5 Excels in Qodo's Code Review Benchmark

Qodo used its private PR Benchmark, simulating real-world code review workflows, to evaluate top language models including GPT-5. Results showed GPT-5 excelled at understanding code diffs, identifying bugs, and suggesting improvements. Its 'minimal' variant balanced speed and quality impressively. While GPT-5 had some weaknesses like false positives and inconsistent labeling, its overall code review performance was striking, marking significant progress in AI-assisted code review.

(www.qodo.ai)

Development

Disneyland's 70th Anniversary: A Hyperrealistic Walt Disney Animatronic

2025-05-04

Disneyland's 70th Anniversary: A Hyperrealistic Walt Disney Animatronic

To celebrate Disneyland's 70th anniversary, a new attraction, "Walt Disney — A Magical Life," will debut, featuring a hyperrealistic animatronic Walt Disney. This technologically advanced figure aims to recreate Disney's presence and mannerisms, sparking debate about ethical considerations and the respect for the deceased. While some family members voiced concerns, Disney maintains support from others and emphasizes the project's goal: showcasing Walt Disney's life to new generations, beyond the company's branding.

(www.yahoo.com)

Tech Animatronic Theme Park

Thunderbird 140 Released: Dark Mode, Easy Setting Sync, and Exchange Support

2025-07-09

Thunderbird email client version 140 is out, boasting several new features. A standout is "dark message mode," adapting message content to dark themes. It also features easy transfer of desktop settings to the mobile Thunderbird client, experimental Microsoft Exchange support, and global controls for message threading and sort order. This is an extended-support release (ESR) with 12 months of support, though Thunderbird encourages users to switch to the monthly Release channel. A staggered rollout to existing users helps catch bugs before widespread deployment, but manual upgrades are available via Help > About. Check the release notes for a complete changelog.

(lwn.net)

Development email client

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