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arXivLabs: Experimental Projects 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 partners with those who share them. Have an idea to enhance the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Tech

Somehash: A Blurhash-Inspired Image Placeholder

2025-04-15

Somehash: A Blurhash-Inspired Image Placeholder

To enhance user experience, this article introduces Somehash, an image placeholder solution similar to Blurhash but with a creative twist. Somehash extracts dominant colors from images using a Python script (leveraging KMeans clustering) and encodes them into a Base64 string. A React component decodes this string and renders an animated placeholder using lines until the high-resolution image loads. The author also discusses areas for improvement, such as optimizing encoding/decoding and creating a smoother transition to the full image.

(travisbumgarner.dev)

Development image placeholder frontend performance

XChat's End-to-End Encryption: The Juicebox Security Flaw

2025-06-09

XChat's End-to-End Encryption: The Juicebox Security Flaw

Matthew Garrett exposes security vulnerabilities in X's (formerly Twitter) new end-to-end encrypted messaging protocol, XChat. XChat uses the Juicebox protocol to store user private keys, distributing them across three servers. However, these servers are all controlled by X, meaning X can access all user keys, undermining end-to-end encryption. The article delves into Juicebox's mechanics and potential risks, highlighting critical flaws in XChat's deployment. User private keys are vulnerable to arbitrary access by X, leading to the recommendation to avoid using XChat.

(blog.cryptographyengineering.com)

Tech

Fibonacci Hashing: A Surprisingly Fast Hash Table Optimization

2025-04-16

Fibonacci Hashing: A Surprisingly Fast Hash Table Optimization

This article explores Fibonacci Hashing, a technique for mapping hash values to slots in a hash table that leverages the properties of the golden ratio. Benchmarks show it significantly outperforms traditional integer modulo operations, offering faster lookups and better robustness against problematic input patterns. The author explains the underlying mathematics and demonstrates its advantages, highlighting how it addresses common performance bottlenecks in hash table implementations. While not a perfect hash function, Fibonacci Hashing excels at mapping large numbers to smaller ranges, making it a valuable optimization for creating efficient hash tables.

(probablydance.com)

Development

The Rise and Fall (and Potential Resurrection?) of Stack Overflow

2025-06-02

The Rise and Fall (and Potential Resurrection?) of Stack Overflow

Stack Overflow, once a haven for developers, thrived on a culture of mutual help and knowledge sharing. However, a gamified reputation system inadvertently fostered competition over collaboration, slowly eroding its vibrant community. The advent of AI further exacerbates this trend, prompting reflection on the future of developer communities. Stack Overflow's journey serves as a cautionary tale: tech platforms that prioritize genuine community over mere content generation are more likely to thrive, particularly in the age of AI.

(www.infoworld.com)

Development

Ruby 3.4: Gradual Transition to Frozen String Literals

2025-07-09

Ruby 3.4 initiates a multi-version transition towards frozen string literals by default. Currently, Ruby 3.4 offers opt-in warnings when deprecation warnings are enabled, ensuring backward compatibility. Warnings will be enabled by default in Ruby 3.7, with frozen string literals becoming the default in Ruby 4.0. This change promises performance gains through string deduplication, reducing garbage collection and memory usage. The article details how to enable warnings, fix issues, and migrate existing code, advocating a phased upgrade approach.

(www.prateekcodes.dev)

Development Strings

NordVPN's New Protocol Aims to Evade VPN Blockers

2025-01-29

NordVPN's New Protocol Aims to Evade VPN Blockers

NordVPN has unveiled NordWhisper, a new protocol designed to bypass VPN blocks prevalent in countries like Russia and India. By mimicking regular internet traffic, it aims to fool ISPs and websites into thinking the traffic isn't from a masked service. While not foolproof and potentially adding latency, NordWhisper offers a valuable tool for users seeking access to restricted content or enhanced privacy. It's currently rolling out for Windows, Linux, and Android, with support for other platforms planned.

(gizmodo.com)

Tech

Tesla's European Sales Dip Despite Booming EV Market

2025-09-23

Tesla's European Sales Dip Despite Booming EV Market

While Europe's electric vehicle market is booming, with a 26% year-over-year sales increase in August, Tesla is experiencing a downturn in European sales. Data reveals significant drops in sales for the Model Y (34%) and Model 3 (29%). Although Tesla remains a top 10 EV maker in Europe, its market share is being eroded by brands like Volkswagen, which saw a 45% year-over-year sales increase in August. Despite Tesla's struggles, the overall European EV market remains robust, with August sales reaching 154,582 units, representing 20% of new car sales – enough to meet the EU's emission targets for 2025-2027.

(www.notebookcheck.net)

Tech

Klarna's AI Customer Service Experiment: From All-AI to Hiring Spree

2025-05-15

Klarna's AI Customer Service Experiment: From All-AI to Hiring Spree

Fintech startup Klarna, after replacing its marketing and customer service teams with AI in 2024, is now scrambling to hire human agents. Their experiment, initially touted as a cost-saving measure, backfired due to poor customer experience resulting from the AI's shortcomings. Klarna's CEO admits that cost optimization overshadowed quality, leading to a significant shift in strategy. This case highlights the challenges and limitations of current AI technology in real-world applications, particularly in customer-facing roles.

(futurism.com)

Tech human resources

Hormone Therapy: A Personal Journey of Sensory and Psychological Transformation

2025-06-19

Hormone Therapy: A Personal Journey of Sensory and Psychological Transformation

This blog post details the author's personal experience with feminizing hormone therapy and its impact on gender dysphoria. It provides a detailed account of the physiological and psychological changes experienced, including alterations in taste, smell, somatic sensations, spatial perception, and mood. The author explores the relationship between hormone therapy, neurotransmitters, and neuroreceptors, and its effects on the nervous system. Personal experiences in managing gender dysphoria are shared, along with speculation on the underlying mechanisms of hormone therapy's effects, prompting reflection on gender identity and neuroscience.

(smoothbrains.net)

Misc Hormone Therapy Gender Dysphoria

Git's 20th Anniversary: From Humble Beginnings to Version Control Domination

2025-04-07

Git's 20th Anniversary: From Humble Beginnings to Version Control Domination

Twenty years ago today, Linus Torvalds made the first commit to Git. Since then, it's become the dominant version control system. This article recounts Git's early history, from its origins as a tool to address version control and collaboration challenges in the Linux kernel community, to its evolution into the powerful system we know today. Author Scott Chacon shares his personal journey with Git, explaining how it transformed from a simple "stupid" content tracker into a feature-rich VCS that reshaped software development. The story also delves into the origins of some core Git commands and the birth of GitHub's iconic Octocat.

(blog.gitbutler.com)

Development

ProtonMail: Top Features of a Privacy-Focused Email Service

2025-03-14

ProtonMail prioritizes user privacy with its core features: end-to-end encryption ensuring only the recipient can read emails; zero-access encryption, preventing even ProtonMail servers from accessing messages; open-source and audited code for transparency and security confidence; and anti-phishing tools to protect against cyber threats. These features combine to create a robust privacy shield.

(porkbun.com)

Tech

Mysterious Rotations: Unraveling the Mystery of 3240 Iterations

2025-05-06

This data logs the number of iterations and total rotation angle of an object rotating at different angles. Angles range from 0.25° to 120°, iterations from dozens to thousands, and total rotation angles from hundreds to tens of thousands of degrees. This suggests a complex algorithm or mechanical device at play, demanding further investigation. Is this data from a scientific experiment or the operational parameters of some artistic installation?

(jk-keller.com)

Misc rotational motion

Strong Links vs. Weak Links: The Plight of Science

2025-02-08

Strong Links vs. Weak Links: The Plight of Science

This article explores the concepts of 'strong-link problems' and 'weak-link problems'. Weak-link problems, such as food safety, depend on the quality of the worst link; strong-link problems, like scientific progress, depend on the quality of the best link. Many mistakenly treat science as a weak-link problem, focusing excessively on preventing poor research, thereby stifling groundbreaking work. The author argues that this stems from the intense competition and status concerns within academia, ultimately leading to stagnation in scientific progress.

(www.experimental-history.com)

Tech weak links strong links

Ugly Gerry: A Font Fighting Gerrymandering

2025-05-30

Ugly Gerry: A Font Fighting Gerrymandering

Ugly Gerry is a typeface whose letters are shaped like US congressional districts, a protest against gerrymandering. Created by Ben Doessel and James Lee for RepresentUs, the font's intentionally grotesque design aims to highlight the unfairness of manipulated district lines. While dubbed "the world's most revolting font," its provocative design earned it a 2020 ADC Award for typography, successfully bringing attention to a crucial political issue.

(en.wikipedia.org)

Design gerrymandering

1964: Was it Really a Musical Turning Point? Data Reveals the Truth

2025-03-15

1964: Was it Really a Musical Turning Point? Data Reveals the Truth

This article uses Billboard chart data to investigate whether 1964 was truly a watershed year for popular music, as many claim. Analyzing 175 acts that charted in the top 40 in 1963, the author finds that half never had another top 40 hit after 1964. However, this wasn't unique to 1964; similar trends appeared in other years. The article argues that while the British Invasion significantly impacted the music landscape, the US music scene was also undergoing its own evolution. The piece also features the remarkable longevity of Frankie Valli, along with song recommendations from Doechii and The Newbeats.

(www.cantgetmuchhigher.com)

Misc music history British Invasion

AI Chatbot Implicated in Teen Suicide: Legal Battle Over Liability

2025-05-31

AI Chatbot Implicated in Teen Suicide: Legal Battle Over Liability

A Florida judge ruled that First Amendment protections don't shield an AI company from a lawsuit alleging its chatbots played a role in an Orlando teen's suicide. The lawsuit, filed by the teen's mother, claims Character.AI's chatbots, mimicking Game of Thrones characters, contributed to her son's death. The judge rejected the defendants' First Amendment defense, arguing that AI-generated text isn't protected speech. However, the judge dismissed claims of intentional infliction of emotional distress and claims against Google's parent company, Alphabet. Character.AI stated they've implemented safety features and look forward to defending their position on the merits.

(www.legalnewsline.com)

AI teen suicide

Bikini Atoll: An Ecological Miracle Amidst Atomic Scars

2025-03-15

Bikini Atoll: An Ecological Miracle Amidst Atomic Scars

Nearly 60 years after 23 nuclear detonations scarred Bikini Atoll, it appears as an idyllic Pacific paradise once again. However, Stanford professor Stephen Palumbi's research reveals a surprising ecological recovery near Bravo Crater, the site of the most powerful US bomb ever detonated. Flourishing coral reefs and fish populations exist despite the devastation. Palumbi's team will sequence the genomes of corals and coconut crabs to study genetic mutations and adaptation to radiation, with potential applications in cancer research. This research highlights the ocean's resilience while serving as a stark reminder of the past and the importance of preventing similar disasters.

(medium.com)

Tech nuclear testing ecological recovery genomic research

Ravens Show Unexpected Geometric Skills

2025-04-20

Ravens Show Unexpected Geometric Skills

Researchers at the University of Tübingen have demonstrated that ravens possess the ability to recognize geometric regularity. In a study published in Science Advances, carrion crows were trained to identify an outlier shape amongst several similar ones. The crows successfully distinguished subtle differences in shapes, exhibiting an understanding of right angles, parallel lines, and symmetry. This challenges previous assumptions about animal cognition, suggesting this ability may be more widespread than previously thought.

(phys.org)

AI geometric recognition raven

A Journey to Optimize Cloudflare D1 Database Queries

2025-04-07

A Journey to Optimize Cloudflare D1 Database Queries

A frontend developer encountered performance bottlenecks while using Cloudflare Workers and the D1 database. By monitoring the D1 dashboard, examining query statements, and analyzing row read/write counts, they identified several key issues: slow single queries, inefficient batch writes, unnecessary row reads due to including IDs in update operations, full table scans from count queries, Cartesian product explosions from multi-table joins, and suboptimal bulk inserts. Solutions involved leveraging D1 batch operations, excluding IDs from updates, implementing cursor-based pagination, splitting multi-table join queries, and optimizing bulk insert statements. These optimizations drastically improved query performance, reducing execution time from 78ms to 14ms in some cases. The experience highlights the importance of continuous monitoring, iterative optimization, and the crucial differences between server-side and client-side performance issues.

(gist.github.com)

Development database optimization

OpenJKDF2: Open-Source Reimplementation of Jedi Knight: Dark Forces II Engine

2025-02-23

OpenJKDF2: Open-Source Reimplementation of Jedi Knight: Dark Forces II Engine

OpenJKDF2 is a function-by-function reimplementation of the Jedi Knight: Dark Forces II (JKDF2) engine in C, with 64-bit ports for Windows 7+, macOS 10.15+, and Linux. It aims for fidelity to the original, including the original byacc and flex for COG script parsing. A valid copy of JKDF2 is required; the DRM-free GOG version is recommended. Multiple configurations are supported, using OpenGL and WebGL rendering. The project is ongoing, with features like Android and iOS support planned. A WebAssembly demo is available.

(github.com)

Game

Vertical Sharding: A Nightmare?

2025-04-13

The author recounts their experience with vertical sharding (functional sharding), highlighting its pitfalls. While it alleviates database load, it fragments the application, forcing the application layer to handle joins and queries that should be handled by the database. This significantly increases code complexity and maintenance overhead, and reduces system availability. Using humor and an uptime formula, the author shows how vertical sharding lowers system stability, ultimately delaying product roadmaps and demoralizing engineers. The article concludes by introducing PgDog, an open-source project aiming to solve Postgres sharding.

(pgdog.dev)

Development vertical sharding

Ancient Greek Art Duel Remixed: The Hardham Mural and the Illusion of Reality

2025-03-05

Ancient Greek Art Duel Remixed: The Hardham Mural and the Illusion of Reality

This article connects a 12th-century mural at Hardham church to the famous painting contest between Zeuxis and Parrhasios in ancient Greece. Parrhasios, known for his deceptively realistic curtain painting, tricked even Zeuxis. The Hardham mural uses this same trick in its depiction of 'The Deception of Adam and Eve', challenging viewers' perceptions of images. The article explores the nature and value of art and warns against being fooled by visual realism, advocating for a 'spiritual vision' to transcend the limitations of visible things.

(keithamcgowan.blogspot.com)

Design Painting Techniques Visual Perception

OpenAI's New Models Hallucinate More: Bigger Isn't Always Better

2025-04-18

OpenAI's New Models Hallucinate More: Bigger Isn't Always Better

OpenAI's recently released o3 and o4-mini models, while state-of-the-art in many ways, exhibit a troubling increase in hallucinations compared to their predecessors. Internal tests reveal significantly higher hallucination rates than previous reasoning models (o1, o1-mini, o3-mini) and even traditional non-reasoning models like GPT-4o. OpenAI is unsure of the cause, posing a challenge for industries demanding accuracy. Third-party testing confirms this issue, with o3 fabricating steps in its reasoning process. While excelling in coding and math, the higher hallucination rate limits applicability. Addressing model hallucinations is a key area of AI research, with granting models web search capabilities emerging as a promising approach.

(techcrunch.com)

AI hallucinations

Writing a Windows Kernel Driver in Rust

2025-02-08

Writing a Windows Kernel Driver in Rust

This article details the experience of writing a Windows kernel driver in Rust. The author overcomes the verbosity of converting between Rust and C/C++ types, using `wdk` crates to build a simple WDM driver – "Booster" – capable of changing the priority of any thread. The article walks through project setup, dependency configuration, core code implementation, driver installation, and testing, highlighting challenges and future improvements for Rust in kernel driver development.

(scorpiosoftware.net)

Development kernel driver

From Curiosity to Code: A Software Engineer's 30th Birthday Reflection

2025-04-06

From Curiosity to Code: A Software Engineer's 30th Birthday Reflection

On his 30th birthday, the author reflects on his 12-year journey from a curious kid who loved breaking computers to a software engineer. This first installment of a multi-part series details his path: from experimenting with command lines and learning to program via online forums, to building (and repeatedly breaking) Linux systems, and finally creating Neopets shops using HTML and CSS. He highlights the importance of curiosity, exploration, the role of online communities in learning, and the effectiveness of gamified learning.

(danielsada.tech)

Development

Why Doesn't the Electron Fall into the Nucleus?

2025-04-28

Why Doesn't the Electron Fall into the Nucleus?

Classical physics predicts that an electron orbiting the nucleus would radiate energy and spiral into the nucleus, causing the atom to collapse. Quantum mechanics offers a different explanation. Electrons don't orbit in defined paths but exist in a probability cloud, with their position and momentum subject to the Heisenberg uncertainty principle. As an electron approaches the nucleus, its potential energy decreases, and its kinetic energy increases, reaching a balance that prevents it from falling in. Probability density plots show the electron is most likely near the nucleus, but radial probability plots show the highest probability at the Bohr radius. This explains atomic stability and highlights the fundamental difference between quantum and classical mechanics.

(chem.libretexts.org)

Tech electron

Firefox on the Brink: Could Antitrust Action Kill the Browser?

2025-05-04

Firefox on the Brink: Could Antitrust Action Kill the Browser?

Mozilla CFO Eric Muhlheim testified that implementing the Department of Justice's proposals to curb Google's search monopoly could put Firefox out of business. Google's deal to be Firefox's default search engine accounts for roughly 85% of Mozilla's revenue. Losing this revenue would force significant cuts and could lead to Firefox's demise. Muhlheim argued that while the DOJ aims to foster competition, the short-term impact could be devastating for Firefox, potentially even strengthening Google's dominance.

(www.theverge.com)

Tech

Stop Explaining e with Compound Interest

2025-04-11

Math classes often introduce the natural constant *e* using compound interest: a 100% annual interest account doubles with yearly compounding, becomes 2.25 times with semi-annual compounding, approximately 2.714 times with daily compounding, and exactly *e* times with continuous compounding. However, this is misleading. Compound growth is exponential, but the example uses linear division of compounding periods. Banks must separately publish the interest rate, compounding interval, and annual percentage yield. There are far more elegant ways to introduce *e*, such as its unique property of being its own derivative, or its crucial role in Euler's formula. These approaches don't require prior knowledge of *e* and are mathematically more rigorous.

(blog.danielh.cc)

Misc math natural constant e compound interest

The H-1B Lottery Reform: A Wage Level Mirage

2025-09-25

The H-1B Lottery Reform: A Wage Level Mirage

The Department of Homeland Security proposed replacing the H-1B lottery with a weighted system based on Department of Labor (DOL) Wage Levels. However, research reveals this system doesn't prioritize high-skill or high-pay workers. Instead, it favors large outsourcing firms, reduces visas for US-educated graduates, and only marginally increases H-1B holder salaries. Analysis of FOIA data shows a compensation-based system would be far more effective at attracting high-skilled talent and significantly raising average H-1B salaries.

(ifp.org)

Tech

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