AI Summarized Hacker News
Front-page articles summarized hourly.
Researchers at CSIRO have built the first working quantum battery prototype, which charges faster as it gets larger thanks to quantum effects like 'superabsorption' in an optical microcavity. Their device, which operates at room temperature, can charge in femtoseconds and store energy only for nanoseconds, but in March 2026 they demonstrated extraction of an electrical current. While quantum batteries could power quantum devices or, someday, phones or EVs, experts caution the technology is still fragile, with scalability and controllable energy retrieval as major hurdles. Some believe superconducting designs may become practical, others doubt widespread use outside quantum scale.
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In the GUSTO birth cohort, screen time from age 1 to 8 was linked to later cognition. After adjustment, each extra hour/day at age 1, 1.5, and 6 years predicted lower academic scores at age 9 (β: −1.47, −0.95, −0.88) and weaker working memory at age 10.5 (β: −1.12, −1.01). Cumulative average screen time over childhood related to poorer academic performance, but not working memory. Early infancy exposure showed the strongest single-age associations.
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Some US restaurants are banning tips and instead raising menu prices to fund higher staff wages. Proponents say it reduces reliance on tips and promotes pay fairness. Examples: La Cigale in San Francisco pays higher wages and does not accept tips; Nightshade Noodle Bar in Lynn, MA switched to tip-free, raising tasting menus to about $102–$126 to support kitchen staff. Results vary: Talulla in Cambridge reverted to tipping. Critics warn higher prices can depress demand and complicate revenue; supporters cite better staff retention. Tipping fatigue persists, but tipping is unlikely to disappear soon.
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Could not summarize article.
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SiFive’s BigSky SF-2U870 is a 2U development server for RVA23. It has 32 P870-D cores at ~2.2 GHz, 256 GB DDR5-5600, 64 PCIe 5.0 lanes (plus 4 PCIe 3.0), support for up to 450W double-wide GPUs, 10/25 GbE NIC, 960 GB SATA OS SSD, and 3.84 TB U.2 NVMe data storage. RVA23 enables RVV and Ubuntu 26.04 out of the box. In comparisons, it offers higher clocks and PCIe bandwidth than some x86 peers but fewer SMT features and core density than Ampere Altra. The piece calls it a boring but functional dev platform that fills RVA23 silicon gaps.
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Ambient Context is a macOS menu-bar app that records what you work on by reading text from the focused window (via the accessibility API) and appending it to a daily plain-markdown file in a folder you choose. It runs entirely locally: no screenshots, no network calls, no telemetry, redacts credentials, and stores data on disk. You can point an LLM at the folder to recall or summarize your day. Requires macOS 14+ on Apple Silicon. Build from source or run in dev mode; grant Accessibility permission and select a save folder. Early and unsigned; no notarised download yet.
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Rupert Lowe, leader of Restore Britain, is set to earn as much from X posts as from his MP salary. Since the 2024 election, his income on X has topped £105,000, with hourly rates rising from £932 this year to £1,476 since June. If the trend continues, 2026 earnings could exceed his £98,599 MP salary. Critics say X’s revenue-sharing incentivises divisive, far-right content; Musk has amplified Lowe’s posts. Lowe donates his net MP salary to charities in his constituency.
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Adi2 is a modern Ada GUI library using CSS-style styling, declarative XML UIs, and SDL3 to render widgets (SVG/Lottie), with i18n, live CSS reload, and single-binary deployment. It can render HTML views, be built from XML/CSS or hand-written Ada, and targets WebAssembly. The MCP bridge enables driving running UIs from AI tools; it is cross‑platform (Windows, macOS, Linux, Web) and production‑use, still evolving. Licensed Apache-2.0, with documentation on architecture, styling, XML UI, deployment, and contributions.
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walgit is a Rust-based git server that uses a write-ahead log in an S3/GCS bucket as the single source of truth, with no on-disk repository state and no central database. It serves git refs and objects via smart HTTP, bundles, and LFS, plus a web UI and API. Repositories live in the bucket; servers cache locally and fetch from the bucket. Deployment is a single binary with a walgit.toml config; multiple hosts can share the same bucket. Per-repo policies, token or OIDC auth, and continuous replication are supported. The project includes architecture docs and an install script.
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Emacs 31.1 is a QoL-focused release with no single blockbuster feature. It drops the unexec dumper, improves startup and GC, and expands Tree-sitter with automatic grammar installation and multi-language support. It adds many UI/UX tweaks: new window/layout commands, better completion/navigation, margins and frames, and terminal/TTY enhancements; a new User Lisp directory with recursive byte-compilation; broader package and project tooling (Project, VC, Dired, Eshell, etc.); and numerous minor mode, face, and accessibility updates across modes and platforms.
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OX Alpha is a stealthy LLM spotted on OpenRouter, claimed to be GLM by Z.ai. The piece probes its identity via prompt-injection, reconstructing the system prompt and even counting words. It also applies a gzip-NCD, kNN attribution across 14 prompts vs five models (GPT-5.5, Claude Opus 5, Gemini variants, GLM-5.3). Ox-alpha’s outputs most closely match GLM-5.3 (7/14 at several k), with Claude Opus 5 a close second, highlighting prompt-security risks and model-attribution methods.
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Nostr is an open, ownerless protocol for decentralized social networking built on cryptographically signed notes published to relays. Clients (smart user agents) connect to many relays, which distribute but cannot alter content; trust is cryptographic, not centralized. Users control their outbox relays and can switch as needed. It supports varied data types and apps; relays define moderation; search is local/indexed per relay; discovery happens by following and seeing interactions. Nostr aims to avoid single points of control, contrasting with Mastodon and Bluesky, and envisions a scalable, community-run ecosystem—still under active development.
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This post surveys making QR codes as art. QR codes can embed logos and images without breaking scanability thanks to Reed-Solomon error correction, but aesthetics trade off with data capacity and reliability. It explains QR structure (finder patterns, quiet zone, version, format info, and why top tolerances matter) and why scanners are picky. It then surveys creative techniques: image overlays, halftone, dot-based rendering, padding-based tricks, animation (with care), and non-image designs, plus practical testing on real devices. Tools and examples (qrframe, fuqr, QArt Codes, QRbtf) show how to design stylish yet legible codes.
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Headlong is an open-source Bash-based agent microharness for persistent agency. It runs a continuous thinking loop so a single agent (Audel) maintains a unified stream of thoughts across all conversations (Slack, Telegram, mobile) and decides when to respond or pursue self-generated projects. The core is under 10K lines of Bash, using shellm (a recursive language model) plus a DAG-based trajectory memory and built-in skills (mem, traj). It supports multi-user interaction, sandboxed execution, and self-diagnosing fixes, with costs around $1–$2/hour. Install with a one-line curl command.
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Thomson Reuters announced Thomson, its first in-house proprietary frontier model. Trained from a strong open-source baseline with about $40 million, it is fully owned and operated by Thomson Reuters, with deployment costs far lower than typical frontier models. Built on decades of proprietary content (Westlaw, Practical Law, Checkpoint, Reuters) and guided by hundreds of experts, Thomson aims for Fiduciary-Grade AI with domain-specific accuracy and data privacy. Initial rollout in CoCounsel Legal Tabular Analysis; will expand across legal and tax with sovereign AI options. A small open-weight version will be released on Hugging Face for research.
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Universities should stop teaching 'entrepreneurship' and instead cultivate a founder-friendly culture by strengthening students’ building habits through core STEM and design education. YC argues successful founders are defined by their ability to build valuable products, not majors; ideas can come from any field when people are good at building. To prepare founders, universities should: (1) make starting a startup seem feasible, (2) encourage students to work on personal projects that yield prototypes and teams. Show approachable founders; avoid business-plan competitions and formal entrepreneurship centers; the path costs little and builds a startup culture by freeing time for side projects.
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GitSkills analyzes agent skills (SKILL.md) on GitHub, totaling ~3.8M skills across 282k repos. In early 2026 non-English skills rose from 13.0% (Q1) to 16.3% (Q2), but English remains dominant at 85.3% of 1.87M distinct skill contents. Growth is driven by Chinese and European languages; Japanese/Korean rise is modest. The increase reflects data artefacts and global development patterns, with India’s English use masking growth by language alone. Non-English skills are revised more often and copied less. Limitations include language-id accuracy and survivorship bias. Future work: focus on programming languages.
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Bookshelf is a self-hosted ebook library that runs on object storage—Cloudflare R2 via a Worker or a Node server over a directory. No database. It serves EPUB/PDF in the browser with readers; covers rendered with cwebp/pdftoppm. It can run via Docker or directly with Node 24+. A sync/publish tool uploads the library to storage; a demo shelf of public-domain titles is provided. Public instances are read-only and unauthenticated. Two deployment modes: Cloudflare R2 + Worker or filesystem provider. Commands: npm install, npm run sync/build/deploy, npm start, docker-compose. MIT license.
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An illustrated tour of the Moon’s motion and its effects, from basic gravity to the complex Earth–Moon–Sun dynamics. Through interactive demos, the piece explains how gravity causes orbits and how the barycenter governs two-body motion; it then details the Moon–Earth system: orbital period, inclinations, nodal and apsidal precession, axial tilts, and librations that reveal ~59% of the lunar surface. It covers tides, Earth's slowing rotation, the Moon’s recession, solar and lunar eclipses, and the Moon’s surface features and brightness (phase angle, shadow hiding, coherent backscattering).
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