How Delhi cut electricity loss from 50 to 5 percent

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The author recounts a common scene in 2002 Delhi where frequent power outages plagued the city, causing chaos and economic losses. However, over the past quarter century, Delhi's grid has transformed into a reliable system with minimal power losses.

A Privacy Analysis of Web and Mobile Conversational AI Agents [pdf]

Conversational AI services are increasingly adopting advertising-based business models, which raises concerns about user privacy. A systematic analysis of nine prominent conversational AI services found that they expose sensitive information to third-party tracking services, including conversation-derived artifacts such as titles, prompts, and screenshots. These disclosures can be linked to ...

Jeeves. Reasoning improves Jev-like decision models

https://raw.githubusercontent.com/PostHog/jeeves/master/assets/smug.png
A Jeeves model with a Qwen3.5-9B decision model, LoRA, and pointer head outperforms Kev-9B and Jev on test data without thinking, achieving 0.889 accuracy on unseen data. The model can be sped up by truncating chain length or using a drafter to reason before deciding.

Without the Hot Air

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You are no longer invited to dinner

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Americans have seen a significant decline in socializing over the past few decades, with hosting dinner parties and attending community events decreasing by 70% since 1975. This decline is attributed to various factors, including increased busyness due to work and parenting responsibilities, decreased leisure time, and the rise of solo activities like watching TV or exercising.

Walking Men

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Artist Maya Barkai assembled a collection of pedestrian traffic signals from around the world: it's called "Walking Men Worldwide."

Using any C++ library in Godot

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Godot is a free, open-source game engine that allows developers to create 2D and 3D games using GDScript or C++. It can load native code through GDExtension and godot-cpp bindings.

Why Doesn't Anyone Want to Fix One of America's Scariest Roads?

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The Million Dollar Highway in southwestern Colorado is a treacherous two-lane road carved into red-quartzite cliffs, with no shoulder and a speed limit of 25mph. The highway has been the site of numerous accidents and fatalities due to rockfalls, avalanches, and reckless driving.

Digital Audio on the ZX Spectrum's 1-Bit Beeper

The author successfully implemented a 1-bit digital audio system on the ZX Spectrum, producing high-quality digital audio. The technique uses a loop that turns the speaker on and off with variable-length delays to create a precise timing constraint.

Google ending ChromeOS support two years early

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Google reduced support for Chromebooks from 10 years to 8 years, affecting devices purchased today. The company plans to transition users to Googlebook OS with new licenses required.

macOS Golden Gate Is a Buggy Mess

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The author reviews macOS 27 Golden Gate, finding numerous bugs and issues with its performance, stability, and user experience. Despite Apple's promise of a more responsive and delightful experience, the reviewer encounters alignment problems, broken third-party apps, and other usability issues.

Phyllotaxis: An audio-reactive LED display

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The author created a cellular LED matrix inspired by phyllotaxis, a pattern found in nature, and programmed it to react dynamically to sound using an STM32 board. The project evolved into an interactive installation at Recurse Center, featuring a website for attendees to upload sketches and games.

1 in 8 cancer cases worldwide are caused by infections, study finds

Researchers found that 1 in 8 cancers worldwide are caused by infections, with Helicobacter pylori and human papillomavirus being the top two causes. The study highlights vast regional differences in cancer risk factors, with high-income countries doing better than lower- and medium-resourced countries.

Show HN: Jevstiller – Distill Jev into a local model, with a disagreement bound

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The Jevstiller system uses a threshold-based approach to classify text with a local model, ensuring agreement with the teacher (Jev) within a 2% budget. The system's accuracy against the datasets' own labels stays within a point of Jev's across various tasks and confidence levels.

Booted up in 1993, this server still runs – but not for much longer (2017)

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A 1993 Stratus server, still operational after 24 years, has been maintained by Phil Hogan at Great Lakes Works in Michigan. The server will be retired in April after a planned upgrade, marking the end of its nearly three-decade run.

Show HN: Raven – The harness of harnesses, built for RSI

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Raven is a harness of harnesses that generates DAGs and orchestrates multiple specialized agents for complex tasks, enabling recursive self-improvement. It brings together built-in and third-party agents to carry out complex tasks with its modular architecture supporting iterative improvement.

500k facial scans at UK stations yield no arrests, 1 false positive

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A 6-month trial of live facial recognition in London's railway stations cost £320,000 and led to only one incorrect alert. The technology aimed to catch offenders but failed to make any arrests during the trial period.

California farmers are struggling to sell grapes as demand for wine drops

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California wine growers are struggling to sell their grapes due to declining demand, forcing some to tear out vineyards that have been in their families for generations. The industry is facing significant losses as prices paid for grapes drop and many growers are left with unsold crops.

The systems that no one will test

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The author found a vulnerability in a system during the pandemic, allowing access to Brazilian federal records of 200+ million people. This experience has led them to worry about the growing capabilities of AI models and their potential for misuse by nation-states.

Georeferencing Chernarus and visiting in real life (2021)

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A shell script stitches Chernarus map tiles into a high-res image. QGIS georeferences it to real-world coordinates, then GDAL converts it to a Garmin-compatible KMZ file for GPS use.

Claude partial outage

Claude's Status Page - Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API.

Software occlusion culling in Block Game

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The author developed a software-rendered occlusion culling solution for their game Block Game, which runs on a weak GPU. The solution uses depth buffers and frustum culling to reduce the number of chunks that need to be rendered, resulting in significant performance improvements.

Pirating the Pirates

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The author and his roommate hacked together a restored version of Sergio Leone's The Good, the Bad and the Ugly after MGM altered it for profit. They collaborated with other preservationists to create an official release that closely matched their work.

The Beatles have permeated research papers across academic disciplines

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Four CHI '26 papers I wish I wrote

The author reflects on four CHI 2026 papers that sparked their interest, exploring potential research directions and collaborations. They consider how these papers might have been written by them if they had pursued similar ideas earlier in their career. The author now seeks to proceed with next steps discussed above or engage in slower reading and journaling to gain further insight into what ...

Optimizing x264 settings and per-title ladders

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The article discusses optimizing H.264 video encoding to save bandwidth costs and deliver a higher quality experience to viewers. Optimizing x264 boosts VMAF by 0.66 points while reducing bandwidth from 4.9 Mbps to 3.27 Mbps, or 33%.

Tank Body Problem

↑↓ Elevate │ ←→ Power │ A/D Move │ J/L Weapon │ SPACE Fire │ SPACE AGAIN = Laser/Plumage │ Cheese bounces 3x │ Poison drops bubbles │ Moon gravity

MicroLLM Lab – Try 7 tiny LLM's in the browser

The model is evaluated based on objective checks, not writing quality. The 135M model's performance is measured by speed and accuracy metrics from runs in the browser.

ESP32S3 cluster running 1.58-bit (BitNet) Language model

https://raw.githubusercontent.com/Low-Zi-Hong/ESP32s3-LLM-Cluster/main/docs/images/Picture.JPG
This project runs a sliced 0.5B LLM across a cluster of 7 ESP32s3. One act as master and others are node. The master node runs the tokenizer and embeding and the other attention layer and MLP ran on the nodes. The master and node communicate through high speed SPI Daisy-Chain. This project is licensed under the MIT License - see the LICENSE file for details.

Startup Nights 2026 is comming up on 5-6 Nov. in Switzerland

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The Startup Nights 2026 event connects entrepreneurs, investors, and industry leaders for networking opportunities and insightful talks. Attendees can pitch their ideas, showcase solutions, or learn from successful founders in a space designed to spark meaningful conversations.