AI Summarized Hacker News
Front-page articles summarized hourly.
Perfection is unachievable; verifying real systems is an open task and proofs can go wrong. A paper once used ∀z ≠ 0 incorrectly; with locales and explicit premises in Isabelle these errors are avoidable. Proof assistants themselves have soundness bugs (Isabelle/HOL overloading, circular definitions; 2005–2015 issues; HOL88 kernel issues). LCF-style systems remain robust, while PVS historically lacked a proof kernel. Despite bugs, machine proofs are practical: many errors exist in ordinary mathematics, but kernels like Candle prove higher-order logic and its compiled code; dependent type theories complicate kernel design.
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Mapa interativo de SaaS no Brasil, por estado e cidade, criado pela Trapiche, com opção de começar grátis.
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Goblins is Spritely Institute's distributed, transactional programming environment that enables encapsulated objects to live anywhere on the network. It offers a security model, automatic local transactions for synchronous ops, and an efficient asynchronous API, with a network layer that hides protocol details so cross-language objects can interact. It includes distributed debugging tools and a persistence/upgrade model aligned with security. It supports Goblins for Guile and Goblins for Racket, enabling asynchronous programming against objects across languages.
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Baez surveys Western tuning from Pythagorean to equal temperament. He shows how the piano’s 12-tone layout blends 7 white and 5 black notes into a repeating octave. He argues 12-tone equal temperament best approximates the perfect fifth (3/2), while 5- and 7-note scales are natural precursors. He contrasts Pythagorean tuning—with the comma and wolf fifth—to just intonation, which uses a hexagonal grid and a 12-note torus yielding 16 scales and a simple major triad (4:5:6). The syntonic comma, lesser diesis, and diaschisma haunt intervals. Equal temperament dominates, but future tunings remain open.
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Production-grade MCP server bridging Ghidra with AI tools to enable automated, cross-binary analysis. Features 132 endpoints, 110 MCP tools, batch operations, real-time analysis, memory and data-type tooling, cross-binary documentation, and Docker deployment. Architecture: Python MCP bridge (bridge_mcp_ghidra.py), Java Ghidra plugin (GhidraMCP.jar), and 70+ Ghidra scripts; communicates via MCP protocol over stdio/SSE and HTTP REST. Requires Java 21, Maven, Ghidra 12.x, Python 3.8+. Quick start: clone, install deps, mvn package, deploy to Ghidra, start MCP server at http://127.0.0.1:8080. Production metrics: sub-second responses, 93% API-call reduction, atomic transactions. License Apache-2.0.
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Could not summarize article.
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Watercolor brushes span rounds, flats and many specialty types (mops, wash, filberts, rigger, liner, detail, fan, travel; Japanese sumi and hake). They consist of tuft, ferrule and handle; quality comes from hair or fiber type and shaping. Common hairs: kolinsky sable, red sable, squirrel, ox, boar bristle, mongoose, goat, and synthetics. Kolinsky labeling is often misleading; many brands mix hairs. Sizes vary; rounds are numbered, flats by edge width. Brushmaking blends traditional craft with modern manufacture; inexpensive brushes can perform well, but test in store.
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Microsoft has cycled through six widget paradigms since 1997, each killed by a fatal flaw and followed by containment. Active Desktop failed on performance; Vista gadgets failed on screen space; Desktop Gadgets failed on security; Live Tiles failed on engagement; Cortana Cards and News and Interests failed on privacy/disruption. The current Widget Board (2021–present) uses declarative Adaptive Cards and native WinUI 3, is interactive, sandboxed, overlay-based, and opt-in. EU DMA forced changes; by 2026 Lock Screen widgets extend glance-and-go. The cycle informs today's design constraints and potential success.
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Amateur pico balloons offer long-duration stratospheric flights using tiny payloads tracked by the WSPR amateur-radio network instead of satellites. The author builds a Jetpack WSPR Tracker around a $4 Raspberry Pi Pico with a GPS/transmitter daughterboard, powered by small solar panels; a party balloon lifts 12–30 g payloads. Costs stay low (≈$39 for Jetpack boards plus components). To meet FCC rules, antenna traps are added to reduce spurious emissions. Flights varied: one crossed halfway across the Atlantic before going quiet, another failed, a third reached ~12 km over the Mediterranean, with potential orbit.
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Could not summarize article.
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Fox Ellison-Taylor attempts to reimplement Tor in C++ to create a fast, single-hop proxy by directly connecting to an exit node and bypassing multi-hop Tor. He explains why using Tor as a single-hop proxy is blocked and why a custom client could mimic relay-to-exit handshakes. He codes a self-contained, statically linked CLI tool, cites cryptography with mbed TLS, describes certificate exchange, link authentication, and onion routing key exchanges, and outlines starting a relay on a VPS, Tor consensus, and benchmarks showing faster speeds than a hotspot.
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An online petition titled Recognition of Work on Open-Source as Volunteering in Germany asks the German Bundestag's Petition Committee to legally recognize open-source software work as volunteering. Launched 27.11.2025 for Germany, it notes OSS underpins critical digital infrastructure and is even mentioned in the coalition agreement. Most OSS work is unpaid; lack of recognition creates tax and funding gaps, despite public sector reliance and past vulnerabilities. The petition proposes tax-exempt volunteer allowances, potential AO §52 classification, expense reimbursements, and clearer liability. It highlights international examples and urges policy action. Signatures: 8,837 of 30,000; deadline 23.05.2026.
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An introspective piece about missing deep, prolonged thinking in software work. The author splits personality into The Builder (pragmatic, ship fast) and The Thinker (slow, hard problem-solving). From physics days, Thinker thrives on difficult problems; AI and “vibe coding” now satisfy the Builder but dull the Thinker, hindering growth. Attempts to reconnect with physics fail; pragmatic shortcuts offer “good enough” solutions, risking stagnation. The author remains unsure whether both halves can be satisfied by coding, highlighting a tension between creation speed and genuine thought, with a closing quote from Philipp Mainländer.
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Cable Tie Link is selling the world’s largest zip tie: 47 inches long, up to 2,000 pounds. It’s $75 each, with 12-pack for $799.99 or 25-pack for $1,699.99. The piece notes limited practical use beyond oversized or novelty applications, though it’s built for industrial-scale projects.
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Reference Target is a ShadowRoot property that designates an element inside the shadow subtree as the target of any attribute-based reference to the host. For example, a label outside a custom element can label an inner input, or a button can trigger a nested dialog, by setting shadowRoot.referenceTarget (or via a template). This centralizes cross-shadow references, enabling encapsulated components to behave like built-ins. The spec defines resolution rules (unresolved vs resolved targets) and supports single and multi-element references. Chromium leads implementation; WebKit/Firefox prototypes exist. Open questions include cross-shadow targeting, attribute forwarding, and form association. NLNet funded.
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A quick tour of convergence theory and the 'Great Convergence.' The Solow model predicts catch-up, but evidence is mixed; Solow convergence faded, then SS&P claimed a new unconditional convergence around the 1990s–2010s. That era collapsed in the 2010s as poor-country growth slowed, especially in Africa and Latin America, while Asia fared better. The author credits the Chinese commodity boom for the earlier convergence and its collapse for the end, arguing Dutch disease and premature deindustrialization depressed non-resource sectors. He remains skeptical of governance/trade explanations and questions whether the 'Great Convergence' was mainly a commodity shock, not a durable path.
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An indie reverse-engineering project by banteg that resurrects Crimsonland (2003) by decompiling the Windows binary of v1.9.93, then rewriting the game from scratch to exactly match its behavior. Using static (Ghidra, Binary Ninja, IDA) and runtime tools (Windbg, Frida) and GPT-5.2/Codex agents, they rename functions, map vtables, and reproduce every mechanic, textures, and even bugs. Assets live in paq/jaz; fonts identified; engine migrated to raylib to emulate DirectX 8. The result: a playable faithful reimplementation with ~46.8k code, 16k docs, in ~two weeks of work; repo on GitHub; invitation to help.
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French prosecutors raided X’s Paris offices as part of a widening probe into alleged offences including illicit data extraction and possession/distribution of child sexual imagery; Elon Musk and former X chief Linda Yaccarino were summoned to appear in April. In the UK, the ICO opened an investigation into Grok for possible creation of harmful sexualised content, with Ofcom continuing its own inquiry but lacking powers to probe chatbot-generated illegal images at this stage. The EU Commission also opened a separate investigation into X’s parent company xAI over image-generation concerns; Pavel Durov criticised France.
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TikTok System Design describes a distributed microservices stack that ingests, encodes, stores, and delivers billions of short videos with sub-second latency. It combines fast ingestion and moderation, multi-resolution storage with ABR transcoding, and a real-time, ML-driven recommendation feed. Core blocks: API gateway, ingestion, transcoding, CDN, recommendation engine (event collection, feature store, candidate generation, ranking), social graph, live streaming, and analytics. It relies on real-time feedback loops, strong scalability and fault tolerance, security/privacy safeguards, and edge-CDN strategies with future AI/edge innovations.
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Craftplan is an open-source, self-hosted ERP for small artisanal D2C manufacturers. It unifies catalog management, versioned BOMs with cost rollups, inventory with lot traceability, production batching and cost tracking, orders/invoices, purchasing, and CRM, plus allergen/nutrition tracking. It offers demand forecasting, calendar-based scheduling, and API access (JSON:API & GraphQL) with role-based access. Designed for on-premises use with no vendor lock-in, it includes Docker Compose deployment guidance and extensive documentation. Tech stack: Elixir, Ash Framework, Phoenix LiveView, PostgreSQL. License: AGPL-3.0.
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