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.

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.

DeepSeek V4 Flash 0731 Intelligence, Performance and Price Analysis

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

A GTK4 SSH-askpass in Zig

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Every ssh-askpass in the Gentoo tree pulls in X11 or a full KDE stack, so I wrote my own with Zig 0.16 and GTK4, with hand-written bindings that keep X out of the build. I run hardened Gentoo on my laptop, and most of the time I never touch ssh-askpass because I’m using -sk keys for most of the systems. There is one class of situation where I do need it, though, which is when a program wants ...

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 ...

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 ...

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 ...

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.

The Maxwell Conjecture Is False (GPT 5.6 Sol)

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Researchers found a configuration of 5 point charges with at least 24 non-degenerate critical points, disproving Maxwell's conjecture. Maxwell's conjecture stated that n point charges have at most (n-1)^2 non-degenerate critical points.

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.

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.

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.

JEP 401: Value Objects (Preview) merged to OpenJDK master

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User is trying to apply a suggestion to a GitHub conversation but is encountering various errors such as no code changes, deleted lines, and pull request queue. The suggestion cannot be applied at this time due to these restrictions.

Moonshot built on 20k Nvidia chip cluster from Alibaba

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Anti-fraud tools can't keep pace with scammers exploiting cheap internet calling

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WASHINGTON, July 29, 2026 — The tools to fight phishing, robocalls and spam have multiplied over the past decade, but the criminals behind them keep adapting faster than any single defense can keep up, industry experts said Wednesday during a Broadband Breakfast Live Online panel. Panelists said that there were no simple answers to the knot of problems. Authentication frameworks, traceback ...

Better to Beg Forgiveness

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The author discusses copyright limitations and exceptions, including fair use, first sale, and di minimis, which allow for uses of copyrighted works without permission. The author argues that Creative Commons licenses can simplify permission for certain uses but also contribute to a culture of asking permission for everything.

I flagged two research papers for fake authors and both were accepted as orals

The End of an Era

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The author discusses the impact of AI on the writing industry, predicting a future where AI-generated books will coexist with human-written ones, and readers will have varying opinions on the authenticity of books. The author advises aspiring and established writers to focus on writing for the love of it, rather than seeking external validation, and believes that the personal connection ...

Gemini Robotics 2 brings whole body intelligence to robots

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Gemini Robotics 2 is a major advance in robotics, enabling intelligent whole-body control, advanced dexterity, and multi-robot collaboration. It unlocks a broad range of tasks, from cleaning up a cluttered room to complex workflows, and can run locally on-device while adapting to new robotic bodies.

Detect Dark Matter's Mark from Your Backyard

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The author built a homemade radio telescope to detect dark matter by measuring the speed of interstellar hydrogen clouds orbiting the Milky Way's center. The results showed that orbital velocities do not decrease with distance, suggesting the presence of dark matter.

Premier league bans gambling sponsors

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The Premier League's front-of-shirt gambling sponsorship ban took effect for the 2026-27 season, eliminating betting companies from jerseys and shifting the commercial landscape. Finance and other sectors now dominate, with three clubs (Sunderland, Nottingham Forest, and Chelsea) without a front-of-shirt sponsor.

The mean means nothing: data visualization to debug a latency problem

The user encountered a frustrating situation where performance improvements in benchmarks did not translate to live-production dashboards due to noisy data, but leveraging a cumulative distribution function (CDF) helped visualize the data and reveal the story behind it. By using various visualizations, including CDFs, ridgelines, and jointplots, the user was able to understand the complex ...

We shall dwell amidst wonder and glory for ever: On weird fiction

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Weird fiction is a fictional mode that combines elements of horror, science fiction, and fantasy, often involving a sense of wrongness and dread. It emerged from the Gothic and was influenced by writers such as Edgar Allan Poe and H.P. Lovecraft.

The Religion of Speed

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The pursuit of speed has become a moral position, where moving fast is seen as proof of seriousness, but real speed requires understanding, clear constraints, and well-made decisions. Slowing down means refusing to skip the part where work becomes legible, asking boring questions that ensure progress, not just motion.

The fragile foundations of CoT monitoring

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Last week, I attended a workshop on Chain of Thought (i.e., reasoning chain) monitorability. Many of the most influential researchers and “members of technical staff” working on this topic were present. I felt lucky to be there, since pretty much everything I know about CoT monitoring I learned from Peter Hase. I have, however, worked extensively on interpretability, and there seems to be a ...

Read this before you buy that TV streaming stick

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Security experts warn that generic TV boxes secretly rent users' Internet connections and participate in ad fraud networks. These devices, often marketed as streaming devices, also install residential proxy software that rents users' addresses to anonymous customers.

Where USB Memory Sticks are Born (2013)

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The author visited a factory that manufactured USB memory sticks and received a raw chip-on-flex to take home. The factory uses manual die placement and automated wirebonding to assemble the sticks, which are then overmolded with epoxy.

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

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A federal judge on Thursday denied a request by more than two dozen Democratic states to halt a Trump administration policy announced last month that would require Medicaid recipients with terminal diseases to prove they are too sick to work in order to be exempt from new work requirements that go into effect this coming January. While introducing over $1 trillion in tax cuts for the ...