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Unlocking Spherical Trigonometry with Quaternions

2025-01-30

This article leverages the algebraic properties of quaternions to derive a 'master equation' for spherical trigonometry, elegantly proving the spherical law of cosines, the spherical law of sines, and Napier's rules. The author cleverly connects quaternions to the relationships between sides and angles of spherical triangles, using rotations and inner products to derive concise and elegant formulas. Applications to practical problems like calculating sunrise and sunset times are discussed, showcasing the power of quaternions in geometric problems.

(terrytao.wordpress.com)

Misc quaternions spherical trigonometry

The Naivete of Tech Geeks: Why Big Tech Lies and How to Fight Back

2025-03-29

The Naivete of Tech Geeks: Why Big Tech Lies and How to Fight Back

This article criticizes the naive trust many tech geeks place in large tech companies like Amazon and Apple. The author argues that claims of 'privacy protection' are largely marketing ploys, masking the core goal of data collection. Using examples like Alexa, Apple's privacy policies, and spam email, the article exposes how big tech exploits user naivety and reliance on marketing. The author calls on tech geeks to shed their naivete, avoid being misled by marketing, choose companies and open-source projects that genuinely prioritize privacy, and actively participate in building commons beyond the control of large tech corporations.

(ploum.net)

Tech

German Navy Ships Sabotaged, Raising Concerns About Russia

2025-02-14

German Navy Ships Sabotaged, Raising Concerns About Russia

Germany's Inspector of the Navy announced Tuesday that multiple German warships were sabotaged. This follows a report by Süddeutsche Zeitung detailing metal shavings found in the engine system of a new corvette. While not explicitly accusing any party, the naval chief warned of a growing threat from Russia. The incidents follow a string of suspicious fires and explosions at German ammunition facilities and factories, raising concerns about potential Russian involvement and the escalating threat to German and NATO security. Investigations are ongoing, but the sabotage points to a potential deliberate act of aggression.

(www.businessinsider.com)

Tech German Navy

Product Managers in the Age of AI: New Tools, Same Core Principles

2024-12-22

Product Managers in the Age of AI: New Tools, Same Core Principles

Despite the trendy term "AI Product Manager," AI hasn't fundamentally changed product management's core: understanding user needs, creating solutions, and defining tasks. AI provides powerful new tools like Large Language Models (LLMs), but PMs still leverage these tools, not build them. The article explains basic LLM concepts (tokens, context windows, prompts) and advises PMs to learn effective prompting, collaborate closely with engineers, and focus on AI's practical value for the product, avoiding trendy additions. In short, AI is a tool, not a replacement; PMs must embrace AI and enhance their skills to thrive in this era.

(productme.org)

Development Product Management

Finley Technologies Hiring Growth Associate to Fuel Fintech Expansion

2024-12-22

Finley Technologies Hiring Growth Associate to Fuel Fintech Expansion

Finley Technologies, a Y Combinator and Bain Capital Ventures-backed fintech startup, is seeking a Growth Associate. This role focuses on the credit fund segment and requires 2-3 years of finance experience, strategic thinking, entrepreneurial spirit, and strong communication skills. The successful candidate will help shape go-to-market strategy, product roadmap, and more, collaborating with a team to drive company growth.

(jobs.lever.co)

Startup Growth Associate

Unearthing Lost Gaming History: A Deep Dive into Games That Weren't

2025-06-26

Unearthing Lost Gaming History: A Deep Dive into Games That Weren't

Games That Weren't (GTW), a non-profit archive, is dedicated to preserving cancelled and unreleased video games. Recently uncovered treasures include a rare Alien 3 prototype for the Commodore 64, the Flash game Carts of Fury, and an early Game Boy title, Sorcerer. These discoveries offer glimpses into the often-unknown stories behind game development, showcasing GTW's significant contribution to game preservation. Operating since 1999, GTW's extensive archive spans various platforms and eras, providing invaluable resources for gaming enthusiasts.

(www.gamesthatwerent.com)

Game game prototypes

Gracefully Handling JSON Sum Types in Go: Avoiding Panics

2025-03-19

Go doesn't natively support sum types, but this article demonstrates how to emulate them in Go and safely handle JSON encoding and decoding to avoid runtime panics. The author uses a real-world example to illustrate using a "sealed interface" approach and code generation tools (OpenAPI Generator and Protocol Buffers) to gracefully handle JSON sum types. This achieves compile-time type safety and effectively prevents runtime errors. The article also compares alternative implementations and explores the advantages of the V language in handling sum types.

(nicolashery.com)

Development

The AI Bubble: Déjà Vu or a New Paradigm?

2025-08-25

This article explores whether the current surge in AI investment constitutes a bubble, drawing parallels to historical examples like the Railway Mania and the dot-com bubble. The author highlights common patterns in tech bubbles: technological breakthroughs, capital influx, speculative frenzy, and reality checks. Despite the unprecedented transparency of the current AI bubble, the allure of participation remains strong. The article concludes by examining reasons why AI might defy historical patterns, strategies for profiting from the inevitable correction, and the importance of rational investment and risk management.

(craigmccaskill.com)

Tech historical patterns

Wordsworth's Open Letter Supporting Copyright Reform

2025-09-04

Wordsworth's Open Letter Supporting Copyright Reform

In 1838, William Wordsworth penned a powerful letter to Serjeant Talfourd, MP, voicing his staunch support for a bill aimed at reforming copyright law. Faced with significant opposition from printers and publishers, Wordsworth declined to petition Parliament, instead choosing to publicly declare his belief in authors' inherent right to perpetual ownership of their works—a right far exceeding the bill's proposed term. He argued this right stemmed from common law and criticized opponents for hiding behind existing statutes, avoiding a defense of this fundamental right. The letter also touches upon his concerns for literary giants like Coleridge, Scott, and Southey, expressing his deep respect and gratitude for Talfourd's efforts.

(gutenberg.org)

Misc Literary History

Sharing a ChatGPT Account: How AI Transformed Our Lives

2025-02-15

Sharing a ChatGPT Account: How AI Transformed Our Lives

The author and his wife share a ChatGPT Pro account and utilize AI in distinct ways. His wife, in education and social work, employs AI for drafting addiction prevention materials, writing yoga studio contracts, and researching health information. The author primarily uses it for coding, software development, market research, and task automation. They discovered AI's applications extend beyond technical tasks, serving as a tool to enhance efficiency, aiding in planning and executing tasks, ultimately freeing up more time for family.

(startupbaniya.com)

Misc efficiency improvement

Azerbaijan Airlines Crash: Missile Accident Emerges as Probable Cause

2024-12-25

Azerbaijan Airlines Crash: Missile Accident Emerges as Probable Cause

An Azerbaijan Airlines Embraer 190 crashed near Aktau, Kazakhstan, killing 38 of the 67 people on board. Initial reports from the investigation suggest the plane may have been accidentally hit by an air-defense missile while approaching Grozny. Surviving passengers reported hearing an explosion and seeing shrapnel hit the plane. The incident bears resemblance to the 2014 downing of MH17, also suspected to involve a surface-to-air missile. While the Azerbaijani president attributed the crash to a weather-related course change, the possibility of a missile accident is under investigation.

(www.euronews.com)

Tech plane crash missile Azerbaijan Airlines

The Rise of Independent Research: Escaping Academia's Walls

2025-02-25

This article explores the resurgence of independent research, focusing on the concept of the "gentleman scientist." Historically, many prominent scientists relied on personal wealth or family funding for their work, such as Darwin and Joule. Today, academia is often seen as the sole path to research, but this isn't necessary. The article uses Norman Borlaug as an example, showing how a lack of formal training can sometimes lead to more surprising results. While independent research lacks institutional backing and makes validation harder, it also offers greater freedom and risk-taking. The author encourages more people to pursue independent research, sharing their findings publicly to contribute to society.

(nadia.xyz)

Tech independent research academic system

My Home Assistant Journey in 2025

2025-01-24

My Home Assistant Journey in 2025

This blog post details the author's seven-year journey with Home Assistant, starting from a simple setup with IKEA smart bulbs in a small apartment to a sprawling smart home with over 100 devices. The core of the post focuses on using Home Assistant's Adaptive Lighting for sophisticated light control and leveraging an AI coding assistant, Cursor, to streamline YAML configuration and debugging. The author shares optimized Adaptive Lighting configurations for various IKEA bulb types and outlines plans to integrate smart radiator valves for more precise room temperature control.

(vpetersson.com)

Development

Tencent's Hunyuan3D Model Gets a Speed Boost and Texture Generation

2025-03-20

Tencent's Hunyuan3D Model Gets a Speed Boost and Texture Generation

Tencent has released an updated version of its open-source Hunyuan3D model, featuring a smaller, faster 'mini' variant. This update not only improves inference speed but also adds texture generation capabilities, resulting in significantly enhanced 3D model visuals. Code changes focus on optimized model loading, parameter adjustments, and a streamlined texture generation pipeline with broader file format support. This makes the powerful 3D modeling technology more accessible to a wider range of developers.

(github.com)

Development Tencent Hunyuan3D

Adversarial Policies Defeat Superhuman Go AIs

2024-12-24

Researchers achieved a >97% win rate against the state-of-the-art Go AI, KataGo, by training adversarial policies. These adversaries didn't win by playing Go well, but by tricking KataGo into making critical blunders. The attack transferred zero-shot to other superhuman Go AIs and was simple enough for human experts to replicate without algorithmic assistance. The vulnerability persisted even after KataGo was adversarially trained to defend against it, highlighting surprising failure modes in even superhuman AI systems.

(arxiv.org)

AI adversarial policies AI vulnerabilities Go AI

Critical YouTube Flaw Leaks User Emails via Pixel Recorder

2025-02-12

Critical YouTube Flaw Leaks User Emails via Pixel Recorder

A critical vulnerability in YouTube allows attackers to leak the email address of any YouTube user by exploiting the Google Pixel Recorder service. The attack chain involves first obtaining the user's obfuscated Gaia ID through YouTube's /get_item_context_menu endpoint. Then, by leveraging Pixel Recorder's sharing functionality and bypassing notification mechanisms, the attacker converts the Gaia ID into the email address. While the exploit requires a complex chain of steps, its impact is significant, resulting in a $10,500 bounty from Google.

(brutecat.com)

Tech YouTube vulnerability privacy leak

Steam for Chromebook Beta to Shut Down in Early 2026

2025-08-09

Steam for Chromebook Beta to Shut Down in Early 2026

Launched in 2022, the Steam for Chromebook Beta program will end in early 2026. Despite being a significant part of ChromeOS's gaming push, the program hasn't received updates in a long time. Google announced that installed games will no longer be playable after January 1st, 2026. However, Google hints at a future for Chromebook gaming, emphasizing continued support through Android apps and cloud gaming services.

(9to5google.com)

Game

Axel Springer's Copyright Battle Against Ad Blockers: Is Website Code Software?

2025-08-19

German publisher Axel Springer has been battling ad blocker Adblock Plus for years. Initially using competition law, they lost. They then pivoted to copyright law, arguing Adblock Plus' modification of their website code constitutes infringement. The German Federal Court of Justice overturned a previous ruling, siding with Axel Springer, stating website code is copyrightable software, and its modification may be infringement. This case has drawn significant attention; its outcome could profoundly impact the software industry, internet ecosystem, and even the future of online news' pay models and access to information.

(torrentfreak.com)

Tech ad blockers

Open Source License Dispute: A Fight for Software Freedom

2025-02-13

The Software Freedom Conservancy (SFC) filed an amicus brief supporting a downstream licensee's right to remove “further restrictions” under the Affero General Public License version 3 (AGPLv3) Section 7 in the ongoing Neo4j, Inc. v. PureThink, LLC case. The core issue revolves around whether Neo4j's added “Commons Clause” can be removed. SFC argues that downstream licensees have the right to remove such restrictions under AGPLv3 Section 7, paragraph 4, even if imposed by the original licensor. SFC's brief provides detailed legal analysis of AGPLv3 Sections 7 and 10, arguing that the lower court wrongly sided with Neo4j's interpretation, which could fundamentally alter the community's understanding of adding and removing “further restrictions.” The ruling will have significant implications for software freedom and users' rights.

(sfconservancy.org)

Development legal dispute

38C3 Chaos Communication Congress: A Digital Celebration

2024-12-25

From December 27th to 30th, 2021, the 38th Chaos Communication Congress (38C3) took place in Hamburg, Germany. The event featured a wide range of activities including talks, self-organized sessions, lightning talks, and more. Information was disseminated through the official website, event blog, and digital map. Volunteer registration, an information desk, and accessibility support were also provided to foster an inclusive and welcoming atmosphere.

(events.ccc.de)

Misc Tech Conference Digital Community

AI Draws Entire City Road Networks with One Click

2024-12-21

AI Draws Entire City Road Networks with One Click

Imagine drawing all the roads in a city with a single click! This technology, once seemingly straight out of science fiction, is now a reality thanks to AI. Advanced algorithms and massive data analysis allow AI to quickly and accurately map a city's entire road network, providing an efficient tool for urban planning, traffic management, and infrastructure development. This technology not only improves efficiency but also opens up new possibilities for more refined city management, ushering in a new era of smart city planning.

(anvaka.github.io)

AI Urban Planning Road Network Mapping

arXivLabs: Experimental Projects with Community Collaborators

2025-04-03

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

(arxiv.org)

Development

Ramoops: Persistent Logging for Embedded Systems

2025-05-24

Ramoops: Persistent Logging for Embedded Systems

Embedded systems aren't immune to crashes. To analyze and log these crashes, a persistent storage solution is crucial. Ramoops provides this by leveraging a reserved RAM area to store kernel oops messages, kernel console output, and user messages. While RAM data is lost on power loss, it offers faster write speeds and is almost always available while the CPU is running. This article details configuring and using Ramoops on a Toradex Apalis iMX8QM system, covering device tree modification, kernel compilation, and reading log files from pstore. It demonstrates logging kernel panics and user messages, aiding in diagnosing system crashes.

(embear.ch)

Development crash logging ramoops

Visualizing the World's Books in ISBN-Space

2025-02-01

Visualizing the World's Books in ISBN-Space

A developer created a stunning visualization of the world's books using ISBNs. Clever algorithms and space-filling curves map massive datasets into a 2D space, rendered in real-time with WebGL and GLSL shaders. Users can explore publication years, countries, and more, even customizing the visualization. This project showcases the power of data visualization and a developer's passion for knowledge and technology.

(phiresky.github.io)

Development

Is Creating a Perfectly Spherical Prince Rupert's Drop Possible?

2024-12-14

An engineering question explores the possibility of creating a perfectly spherical Prince Rupert's drop. Prince Rupert's drops are glass objects formed by dripping molten glass into cold water, their unique internal stresses making them incredibly tough except at the tail. The article discusses how, theoretically, in a zero-gravity environment by controlling the cooling rate and removing the effects of gravity, a spherical Prince Rupert's drop could be made, but significant practical challenges remain.

(engineering.stackexchange.com)

Tech Prince Rupert's Drop Glass Material Science

Qubes OS Unveils Secure PDF Conversion Tool

2024-12-12

The Qubes OS team has developed a novel security mechanism for converting untrusted PDFs into trusted ones. Leveraging Qubes' Disposable VMs, the process isolates PDF parsing within a secure container. The PDF is converted to a simple RGB image representation, then back to a PDF. This approach effectively mitigates attacks from malicious PDFs; even if parsing fails, the resulting PDF will only be a corrupted image, posing no system threat. This innovation significantly enhances Qubes OS security, allowing users to handle PDFs from the web or email more safely.

(blog.invisiblethings.org)

Tech secure PDF conversion disposable VMs

Breaking Change: List API Filter Overhaul with Nested Expressions

2025-05-25

Breaking Change: List API Filter Overhaul with Nested Expressions

The List API has undergone a significant update, now supporting nested and complex filter expressions. This is a breaking change requiring users to update their client libraries. All clients have been updated to support the new syntax and assist in constructing nested filters. For raw HTTP users, the filter format changed from col[ne]=val to filter[col][$ne]=val, following QS conventions. For example, excluding a value range [v_min, v_max]: ?filter[$or][0][col][$gt]=v_max&filter[$or][1][col][$lt]=v_min. A new Swift client implementation has been added. The release version is now shown in the admin dashboard with a link to the release page. Dependencies have also been updated.

(github.com)

Development API Update Filters Nested Expressions

Microplastics Found in Human Brains: A Growing Threat?

2025-02-15

Microplastics Found in Human Brains: A Growing Threat?

A recent study revealed the presence of significant microplastic levels in human brains. These microplastics, entering the brain via the bloodstream, are potentially linked to various illnesses. The article highlights the environmental and health dangers of our reliance on plastic, pointing to the polluting nature of its production and its persistence in the environment. While the US government has taken steps to regulate harmful chemicals in plastic production, the impact remains limited. The author urges accountability for the petrochemical industry rather than solely blaming consumers.

(www.scientificamerican.com)

Tech environmental pollution

Kashmir's Frozen EV Dream: How Cold Weather Is Killing the Electric Revolution

2025-09-15

Kashmir's Frozen EV Dream: How Cold Weather Is Killing the Electric Revolution

Bashir Ahmad, an apple farmer in Kashmir, sold his wife's gold jewelry to buy an electric three-wheeler, hoping to revolutionize his business. However, winter arrived and brought his dreams crashing down. Extreme cold drained 60% of the vehicle's battery overnight, stranding tons of fruit and leaving customers frustrated. This highlights a global crisis: EVs lose significant range in cold temperatures, despite billions spent on technological advancements. The problem is particularly acute in cold regions with poor infrastructure, like Kashmir, where the $2 billion apple industry is significantly impacted. The story raises questions about the practicality and environmental impact of widespread EV adoption in cold climates, showcasing the need for cold-weather-optimized technology and supporting infrastructure before a true electric revolution can take place.

(restofworld.org)

Tech Cold Weather Performance

C++26 to Feature Compile-Time Reflection: Goodbye Boilerplate, Hello High Performance

2025-06-22

Herb Sutter has announced that C++26 will include compile-time reflection, a game-changer for C++ development. Compile-time reflection provides access to a program's own structure, enabling tasks like enumerating a class's methods. This is particularly impactful for libraries like simdjson, allowing high-speed conversion between custom data structures and JSON strings without boilerplate code. The article demonstrates generating efficient SQL insert statements using compile-time reflection, reducing boilerplate and improving code reusability and safety. While the code might look complex, the performance gains and code simplification are significant.

(lemire.me)

Development Compile-time Reflection

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