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Math Academy: Effective Drill or Conceptual Roadblock?

2025-04-13

Math Academy: Effective Drill or Conceptual Roadblock?

Math Academy is a popular online math learning platform praised for its gamified approach. However, reviews from math educators are mixed. The author explores its strengths and weaknesses through personal experience, highlighting its effectiveness in procedural fluency (mastering steps) but its shortcomings in conceptual understanding. Math Academy is best used as a supplement to deepen understanding gained from textbooks or lectures, not as the sole learning method. The author advocates prioritizing conceptual understanding, using tools like Math Academy for targeted practice.

(newsletter.ozwrites.com)

Education

YC Backs Epic in Apple App Store Fee Fight

2025-08-25

YC Backs Epic in Apple App Store Fee Fight

Y Combinator filed an amicus brief supporting Epic Games' lawsuit against Apple, arguing that Apple's App Store fees (up to 30%) and anti-steering restrictions stifle startup growth. YC contends Apple's policies create insurmountable barriers to entry, hindering competition and innovation. They urge the court to uphold a previous ruling forcing Apple to allow developers to freely link to off-App Store purchase options without extra fees. This ruling has already spurred renewed investor interest in previously unviable app-based business models.

(www.macrumors.com)

Startup

VW's Self-Driving ID. Buzz Robotaxi Hits Production

2025-06-23

VW's Self-Driving ID. Buzz Robotaxi Hits Production

Volkswagen's MOIA subsidiary has begun mass production of its autonomous ID. Buzz electric van. Equipped with a sophisticated sensor suite achieving SAE Level 4 autonomy, the vehicle will launch in Hamburg, Germany, and expand to the US in partnership with Uber. Unlike Tesla and Waymo's offerings, the ID. Buzz prioritizes practicality and passenger capacity, targeting public transport and airport shuttle services.

(www.jalopnik.com)

Tech

Learning to Love What You Hate: A Self-Experiment

2025-09-02

Learning to Love What You Hate: A Self-Experiment

The author proposes a unique hobby: trying to like things you dislike, using it as a tool to understand human nature. From disliking spinach to appreciating Michael Jackson, and the ongoing struggle with country music and television, the author demonstrates how our aversions often stem from self-perception rather than inherent qualities. Some preferences can be altered, while others are deeply ingrained, depending on the depth of subconscious programming and the difficulty of revising self-concept. The essay uses a lighthearted approach to prompt reflection on personal preferences and understanding.

(dynomight.net)

Misc preference change human nature

Relational Graph Transformers: Unleashing AI's Potential in Relational Databases

2025-04-28

Relational Graph Transformers: Unleashing AI's Potential in Relational Databases

Traditional machine learning struggles to fully capture the valuable insights hidden in the complex relationships between tables within enterprise data. Relational Graph Transformers (RGTs) represent a breakthrough, treating relational databases as interconnected graphs, eliminating the need for extensive feature engineering and complex data pipelines. RGTs significantly improve the efficiency and accuracy of AI in extracting intelligence from business data, showing immense potential in applications like customer analytics, recommendation systems, fraud detection, and demand forecasting. They offer a powerful new tool for both data scientists and business leaders.

(kumo.ai)

AI Relational Graph Transformers Relational Databases

Uber's Route Share: Reinventing the Wheel or Disrupting Public Transit?

2025-06-07

Uber's Route Share: Reinventing the Wheel or Disrupting Public Transit?

Uber's new "Route Share" service, essentially a rebranded bus system, has sparked debate about its effectiveness in addressing traffic congestion and air quality, and its impact on existing public transit. While Uber claims it offers more affordable and predictable transportation, experts point to the higher carbon emissions of ride-sharing services compared to public transit and the lack of public accountability inherent in Uber's model, potentially harming public transit systems. This echoes Silicon Valley's repeated attempts to "disrupt" public transportation, often with disappointing results.

(www.wired.com)

Tech Ride-sharing Public Transit

The 152-Year-Old's Secret: Unraveling Parr's Longevity and Sudden Demise

2025-05-25

The 152-Year-Old's Secret: Unraveling Parr's Longevity and Sudden Demise

Thomas Parr, who lived to be 152, sparked intense curiosity about his longevity. Instead of debating his birthdate, focus shifted to his remarkable lifespan and sudden death. Contemporary accounts emphasized the 'six non-naturals' (air, environment, diet, exercise, sleep, excretion, and emotions) as key factors in health. Physicians attributed Parr's longevity to his clean environment, simple lifestyle, wholesome diet (brown bread, unripened cheese, onions), avoidance of alcohol and stress, and adequate sleep.

(publicdomainreview.org)

Misc longevity healthy living

Supermarket Soft Plastic Recycling: A Well-Intentioned Lie?

2025-05-26

Supermarket Soft Plastic Recycling: A Well-Intentioned Lie?

In 2021, supermarkets launched soft plastic recycling schemes, promising to tackle plastic waste. Marketing and updated labels reassured customers that soft plastics were recyclable and recycled, encouraging them to collect items like bags and packaging for in-store drop-off. However, only about 10% of local councils offer kerbside soft plastic recycling, and industry experts acknowledge significant challenges, deeming large-scale recycling almost impossible. Is this initiative a well-intentioned lie or greenwashing?

(www.everydayplastic.org)

Misc supermarkets

A Simple Blog Builder Script

2025-05-03

This script builds a simple static blog. It reads Markdown files from a specified directory, converts them to HTML using the markdown2 library, and generates static blog pages based on an HTML template. It also creates an index page listing all blog posts with titles and links for easy navigation. The entire process is automated for efficiency and simplicity.

(ostwilkens.se)

Development blog generation

16TB Archive of US Federal Public Datasets Released

2025-02-07

16TB Archive of US Federal Public Datasets Released

Harvard Law School researchers have released a 16TB archive containing over 311,000 datasets, a complete archive of data.gov from 2024 and 2025. The project aims to preserve the integrity and authenticity of data by maintaining detailed metadata and digital signatures, making it easier for researchers and the public to cite and access this information over time. Open-source software and documentation are also released to enable others to replicate the work and create similar repositories. The project is supported by the Filecoin Foundation and the Rockefeller Brothers Fund.

(lil.law.harvard.edu)

Tech data archiving public datasets

Lenovo's Record-Breaking Quarter: AI PCs Fuel Growth

2025-08-14

Lenovo's Record-Breaking Quarter: AI PCs Fuel Growth

Lenovo kicked off its fiscal year with a bang, reporting record PC sales and dominating the AI PC market. Q1 2025/26 revenue hit $18.8 billion, a 22% year-over-year increase, with profits more than doubling. Its PC and smart devices division saw its fastest growth in 15 quarters, achieving a record 24.6% global market share. Over 30% of Lenovo's PC shipments were AI PCs, giving it a commanding 31% market share in the Windows AI PC segment. While the practical usage of AI PC features is debated, Lenovo's premium models and hybrid AI strategy are resonating with consumers. Motorola's foldable phone success also contributed significantly. Lenovo's Infrastructure Solutions Group also thrived, with revenue up 36% and AI infrastructure sales more than doubling. Despite the recovering PC market, Lenovo's strong performance puts it ahead of competitors, but the long-term success depends on sustained demand for AI PC features.

(nerds.xyz)

Tech PC Market

Go's io.Reader Efficiency: A Battle with Indirection and Type Assertions

2025-05-19

Many Go functions take an io.Reader, enabling streaming and avoiding loading everything into memory. However, when you already have the bytes, using them directly is more efficient. This article describes the author's experience decoding images with libavif and libheif. For simplicity, the simple memory interfaces were used, but the Go image.Decode function checks for a Peek function on the io.Reader, wrapping with bufio.Reader if not found, preventing direct use of bytes.Reader. The author cleverly uses type assertions and unsafe.Pointer to bypass bufio.Reader and bytes.Reader, achieving zero-copy. However, the article highlights issues in Go's type checking and interface design, including the resulting 'shadow APIs'.

(flak.tedunangst.com)

Development

Digital Fossils in AI: How Nonsense Terms Become Embedded in Our Knowledge

2025-05-01

Digital Fossils in AI: How Nonsense Terms Become Embedded in Our Knowledge

Scientists discovered the nonsensical term "vegetative electron microscopy" spreading through AI models. Originating from digitization errors in 1950s papers and amplified by translation mistakes, it became ingrained in large language models. This highlights the challenges of massive training datasets, lack of transparency, and self-perpetuating errors in AI. The incident poses serious issues for academic research and publishing, prompting reflection on maintaining reliable knowledge systems.

(www.sciencealert.com)

AI knowledge reliability

Tesla Used Car Prices Plummet Amidst Growing Competition

2025-03-10

Tesla Used Car Prices Plummet Amidst Growing Competition

The used car market is booming! Driven by historically high new car prices, consumers are flocking to the pre-owned market for better deals. Used Tesla Model Ys, in particular, have seen prices drop over $6,000 in the past year, with some low-mileage models available for under $30,000. Used Model 3s are even cheaper, with some high-mileage options dipping below $15,000. This trend is linked to the launch of new Tesla models, increased competition, and shifting consumer search preferences. A surge in rival EV manufacturers is giving consumers more choices, challenging Tesla's market dominance.

(www.forbes.com)

Tech

Rust's New Approach to Uninitialized Buffers: The Buffer Trait

2025-05-21

Uninitialized buffers in Rust have been a long-standing challenge. John Nunley and Alex Saveau introduced a novel solution using a `Buffer` trait. This trait enables safe reading into uninitialized buffers, providing implementations for `&mut [T]` and `&mut [MaybeUninit]`. It also cleverly leverages the spare capacity of `Vec` and encapsulates the unsafe `Vec::set_len` call. This approach is now integrated into rustix 1.0 and released as a standalone library, `buffer-trait`, with potential future inclusion in Rust's standard library.

(blog.sunfishcode.online)

Development Buffer

arXivLabs: Experimental Projects with Community Collaborators

2025-08-31

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. Got an idea for a project that will benefit the arXiv community? Learn more about arXivLabs!

(arxiv.org)

Development

Mori-bito: A Powerful Terminal-Based LDAP Browser

2025-09-02

Mori-bito: A Powerful Terminal-Based LDAP Browser

Mori-bito (forest-person) is a terminal-based LDAP server explorer built with Go and BubbleTea, offering an interactive interface for browsing LDAP directory trees, viewing records, and executing custom queries. Features include interactive tree navigation, a record viewer with clipboard integration, a custom query interface with real-time results and pagination, flexible configuration, secure authentication, automatic update notifications, a modern TUI, and support for multiple connections. Installation is easy via Homebrew, manual download, or quick install scripts. A robust and user-friendly tool for managing LDAP servers.

(github.com)

Development

Systemd Service Unit Restrictions: A Common Cause of Daemon Startup Failures

2025-09-20

A classic problem for Linux system administrators is a daemon failing to start normally but working fine when manually run as root. Traditional causes include incomplete $PATH environment variables, SELinux, and AppArmor. Increasingly, systemd service unit restrictions (documented in systemd.exec) are the culprit. Directives like ProtectHome and PrivateTmp can cause cryptic 'permission denied' or 'file not found' errors, or even indirect failures like blocking DNS queries. Removing restrictions from the daemon's .service file can help diagnose the issue, but future daemons may rely on these restrictions, complicating troubleshooting.

(utcc.utoronto.ca)

Development daemon

German ISP Changes DNS After Website Exposes Copyright Blocking Organization

2025-08-24

A major German ISP altered its DNS settings after the exposure of the CUII, a private organization deciding website blocks without transparency or judicial oversight. The author built cuiiliste.de to track blocked domains, as the CUII refuses to publish its list. The CUII previously mistakenly blocked defunct websites. ISPs initially used notice.cuii.info to indicate blocked sites, but later stopped, making blocked sites appear nonexistent. However, Telefonica (parent of o2, Germany's fourth-largest ISP) continued this method. After Telefonica checked its own test domain, blau-sicherheit.info, on the author's site, they changed their DNS to stop using notice.cuii.info, making tracking CUII blocks harder. This raises suspicions of the CUII trying to bury its mistakes.

(lina.sh)

Tech

Commodore PET BASIC Tokenizer: A Curious Bug

2025-07-05

Commodore PET BASIC Tokenizer: A Curious Bug

This article explores a quirky bug in early Commodore PET BASIC tokenizers stemming from their whitespace handling. Early BASIC interpreters ignored spaces between keywords, leading to 'LET THEN' being interpreted as 'LETHEN', resulting in syntax errors. The article delves into the BASIC tokenization process, explaining why ignoring whitespace improved efficiency, and dissects the Commodore BASIC 1.0 tokenizer code. It ultimately reveals the root cause of the bug and its fix in later versions.

(www.masswerk.at)

Development

Escaping the React Pit: The 'Throwaway Code' Hack

2025-05-09

A programmer struggled with a React side project, spending more time debugging than developing. He described the situation using a Korean proverb, '배보다 배꼽이 더크다' (the belly button is bigger than the belly), highlighting a misplaced priority. After reading 'Pure React', he started writing numerous 'throwaway code' exercises to practice React, rapidly mastering the concepts. He ultimately built a prototype in 30 minutes, impressing a friend. The takeaway: use 'throwaway code' frequently to quickly improve skills and overcome challenges.

(www.sung.codes)

Development quick learning

AI Coding Tools: Productivity Killers?

2025-07-13

AI Coding Tools: Productivity Killers?

A randomized controlled trial involving 16 experienced developers revealed that AI coding tools, contrary to expectations, decreased software development speed by 19%. The study attributed this slowdown to factors such as over-optimism about AI's usefulness, high developer familiarity with the codebase, the complexity of large repositories, and low AI reliability. While AI tools can expedite testing and automate tasks, the need for manual code validation and the lack of learning capabilities negate overall time savings. The researchers emphasize that these findings don't dismiss the future potential of AI tools but highlight the current limitations.

(www.theregister.com)

Development

Kotaemon: Open-Source RAG Tool for Chatting with Your Documents

2025-01-02

Kotaemon: Open-Source RAG Tool for Chatting with Your Documents

Kotaemon is an open-source Retrieval-Augmented Generation (RAG)-based tool that lets you chat with your own documents. It features a clean and user-friendly interface, supporting various Large Language Models (LLMs) such as OpenAI, Azure OpenAI, and local LLMs. Whether you're an end-user performing document QA or a developer building your own RAG pipeline, Kotaemon provides convenient tools and a customizable UI. It supports multiple file types and offers advanced features like multi-modal QA, complex reasoning, and configurable settings.

(github.com)

Development

OIN: 20 Years Defending Open Source From Patent Trolls

2025-04-29

OIN: 20 Years Defending Open Source From Patent Trolls

In the mid-2000s, Linux faced existential threats from patent litigation. To combat this, industry giants like IBM, Novell, and Red Hat formed the Open Invention Network (OIN). Through a royalty-free cross-license agreement, OIN created a powerful defense against patent trolls targeting Linux and other open-source technologies. Over 20 years, OIN has grown to over 4,000 members, holding millions of patents and actively neutralizing patent threats. Microsoft's contribution of its vast patent portfolio further solidified OIN's strength. Today, OIN's protection extends to Android, Kubernetes, and beyond, safeguarding open source in crucial sectors like AI and automotive.

(www.zdnet.com)

Tech Patents

Barbican Estate: A Labyrinthine Utopia in London

2025-05-12

Barbican Estate: A Labyrinthine Utopia in London

Three years after discovering the Barbican Estate online, the author finally visited this unique London complex built between 1965 and 1976. A two-hour resident-led tour revealed a fascinating blend of history, design, and hidden secrets. From underground parking garages filled with abandoned cars to Roman and medieval ruins, even a 1,000-year-old Jewish burial ground, the Barbican is far more than just housing. Inspired by ancient Egyptian and Battalion architecture, it features hidden passages and a dedicated online forum for residents. The article recounts the author's experience and recommends books for a deeper dive into this captivating place.

(arslan.io)

Design Barbican

Rice Plants Inherit Cold Tolerance in Three Generations Through Epigenetic Changes

2025-05-23

Rice Plants Inherit Cold Tolerance in Three Generations Through Epigenetic Changes

A decade-long study reveals that Asian rice plants acquired cold tolerance in just three generations, not through DNA sequence changes, but via epigenetic modifications. Researchers, through cold-stress experiments, discovered that this tolerance stems from epigenetic alterations to chemical markers on the plant's DNA, not the DNA sequence itself. This challenges the traditional view of evolution, suggesting that environmental pressures induce heritable changes without altering the genome. The environment, therefore, acts as a selective force, not just a passive actor.

(www.nature.com)

Tech cold tolerance

Supercapacitors Smooth Out the Power Grid's AI Woes

2025-05-06

Supercapacitors Smooth Out the Power Grid's AI Woes

Massive AI model training strains power grids with massive, instantaneous energy demands—like millions of kettles switching on simultaneously. To address this, companies like Siemens Energy, Eaton, and Delta Electronics are deploying supercapacitors. These devices rapidly charge and discharge, smoothing out the energy fluctuations from AI training, reducing strain on the grid and supporting stable renewable energy supplies. While not a universal solution, supercapacitors are ideal for short-duration, high-energy applications like AI training.

(spectrum.ieee.org)

Tech Supercapacitors

Pornhub Blocked in France, Proton VPN Sees 10x Registration Spike

2025-06-07

Pornhub Blocked in France, Proton VPN Sees 10x Registration Spike

Following Pornhub's blocking of French users due to a new age-verification law, VPN service Proton VPN saw a 1000% increase in registrations within 30 minutes. This surge surpasses the growth seen when TikTok was briefly banned in the US. A Proton VPN spokesperson noted that while their initial aim was to assist users in countries with online censorship, this demonstrates VPN's use in bypassing regional restrictions. The article discusses the controversies surrounding age-verification laws, highlighting potential privacy and free speech concerns, and suggests more effective technical solutions for controlling children's access to adult content.

(mashable.com)

Tech Online Censorship

Ancient Artifact Data Encoded into Wheat Seed DNA

2024-12-31

Artist Wafaa Bilal's latest work, "In a Grain of Wheat," encodes the digital data of the 3,000-year-old Winged Bull of Nineveh into the DNA of Iraqi wheat seeds. The project aims to utilize molecular-digital data storage to preserve damaged Iraqi cultural heritage, combating destruction caused by war and terrorism. By encoding 3D scans of a sister statue from the Metropolitan Museum of Art into the wheat DNA, the project not only restores the ravaged artifact but also initiates a new chapter in transnational collaboration to protect cultural heritage, combining the powers of art, science, and nature to safeguard global cultural memory for future generations.

(wafaabilal.com)

AI digital art cultural heritage preservation

Geometric Frustration: The Secret to the Rose's Shape

2025-05-09

Geometric Frustration: The Secret to the Rose's Shape

Physicists at the Hebrew University of Jerusalem have discovered the mechanical secret behind the rose's iconic shape. Their research, published in Science, reveals that the unique morphology of rose petals is driven by 'Mainardi-Codazzi-Peterson incompatibility,' a geometric frustration. This incompatibility prevents petals from achieving their ideal smooth curve, resulting in the multiple curls and sharp edges we see. The team used a combination of theoretical analysis, computer modeling, and physical experiments to unravel this mechanism, potentially paving the way for new shape-morphing materials.

(phys.org)

Tech rose

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