Elevators

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Elevators use complex algorithms like SCAN and LOOK to optimize traffic flow. The best algorithm varies depending on building size and traffic patterns, with simpler algorithms sometimes outperforming more advanced ones.

US Government lists fictional nation Wakanda as trade partner

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The US Department of Agriculture listed fictional country Wakanda as a free-trade partner by accident during a staff test. The listing included goods such as ducks, donkeys, and dairy cows, and was removed after media queries.

Is AI Reasoning Right for the Wrong Reasons?

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Researchers are debating whether large reasoning models (LRMs) truly reason or just mimic human-like responses through "wishful mnemonics," a mix of shorthand and suspended disbelief. The actual processes driving LRM performance remain unclear, with some arguing that the models' outputs are more a result of clever training and data manipulation than genuine reasoning.

Dubious research tied to Red Bull has shaped energy drink policy

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Red Bull funded research that found mixing energy drinks and alcohol is safe, but independent studies show it increases risks of binge drinking, injury, and death. The company's influence on research and policy has led to a lack of regulation on energy drinks, despite warnings from health authorities and experts about the dangers of combining them with alcohol.

DeepSeek V4 Flash 0731 Intelligence, Performance and Price Analysis

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A GTK4 SSH-askpass in Zig

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The user created a custom ssh-askpass tool called ssh-askpass-zigtk using Zig 0.16 and GTK4 to avoid X11 dependencies. The tool can be used by setting the SSH_ASKPASS environment variable to the path of the binary, allowing OpenSSH to prompt for SSH key passphrases in situations where a terminal is not available.

Show HN: Shared memory graph for Claude and ChatGPT, over MCP

https://uml.gpmai.workers.dev/assets/uml-icon.png?v=2
UML is one private memory graph shared by Claude, your agents, and your apps — you can see it, edit it, and own it. Free early access · Open source · You own your memory · Works with API, SDK, dashboard, and MCP-linked clients. Tell your AI: "save this to uml — I finished Unit 3." Or let your app send it automatically. AI extracts the durable facts. The backend verifies them and ...

Puberty blockers trial can start recruiting children

https://ichef.bbci.co.uk/news/480/cpsprodpb/fbb7/live/f8ea21f0-c6fb-11f0-a863-434ee92aa5e3.jpg.webp
A high-profile clinical trial of drugs that can delay puberty in children questioning their gender can go ahead after the High Court rejected a legal challenge by campaigners. The Pathways trial, run by researchers at King's College London (KCL), will start recruiting more than 220 children aged between 11 and 16 years old from 1 August. The study was commissioned to assess the benefits ...

The session you cannot take with you

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Inference APIs are moving away from a simple, user-controlled model where sessions can be inspected, archived, and replayed, instead returning a mixture of text and provider-bound state that is non-portable. The authors propose a set of rules for inference providers and agent builders to adopt, including making local event logs canonical, storing data explicitly, and providing readable ...

Google fixed more Chrome bugs in June than over the past two years, thanks to AI

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The Chrome Security team is using Large Language Models (LLMs) to automate vulnerability discovery and fix hundreds of security bugs faster than ever, aiming for greater resilience and comprehensive remediation. By combining AI-powered vulnerability detection with traditional security testing and mitigation strategies, Chrome is driving towards a browser that is continuously protected without ...

Big Food vs. the People

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Bad diets kill millions of people globally every year, and lead to tens of billions of dollars in health costs, often placing the heaviest burden on communities who are least able to afford it. Children, with limited decision-making power, are particularly vulnerable to this. Legislators and government officials have worked to rein in this public health crisis by enacting laws that require ...

Arch Linux disables AUR package adoption

Arch Linux DevOps team has disabled adoption of orphaned packages in AUR due to malicious package adoptions and malware attacks. The team had previously suspended new account registration in June and reopened it on July 13 with minor restrictions, including email verification via a 24-hour token.

U.S. debt-to-GDP ratio reaches 123%

Algorithms on billion-scale graph using 10GB RAM: I love DataFusion

https://semyonsinchenko.github.io/ssinchenko/images/Internet_map_1024.jpg
I implemented a graph map-reduce using Apache DataFusion. Where possible, I offloaded everything to disk, and designed the algorithms to rely on bulk scans rather than random access. DataFusion handles spillover, sort-merge joins, aggregations, planning and execution, so my code is very lightweight. I tested it in strict mode by running it via systemd-run with a hard memory limit. It works. ...

Tasklet (YC P26) Is Hiring a Customer Success Engineer

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Tasklet is hiring a customer-facing owner to handle support, automate workflows, and improve internal tooling. The ideal candidate is a tech-savvy, charismatic communicator with 1-5 years of experience in a high-agency role.

New Defcon Badges Pack a Unique Open-Source Chip That Doubles as a Security Key

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Defcon's conference badges this year feature an innovative open source chip called the Baochip-1x designed by Andrew "bunnie" Huang, which aims to advance security, transparency, and trustworthiness in computing. The chip can be removed from the badge and used as a hardware security token, and its design allows for inspection and verification of its internal structures, making it a more ...

Admin: Terminally Ill Patients Aren't Exempt from Medicaid Work Requirements

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A federal judge denied a request to halt a Trump administration policy requiring Medicaid recipients with terminal diseases to prove they're too sick to work. The policy, set to take effect in January, has been criticized by medical associations and Democratic attorneys general as potentially harming vulnerable people.

The Art of Decision-Making (2019)

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In July of 1838, Charles Darwin was twenty-nine years old and single. Two years earlier, he had returned from his voyage aboard H.M.S. Beagle with the observations that would eventually form the basis of “On the Origin of Species.” In the meantime, he faced a more pressing analytical problem. Darwin was considering proposing to his cousin Emma Wedgwood, but he worried that marriage and ...

The C ``Clockwise/Spiral Rule''

[This was posted to comp.lang.c by its author, David Anderson, on 1994-05-06.] There is a technique known as the ``Clockwise/Spiral Rule'' which enables any C programmer to parse in their head any C declaration! Starting with the unknown element, move in a spiral/clockwise direction; when ecountering the following elements replace them with the corresponding english statements: ...

Winding Down Artichoke Ruby

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The author archived Artichoke, a Ruby implementation in Rust, after six years of development, citing a shift in focus and joy. The project pushed the author's learning and growth, and its code and architecture remain public for study and reference.

Make Everything to Markdown

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PDF, Foto, Scan, Word oder Excel hochladen — heraus kommt sauberes Markdown zum Weiterverwenden. Kein Abtippen mehr. # Preisliste 2026 | Artikelnummer | Bezeichnung | Preis | |---------------|------------------|--------| | A-1001 | Kupferrohr 15 mm | 8,40 € | | B-2010 | Dämmschale 20 mm | 4,95 € | Alle Preise zzgl. MwSt. Rechnungen, Verträge, Handbücher. Überschriften, Absätze und Tabellen ...

13 Models and 4 Agents on SWE Tasks: Go, Java, Python, Rust, TS

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Added new models to the leaderboad: GLM 5.2, DeepSeek-V4 Pro, DeepSeek-V4 Flash, MiMo V2.5 Pro, Qwen3.6-35B-A3B, Qwen3.6-27B and Gemma 4 31B. Added new models to the leaderboad: gpt-5.5-2026-04-23-xhigh, gpt-5.5-2026-04-23-medium, gpt-5.4-2026-03-05-medium, Claude Opus 4.7, and Kimi K2.6. Added new models to the leaderboad: GLM-5.1, Qwen3.5-27B, Cursor, Gemma 4 31B and MiniMax M2.7. Added new ...

Where .env Went Wrong

It starts as a shortcut for three export commands. Then it becomes the project’s configuration schema, secret store, environment model, onboarding guide, CI interface, and deployment format. Environment variables do one job well: deliver strings to a process. .env turned that delivery mechanism into a source of truth. Environment variables solve a small problem: getting values into a running ...

I built a f.lux alternative because the M5 Max firmware broke existing solutions

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Drift eases your Mac's display into a warmer, calmer light as the day winds down. Fully compatible with M5 Max Firmware.

Show HN: BitBang – Reach machines behind NAT from a browser, no account

https://raw.githubusercontent.com/richlegrand/bitbang-cli/main/assets/demo.webp
BitBang CLI is a single static binary remote-access multitool: open an interactive shell, browse and transfer files, and access web apps on the remote machine's network from any browser, no port forwarding, no configuring, and no account. serve prints a URL. Open it in any browser and you get a terminal, a file browser, and a proxy to that machine's network -- or connect from another ...

Show HN: Gander, an Android file viewer that asks for no permissions at all

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Gander is a tiny, open source Android app that opens various file types offline without permissions or ads. It offers features like search, share, and locate, with automatic updates available through Obtainium.

Stacked PRs are now live on GitHub

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Stacked pull requests break large changes into small, reviewable pieces, allowing independent review and merge of each layer. They're built into GitHub, working with existing reviews, checks, and merge requirements.

Online Friends Are Real Friends

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A few days ago I booked my flights to not only attend a professional event, but also visit and stay with one of my best friends next month. This will be the sixth time that at least one of us has traveled to hang out with the other. We met each other online six years ago via Reddit (and to some degree, Instagram back when I still had an account) simply through shared interests. Never in my ...

DeepSeek-V4-Flash Update

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The DeepSeek-V4-Flash API is now in public beta with enhanced agent capabilities and benchmark results exceeding V4-Pro-Preview. It supports Responses API format and is adapted for Codex, with unchanged API calling method.

I 4x'd a 367x479 stamp-sized photo through 8 upscaling models

https://enlarger.app/uploads/blog/upscayl-vs-enlarger/upscayl-vs-enlarger-hero.jpg
Part of “Proof Series”, where I will be comparing Enlarger to other alternatives. More to follow! If you have a tool or model suggestion, shoot me a message. Most AI upscaler landing pages show gorgeous before/after comparisons that are honestly marketing fluff. On the left there’s usually a tiny, pixelated image, and on the right one that feels almost like magic: details and textures kept, ...