AI Summarized Hacker News
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SpacetimeDB 2.0 lets real-time, multiplayer Three.js apps run game logic inside the database and stream state changes to clients over WebSockets. Developers define tables for world state, reducers for mutations, and views for derived data; clients subscribe to these and receive fine-grained diffs. The DB acts as the authoritative world simulator while the Three.js front end handles rendering and interpolation. Use cases include multiplayer games, collaborative editors, and shared visualizations. Free tier is generous; paid tier around $25/month. Some critique: marketing as a game engine blurs lines; lag masking remains the developer’s job.
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Two days of a calorie-restricted, oat-heavy diet lowered LDL cholesterol by 10% in people with metabolic syndrome, with about 2 kg weight loss and lower blood pressure; the effect persisted for at least six weeks. Oats reshaped the gut microbiome, boosting bacteria that metabolize oats into phenolic compounds (e.g., ferulic acid) linked to improved cholesterol metabolism. In a six-week phase, 80 g/day oats without calorie restriction produced only modest changes, suggesting the combination of oats with caloric restriction drives the benefit. Findings from a randomized controlled trial at the University of Bonn in Nature Communications.
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Samsung’s One UI 8.5 update is removing several Android recovery menu tools on Galaxy phones, including Apply update from ADB, Apply update from SD card, Wipe cache, recovery logs, graphics test, and locale test. Only Reboot system now, Wipe data/factory reset, and Power off remain. The change, detected with February 2026 security updates, may be permanent due to a security policy downgrade block; the reason is unclear. Galaxy S26 Ultra currently still has the full options on the January 2026 patch.
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Paul Lukas investigates Unity Temple’s lettering and a recurring typo: the H in “For the Worship of God and the Service of Man” is inverted on the western entrance. Through archival photos and restoration history, he identifies four eras of lettering (1908–1973; 1973–2010; 2012–2017; 2017–present) caused by gunite work, theft, and restoration. Both entrances share the same motto. The inverted H may have been introduced during any reinstallation, and it’s unclear whether Frank Lloyd Wright himself or others were responsible. The piece is the first of a two-part series.
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Karpathy’s microgpt is a self-contained 200-line Python GPT-like model with no dependencies. It ships a dataset (32,000 names), a simple character tokenizer (27 tokens including BOS), and a from-scratch autograd engine (Value class). The stateless GPT-2–style architecture uses RMSNorm, no biases, ReLU, KV cache, and residual connections. Training uses Adam with linear learning-rate decay on short sequences; inference samples new names with temperature. The article contrasts microgpt’s minimalism with production LLMs (large token sets, tensors, GPUs) and outlines code-progression steps and practical guidance.
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xmloxide is a pure Rust reimplementation of libxml2, aiming to be memory-safe, high-performance, and drop-in for C/C++ with a C header. It replaces the unmaintained libxml2, offering an arena-based DOM, zero unsafe in public API, and no global state. Features include DOM, SAX2, XmlReader, HTML parsing, error recovery, DTD/RelaxNG/XSD validation, XInclude, XML Catalogs, and a xmllint-like CLI. It passes 100% of the W3C XML Conformance Test Suite and outperforms libxml2 in several benchmarks. Fewer capabilities: XML 1.0 only, HTML 4.01, no XSLT/Schematron. MIT license.
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Defense Secretary Pete Hegseth is restructuring the Pentagon’s professional military education, canceling fellowships at elite schools—including Harvard, MIT, Yale, Columbia, Brown, Princeton, Carnegie Mellon, and Johns Hopkins SAIS—for 2026-27 and beyond. He says education must sharpen warfighting capabilities and align with American founding principles, not undermine them. He named potential new partners: Liberty, George Mason, Pepperdine, Tennessee, Michigan, Nebraska, North Carolina, Clemson, Baylor, and others. He has accused Ivy League schools of anti-American sentiments. Some canceled institutions currently partner with the military on AI and space initiatives (e.g., CMU, Johns Hopkins SAIS), complicating the transition.
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The essay argues that while LLMs are powerful, they aren’t fully deterministic, so relying on them for repetitive, policy-driven code risks occasional failures. Drawing from math, where AI-proofs can hallucinate, it suggests using deterministic software tools to enforce standards. In programming, deployments can be automated but aren’t perfectly reliable; deterministic code is preferable. The solution is to encode policies into type systems, linters, tests, and compiler-enforced checks, and have LLMs generate these non-stochastic tools to enforce rules within the build process. Use LLMs to build enforcement tools rather than replace deterministic practice.
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Apple’s App Store page for iPhone/iPad lists the top apps and top games. It highlights AI assistants and popular utilities—Claude, ChatGPT, Google Gemini, Threads, Google Maps, Gmail, WhatsApp, YouTube, TikTok—alongside shopping and finance apps like Temu, SHEIN, Cash App, and Uber. The Top Games section includes Rainbow Six Mobile, Subway Surfers, Roblox, Fortnite, Among Us!, Pokémon GO, Geometry Dash Lite, and Solitaire Clash, among others.
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During a US-Israel attack on Iran, bombs hit across the country, including Shajareh Tayyebeh girls’ school in Minab, where at least 80 children were killed and many others unaccounted for; if confirmed, it would be the deadliest strike of the campaign. Iran’s health ministry called it the "most bitter news." Footage from the site was verified by Factnameh and Reuters. Across Iran, people faced fear and guarded hope for political change as schools closed and civilians stockpiled supplies. The strike followed Trump’s declaration of 'major combat operations' against Iran, amid ongoing protests and repression.
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Cambridge University Library archivist Leontien Talboom fights magnetic decay to preserve data on obsolete floppy disks. Floppies, in many formats, degrade from heat, humidity, and mold, yet some institutions still rely on them for critical updates. Talboom collaborates with retro‑computing enthusiasts to image disks using specialized hardware (Catweasel, Greaseweazle) and recovers material ranging from emails to lectures, including Stephen Hawking’s. As part of the Future Nostalgia project, she published Copy That Floppy!, guiding preservation to prevent a digital dark age.
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Iran's Supreme Leader Ayatollah Ali Khamenei, in power since 1989, was killed in an Israeli airstrike with U.S. support at age 86. The piece notes his ruthless suppression of dissent, consolidation of power with the Revolutionary Guards, and building proxies like Hezbollah and Hamas. He steered Iran's nuclear policy, balancing negotiations (JCPOA) with deep distrust of the U.S. The 2023 Hamas attack and ensuing conflicts precipitated Israeli strikes that crippled Iran's proxies and air defenses, leaving Iran's nuclear program damaged but its ballistic-missile program intact. It remains unclear who will succeed him.
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MinIO is archived and in maintenance mode, but the community can keep it alive. The author forks MinIO to pgsty/minio, restoring the admin console, rebuilding binaries, and restoring CE docs. Commitments: no new features, supply-chain stability, CVE fixes, and production readiness. It highlights AGPL rights to fork, trademark caveats, and AI-assisted maintenance. In short: MinIO as a company project is dead; a community fork can continue open-source development.
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A Vercel security checkpoint prompts the user to enable JavaScript to verify their browser before continuing.
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SmartKNN is a feature-weighted nearest-neighbor algorithm with learned feature importance and adaptive neighbor search. It addresses classic KNN limits with data-driven feature weighting, dimension suppression, automatic preprocessing and normalization, and NaN/Inf handling. Supports regression and classification via a scikit-learn–compatible API, with both brute-force and ANN backends (GPU-accelerated optional). Vectorized NumPy with Numba acceleration. Install via pip install smart-knn; MIT-licensed. Documentation and examples available; v2.x API frozen, actively maintained, benchmarks provided.
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The post explains blocking macOS Tahoe upgrade alerts via a device-management profile that defers major OS updates for 90 days. It highlights the Stop Tahoe Update project and provides steps: clone the repo, make scripts executable, insert two UUIDs into deferral-90days.mobileconfig, optionally set forceDelayedSoftwareUpdates to false to skip minor updates, install the profile with install-profile.sh, then approve it in System Settings. The author even uses a shell alias to reinstall every 90 days. This relies on a macOS 15.7.3 bug; Apple may fix it in the future.
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