AI Summarized Hacker News
Front-page articles summarized hourly.
An introductory PyTorch guide covering tensors, autograd, and a simple neural network. PyTorch is a popular open-source DL framework by Meta AI (now Linux Foundation). Tensors store data and can be initialised in many ways; data types include numbers, words (as IDs), images (shaped tensors) and 3D meshes. Autograd computes derivatives automatically, enabling gradient descent (Adam). The article demonstrates a tabular-model workflow: load and split data, scale features, define a two-hidden-layer NN, train with MSE loss, save the model, and evaluate with MAE and MAPE. It notes feature quality matters and suggests XGBoost for tabular data.
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Wero is a European instant digital wallet that lets you send, receive, and pay directly from your bank account in under 10 seconds, 24/7. Available to customers of participating banks in Belgium, France, and Germany, it uses only a phone number and doesn’t require an IBAN. Activation is through your bank’s app. Wero aims to expand to the Netherlands in 2026 and add in-store payments and subscriptions, with ongoing European expansion and “Made in Europe” branding.
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This post critiques the rise of AI coding agents and the "token anxiety" they generate, likening daily use to playing a slot machine. It argues firms push AI tools to boost productivity, sometimes mandating their use, fueling an "always-on", "996"-style culture. While hype looms, evidence of real productivity gains is lacking and some research suggests AI use harms skill retention. The gambling metaphor implies workers become addicted to work as they chase marginal gains. It warns of ethical erosion and contemplates leaving tech for HVAC; includes reading recommendations.
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Leon Adato argues you should avoid answering salary questions early in interviews. Use a data-backed salary range, emphasize benefits and total compensation, or redirect to job fit before discussing pay. Don't name a number first; if pressed, ask for the range or the data sources. He stresses self-preservation and notes privilege in play. If a job must be taken, keep looking and prepare for future explanations. Core takeaway: answer with as little salary detail as possible until the role and data are clarified.
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Jmail interface for [email protected] greets Jeffrey and shows apps like JPhotos, JDrive, JFlights, and Jemini/Jotify. It enables searching flight records, emails on topics, court documents, and Amazon purchases, with a note that Jemini in Workspace can make mistakes and should be double-checked.
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Robert Duvall, the Oscar-winning actor whose seven-decade career spanned nearly 100 films (including To Kill a Mockingbird, The Godfather Part II, True Grit, Apocalypse Now), has died at 95. His wife, Luciana Duvall, posted on Facebook that he passed away peacefully at home, surrounded by loved ones.
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2D Coulomb Gas Simulator (WebGPU) visualizes N points as electrons repelling each other through a 2D log-gas interaction while confined by an external potential Q. The energy is H = - ∑_{i≠j} log|z_i − z_j| + n ∑ Q(z_j). This model appears across math/physics (random matrices, polynomial zeros, fractional quantum Hall, Hele-Shaw, vortices). The tool minimizes energy to obtain a Fekete configuration, not Boltzmann sampling. It supports various potentials (Ginibre, Mittag-Leffler, Lemniscate, etc.), notes O(n^2) exact repulsion, and offers rendering and interactive insertion of particles with -c log|z−p| added per point.
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The article argues that centralized services threaten privacy because governments can compel a single company to identify or censor users. It advocates using open protocols (IRC, XMPP, ActivityPub, Nostr, Matrix) over services, since no single entity can be pressured across all servers. Even if one provider complies or is shut down, users can migrate; switching services doesn’t solve the core issue. Email (SMTP) shows protocols’ resilience: the system remains usable even if providers fail. Therefore, favor protocols over services to avoid data capture and control by a single company.
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Shutaro Ida, longtime Castlevania and Bloodstained developer, has died at 52 after battling cancer. As Creative Director on Bloodstained: Ritual of the Night and a key Castlevania contributor, he helped shape modern Metroidvania-style action-platformers. Koji Igarashi mourned their 20-year collaboration and his work on Dawn of Sorrow. Ida was working on Bloodstained: The Scarlet Engagement; ArtPlay will continue development in his vision. His death is a major loss to the genre, but his games will endure.
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AT&T Long Lines was the Bell System’s long‑distance network linking regional and independent phones until the 1984 breakup. It replaced vulnerable coax with a microwave relay system, the Skyway, enabling coast‑to‑coast calls (first automated DDD in 1951) and carrying TV signals and military data. Horn antennas and underground base stations, built by Western Electric, with EMP shielding. The rise of fiber optics and satellites, plus antitrust actions, led to the DOJ breakup into the Baby Bells by the early 1990s. Post‑breakup AT&T focused on wireless; many towers remain, repurposed or scrapped.
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An open, intuition-first textbook repo: Maths, CS & AI Compendium by Henry Ndubuaku. It teaches maths, computing, and AI from the ground up for practitioners, not just exams. The README outlines 17 chapters (Vectors to Intersecting Fields) with topics like calculus, ML, NLP, CV, and more; chapters 1–6 are Available, others marked Coming. The project emphasizes real-world intuition, background in AI/ML, and interview prep. Licensed Apache-2.0, and encourages community contributions via issues/PRs. Includes structure and notes on content, goals, and how to use it for learning.
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WebMCP proposes a JavaScript API enabling web apps to expose interactive "tools"—JavaScript functions with natural language descriptions and JSON schemas—that agents can call. Pages act as Model Context Protocol servers, enabling collaborative workflows within the same UI. The API extends Navigator with a read-only modelContext property and adds these methods: provideContext(options), clearContext(), registerTool(tool), unregisterTool(name). Tools are described by ModelContextTool (name, description, inputSchema, execute, annotations) and are registered via ModelContextOptions.tools. ModelContextClient supports agent-initiated user interactions. This non-standard, community-group draft includes security, privacy notes and acknowledgments.
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From a Waikiki balcony, a startup veteran warns AI could upend his career even as it helps his coding. He recalls tech shifts (Luddites, ATMs) that eventually boosted welfare, but now fears a job apocalypse and a ‘permanent underclass’ narrative from AI leaders. He wants policy: trigger-based laws to fund retraining or UBI if unemployment rises while GDP grows. Real downsides include fake content, misinformation, low‑quality output, privacy risks, and rising RAM costs. He uses AI for coding and productivity, but the overall vibes—marketing and consequences—are awful; he urges industry cooperation on disclosure and anti‑misinfo measures.
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Halide announced a public preview of Halide Mark III, a next‑gen camera app that introduces "Looks"—in‑camera film‑stock–inspired processing that shapes capture, not just edits. Default and HDR‑aware options like Process Zero II offer higher contrast, more detail, and the ability to shoot ProRAW and apply Mark III looks in RAW or in Night Mode. A Tone Fusion slider recovers highlights/shadows using non‑AI tech. New film looks include Chroma Noir with halation and HDR support. Final version due by summer; Mark II purchasers get a free upgrade; Cullen Kelly leads color looks development.
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A lightweight local web app (Org-Web-Adapter) that lets you browse and edit Org-mode notes with editing, backlinks, and rendered math. Implemented as a single Python server plus HTML/CSS/JS front end; scans a notes directory for .org files, builds a 3-pane UI, resolves file: and id: links, shows backlinks, supports editing and saving back to disk, and renders MathJax inline math. No authentication; configurable via config.yaml; notes can be symlinked; not a full Org parser; simple rendering; runs on 127.0.0.1:8000.
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