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Medieval Trebuchet Range Calculation: A Physics Problem Based on Energy Conservation

2025-02-06
Medieval Trebuchet Range Calculation: A Physics Problem Based on Energy Conservation

This article estimates the range of a medieval trebuchet by calculating energy conservation. The author first analyzes the process of converting the potential energy of the counterweight into the kinetic energy of the projectile, taking into account energy losses. Then, using a simplified integration method (avoiding complex calculus), the author calculates the flight time of the projectile in the air and ultimately estimates the range of the trebuchet, comparing it with data from historical documents, with surprisingly consistent results. The article points out that the range of the trebuchet is independent of gravitational acceleration, which is counterintuitive, but the author explains this phenomenon through analysis.

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(michaeldominik.substack.com)
Tech medieval technology

Post-WWII Highways: Debunking Myths and Unveiling the Truth

2024-12-17
Post-WWII Highways: Debunking Myths and Unveiling the Truth

This article explores key events and misconceptions surrounding the development of highways after World War II. It clarifies that Germany's Autobahn was not initially designed for military purposes, but rather to stimulate the economy and enhance national prestige. While Allied forces utilized the Autobahn in the later stages of WWII, this wasn't its original intent. The article debunks the myth that the US Interstate system was designed with one mile in five being straight and level for emergency bomber landings, explaining its true purpose was civilian benefit and economic development, although it also served military needs, such as troop movement and industrial production. Finally, the article reviews post-WWII attempts and exercises by various militaries to utilize highways as emergency runways for aircraft, highlighting their limitations and ultimate replacement by dedicated airfields.

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(wwiiafterwwii.wordpress.com)
Tech highways WWII

Coding Without Bugs: A Viable Approach for Small Teams and Startups

2025-01-23
Coding Without Bugs: A Viable Approach for Small Teams and Startups

A senior engineer shares their experience of pursuing 'bug-free coding' at Telegram and various projects. While seemingly inefficient, they argue that this approach avoids massive maintenance costs and team burnout in the long run. The author uses personal anecdotes and project examples to demonstrate that focusing on code quality and maintainability alongside product velocity leads to efficient development and high-quality products.

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(korshakov.com)
Development Code Quality

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.

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(phiresky.github.io)
Development

Ambermoon Advanced: A Massive RPG Expansion Released in Episodes

2025-03-31
Ambermoon Advanced: A Massive RPG Expansion Released in Episodes

Indie developer Pyrdacor is releasing Ambermoon Advanced, an unofficial expansion for the RPG Ambermoon, in episodic installments. Five episodes are planned, with the first three currently available, featuring content like "Mysteries of the Sea" and "Elemental Creatures." The game runs on Amiga and modern systems, though the Amiga version is still under development. The developer notes that the game is a work in progress and may contain bugs and imbalances. A physical manual is also planned, containing game information and Ambermoon lore.

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(github.com)
Game Game Expansion

Overprovisioning Fiber: Better Safe Than Sorry

2025-03-25

When planning fiber cabling between rooms or buildings, err on the side of caution and install more fiber than you initially need. Future expansion, bandwidth upgrades, and new protocols all demand extra capacity. Furthermore, fiber failures do happen—sometimes inexplicably—and having spare pairs allows for quick recovery. While single-mode and multi-mode fibers have different applications, having sufficient redundancy is crucial for minimizing downtime and costs.

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(utcc.utoronto.ca)
Hardware fiber cabling network infrastructure redundancy

Carta's Difficult Subscription Cancellation Process Sparks Outrage Among Founders

2024-12-12
Carta's Difficult Subscription Cancellation Process Sparks Outrage Among Founders

Funding management software Carta is facing criticism for its cumbersome subscription cancellation process. Several founders have taken to social media to complain about the difficulty of cancelling their subscriptions, citing mandatory meetings scheduled well after their renewal dates. While Carta attributes the issue to a temporary staffing shortage, competitors highlight their straightforward cancellation methods, involving simple clicks or emails. This controversy raises concerns about Carta's customer service and cancellation policies, underscoring the importance of careful consideration when choosing service providers.

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(techcrunch.com)
Startup subscription cancellation startup

Browser UX/UI Redesign: What AI Agents Need

2025-01-18
Browser UX/UI Redesign: What AI Agents Need

The rise of AI agents demands a redesign of browser UX/UI. This article explores current limitations, including inadequate information architecture, limited accessibility, and insufficient APIs. A redesigned browser should prioritize data accessibility, automation, streamlined interfaces, and security. Key principles for AI-friendly design include context-aware interfaces, low-latency interaction, and modular, customizable designs. Case studies (Brave, Microsoft Edge, Opera) showcase successful AI integration, highlighting the need for a user-centric approach in creating browsers that seamlessly accommodate both human and AI users.

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(fromzero.ghost.io)
Development UX/UI Design

Netventory: A Fast, Single-Binary Network Scanner

2024-12-22
Netventory: A Fast, Single-Binary Network Scanner

Netventory is a cross-platform network scanning tool distributed as a single binary, requiring no dependencies and running on Linux, Mac, and Windows. Its sleek terminal interface and powerful features make it accessible to network administrators, security professionals, and anyone needing quick network visibility. Netventory boasts multiple detection methods (TCP, UDP, ARP), port scanning, MAC address resolution, and hostname resolution, with real-time progress tracking and detailed device information. Simple commands enable network auditing, security assessments, and network management tasks.

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(github.com)
Tech network scanning single binary

Heap Explorer: A Powerful Glibc Heap Debugger

2025-02-06
Heap Explorer: A Powerful Glibc Heap Debugger

`explore_heap` is a glibc heap debugger loaded via `LD_PRELOAD` that allows interactive inspection and manipulation of a program's heap memory. By loading `libheap_explorer.so` and interrupting the program with a SIGINT signal (Ctrl+C), users enter a REPL to allocate, free chunks, and print freelists, tcache, fastbin, and bin lists, aiding in debugging memory-related issues. Currently tested on Arch Linux's glibc 2.41+, adaptation for other modern glibc versions requires adjusting constants.

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(github.com)
Development heap debugging memory management

RISC-V Hypervisor in 1,000 Lines of Rust

2025-09-10

This online book teaches you how to build a minimal RISC-V hypervisor capable of booting Linux-based operating systems using Rust. A sequel to 'Operating System in 1,000 Lines', it starts from bare-metal programming and leverages Rust's ecosystem to simplify development, aiming for a type-1 hypervisor in under 1,000 lines of code. Implementation examples are available on GitHub.

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(1000hv.seiya.me)
Development Hypervisor

Exult 1.10.1 Released: Fixing Ultima VII Compatibility Issues

2025-02-22

The Exult project recently released version 1.10.1, fixing crashes in the Windows version caused by older CPU incompatibility, and the inability to install mods on the Android version. The project aims to bring the classic RPG Ultima VII to modern operating systems, constantly improving the gaming experience. The latest release also features new icons and improved combat mechanics.

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(exult.sourceforge.io)
Game Game Port

Garmin's $40B Pivot: From Car GPS to Fitness Watch King

2025-01-21
Garmin's $40B Pivot: From Car GPS to Fitness Watch King

GPS pioneer Garmin faced near-extinction from Apple and Google's rise. However, massive R&D investment allowed a dramatic pivot, transforming the company from a car navigation device firm into a leader in fitness watches and trackers. The article details Garmin's journey, from the invention of GPS and Garmin's founding to its transition from car navigation to the outdoor and fitness tracking market. Its sustained R&D spending enabled survival and growth in a fiercely competitive landscape, showcasing the importance of continuous innovation and adaptation.

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(www.readtrung.com)
Tech Transformation

Postgres Language Server: A Powerful SQL Toolchain for Developers

2025-03-29
Postgres Language Server: A Powerful SQL Toolchain for Developers

This project offers a comprehensive toolchain for Postgres development, built upon Postgres' own parser (libpg_query) for guaranteed 100% syntax compatibility. Employing a server-client architecture with transport-agnostic design, it provides access via LSP, CLI, HTTP APIs, and WebAssembly. Current features include autocompletion, syntax highlighting, type checking (using EXPLAIN insights), and a linter. Future development focuses on enhancing these core features and building a robust infrastructure. Contributions are welcome!

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(github.com)
Development Developer tools

Multiplayer Shooter Game in Lisp: A Solo Dev's Odyssey

2025-01-22
Multiplayer Shooter Game in Lisp: A Solo Dev's Odyssey

A solo developer built a web-based multiplayer third-person shooter, Wizard Masters, using Clojure, a Lisp dialect. Leveraging Clojure's REPL for rapid iteration and Babylon.js for graphics, the article details the game's rule system, networking architecture, and area-of-effect damage calculations. Challenges faced include state management, the lack of a strong Clojure game development community, and web platform limitations. The author concludes by weighing the pros and cons of web game development and emphasizes the crucial role of tooling, hinting at a potential shift to a mainstream engine like Unity or Unreal in the future.

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(ertu.dev)
Game

Apple's Cautious AI Approach: Is Slow and Steady Winning the Race?

2025-03-29
Apple's Cautious AI Approach: Is Slow and Steady Winning the Race?

Apple's slow rollout of AI features has drawn criticism. The article argues that not Apple, but AI itself is the laggard. Apple's focus on user experience and data security prevents it from releasing buggy AI features. Instead of rushing out flawed products, Apple prioritizes a cautious approach, waiting for the technology to mature. While investors crave a 'super cycle,' forcing immature AI into products could backfire, harming user experience and brand trust.

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(www.cnn.com)
Tech

Serbian Gov't Used Zero-Day Exploit to Spy on Dissenting Student

2025-03-01
Serbian Gov't Used Zero-Day Exploit to Spy on Dissenting Student

Amnesty International revealed that the Serbian government used a zero-day exploit, sold by Cellebrite, to compromise the phone of a student critical of the government. The exploit bypassed the lockscreen of a fully patched Android device, leveraging vulnerabilities in Linux kernel USB drivers. This incident shows that despite Cellebrite suspending sales to “relevant customers” in Serbia, the government continues its surveillance campaign against civil society, highlighting its repression of dissent.

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(arstechnica.com)
Tech government surveillance

Fast LLM Inference Engine Built From Scratch

2024-12-15

This article details the author's journey in building an LLM inference engine from scratch using C++ and CUDA, without relying on any libraries. The process provided a deep dive into the full stack of LLM inference, from CUDA kernels to model architecture, showcasing how optimizations impact inference speed. The goal was to create a program capable of loading weights from common open-source models and performing single-batch inference on a single CPU+GPU server, iteratively improving token throughput to surpass llama.cpp. The article meticulously outlines the optimization steps on both CPU and GPU, including multithreading, weight quantization, SIMD, kernel fusion, and KV cache quantization, while analyzing bottlenecks and challenges. The final result achieves near state-of-the-art performance for local LLM inference.

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(andrewkchan.dev)
Development LLM inference

YC Backs EU's Digital Markets Act, Challenging Big Tech

2025-03-14
YC Backs EU's Digital Markets Act, Challenging Big Tech

Y Combinator, a prominent startup accelerator, surprisingly publicly endorsed the EU's Digital Markets Act (DMA), a law aimed at curbing Big Tech's monopolistic practices. YC argues the DMA, unlike other criticized EU tech regulations, aligns with values promoting American innovation. They cite examples like Apple's delayed AI voice assistant as evidence of a lack of competitive pressure. While less influential in Washington than a16z, YC's public support, alongside other startups and trade associations, puts pressure on the Trump administration. This advocacy aims to unlock opportunities for smaller American firms in AI, search, and consumer apps.

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(techcrunch.com)
Startup

Itch.io's Payment Processing Predicament: Is Building Your Own System the Answer?

2025-08-16

Itch.io faced backlash after payment processors forced them to remove adult content. Many suggested Itch.io create its own payment system or use one that handles adult material. A seasoned SRE with a background in finance and tech debunks these easy solutions. The article details the immense challenges of building a payment processor: bank sponsorship, licensing, KYC/KYCC compliance, and substantial security and compliance costs. Even finding an adult-content-friendly processor (like CCBill) comes with exorbitant fees and risks. The core issue, however, is that any part of the payment chain can be influenced by political pressure or moral censorship. Switching processors won't solve Itch.io's fundamental problem. The author ultimately pleads for understanding of Itch.io's position and a search for systemic solutions, rather than simple blame or boycotts.

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(voidfox.com)
Tech adult content

GitHub: Surface-Stable Fractal Dithering

2025-01-23
GitHub: Surface-Stable Fractal Dithering

Rune Skovbo Johansen invented a novel surface-stable fractal dithering technique. This allows dither patterns in 3D scenes to stick to surfaces while maintaining approximately constant dot size and spacing on screen, even as surfaces move. This GitHub repository provides a Unity example project, shader and texture source files, and details on dither properties and global options like radial compensation and quantized layers. The technique achieves this by dynamically adding or removing dots, and offers 3D textures of varying dot densities. Licensed under MPL-2.0, encouraging community contributions.

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(github.com)
Development 3D Graphics Dithering

Why My Personal Website Is Built With C

2025-03-30

The author, blogging since 2017, tried Django and Nuxt.js for their website, but abandoned them due to high maintenance costs. They finally chose C and the md4c library to build a static site, prioritizing speed, minimal dependencies, and long-term stability. This significantly reduced maintenance overhead. In contrast, the author found other static site generators like Hugo to be overly powerful and unnecessarily complex for their needs.

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(marcelofern.com)
Development static site generation

AIs Develop Secret Language to Boost Efficiency, Raising Privacy Concerns

2025-02-28
AIs Develop Secret Language to Boost Efficiency, Raising Privacy Concerns

A viral video showcases two AI agents conversing before switching to a non-human-intelligible 'Gibberlink' mode upon recognizing each other. Using the GGWave protocol, they communicate via beeps, far more efficiently than speech, saving compute resources and energy. The developers argue this is crucial as AI-to-AI calls become prevalent. However, this technology sparks concern: AI communicating in an uninterpretable language raises potential privacy and security risks.

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(www.iflscience.com)
AI AI Communication

Rackmounting the Unrackmountable: A HiFi DIY Adventure

2025-03-03
Rackmounting the Unrackmountable: A HiFi DIY Adventure

This article chronicles the author's journey to build a custom 2U rack unit for their HiFi system, integrating a DAC, input selector, and streaming device. Using OpenSCAD for design and CNC turret punching for fabrication, they encountered challenges with curve precision in the DXF output, solved by using FreeCAD. Initial attempts with a HiFiBerry hat proved unreliable, leading to a switch to a Wiim Pro. The project highlights the joys and challenges of DIY, resulting in a functional and aesthetically pleasing unit. Code is available on Github.

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(calbryant.uk)
Hardware Rack Mounting

Arch Gateway: Secure and Efficient Prompt Handling for GenAI Apps

2025-03-05
Arch Gateway: Secure and Efficient Prompt Handling for GenAI Apps

Arch Gateway, built by Envoy Proxy contributors, simplifies and optimizes the development of generative AI applications. It leverages purpose-built LLMs to handle prompts, providing intent-based routing, robust security (preventing jailbreaks), API integration, and comprehensive observability. Arch Gateway supports multiple LLMs and utilizes Envoy for high performance and scalability. A user-friendly CLI and detailed documentation are provided, with a quickstart guide demonstrating the creation of a simple AI agent, such as a currency exchange agent.

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(github.com)
Development

Visualizing the YC Company Landscape

2024-12-26

Mike Alche has created a visualization tool showcasing the Y Combinator (YC) company landscape. This interactive tool provides a clear overview of the industries represented, investment relationships, and growth trajectories of YC-backed companies. Its intuitive design and clear charts offer a unique perspective on the YC ecosystem, revealing connections and trends among startups. This is a valuable resource for entrepreneurs, investors, and anyone interested in the tech industry.

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(yc-map.vercel.app)
Startup Startups

Unprecedented Drop in Teen Drug Use Continues to Surprise Experts

2024-12-20
Unprecedented Drop in Teen Drug Use Continues to Surprise Experts

A new study reveals a continued and unexpected drop in teen drug use in 2024, reaching historic lows. The decline, which began during the COVID-19 pandemic, has not reversed despite the lifting of restrictions. Rates of alcohol, marijuana, and nicotine use among 8th, 10th, and 12th graders have all plummeted. Researchers are now investigating the contributing factors to this unprecedented trend and planning interventions to maintain these low rates.

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(arstechnica.com)
Health teen drug use pandemic impact

Million-Dollar Prize for Open-Source AI Coding Competition

2024-12-16

Andy Konwinski launched the K Prize, a $1 million competition to advance open-source AI coding capabilities. The competition uses a revamped version of the SWE-bench benchmark, eliminating test set contamination for a more accurate assessment of AI models' real-world coding skills. Inspired by the Netflix Prize, Konwinski believes the competition will spur AI research and attract top talent globally.

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(andykonwinski.com)
AI AI competition open-source
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