source&pool
A daily wire of long-form journalism, video, and discourse — filed, tagged, and laid out flat.
VOL. I·NO. 01
FRIDAY, SEPTEMBER 18, 2026
Hacker News3674X 主题热门3517CNBC69MacRumors629to5Mac56YahooFinance52Kotaku42Verge35IGN34aihot309to5Google28NintendoLife28Gematsu27BusinessInsider25Eurogamer24TechCrunch23Engadget18Polygon16NBC15Guardian15Fortune14SeekingAlpha14USAToday14Wccftech14NPR13PushSquare13bgr12CNET12Gizmodo11Mashable11FoxBusiness10Fox9Notebookcheck9ABC8AppleInsider8CBS8GameInformer8Investor'sBusinessDaily8TechPowerUp8ArsTechnica7VideoGamesChronicle7WindowsCentral7WIRED7BleepingComputer6CNN6CoinDesk6XBOXWire6PureXbox6Variety6AndroidAuthority5GSMArena5NintendoEverything5NewYorkPost5CrudeOilPricesToday5PetaPixel5SamMobile5DigitalFoundry4GameRant4Lifehacker4Motor14Pokemon4SlashGear4Register4VideoCardz4Yahoo4AlJazeera3AndroidPolice3CTech3ChromeUnboxed3GamesIndustry.biz3Jalopnik3LosAngelesTimes3Blizzard3RockPaperShotgun3RPGSite3SouthChinaMorningPost3SeattleTimes3Space3Conversation3TweakTown3WarhammerCommunity3WindowsLatest3404Media280Level2Aftermath2AndroidCentral2AOL2AwfulAnnouncing2BleedingCool2BloodyDisgusting2BuzzFeed2CanonRumors2CyberSecurityNews2Deadline2DualShockers2DW2EventHubs2MotleyFool2FratelloWatches2GameDeveloper2GearPatrol2Hodinkee2MassivelyOverpowered2Maxroll2MP1st2MyNintendo2Nature2Newser2PCWorld2PokémonGOHub2RoadtoVR2SFGATE2Hacker2Intercept2UploadVR2YourTango2ABC111AboveLaw1BusinessInsiderAfrica1ageofempires1AVClub1Benzinga1BikeRadar1Billboard1Borderlands1Boston1Bungie1Yahoo!FinanceCanada1Chron1CineD1comicbook1CreativeBloq1Cyclingnews1DailyDownforce1DailyKos1Defector1DenverPost1DigitalCameraWorld1Draftsim1DroidLife1CNN1empireonline1Euronews1Fangoria1flatpanelshd1FOX191DetroitFreePress1FrequentMiler1Futurism1GAMINGbible1AAAGasPrices1GeekWire1GeekyGadgets1Hackaday1HollywoodReporter1Independent1InsiderGaming1InterestingEngineering1KITCO1KSL1Lloyd'sList1Macworld1Magic:Gathering1Mediaite1Mercury1MonochromeWatches1MorningBrew1MortgageDaily1Newsweek1NYT1OregonLive1PageSix1PaulKrugman1PCMag1politico.eu1PittsburghPost-Gazette1QuantaMagazine1qz1RockstarINTEL1SammyGuru1CultureMapSanAntonio1ScienceAlert1ScientificAmerican1Semafor1YahooSingapore1SportsIllustrated1SimpleFlying1Slate1supercarblondie1YahooTech1Tedium1TelecomTalk1TheGamer1NextWeb1TimeExtension1LongmontTimes-Call1TmoNews1TwistedVoxel1YahooFinanceUK1UnHerd1VisualCapitalist1WOWT1WRAL1WSB-TV1YGOrganization1ZDNET1
  1. 001Hacker NewsSEP · 18English

    Show HN: A Mac native app that helps you reason through math/CS pdf textbooks

    A Mac native app designed to help users study math and computer science textbooks by annotating at the sentence and word level, with features for organizing notes across different sections and integrating Excalidraw diagrams for visual explanations.

    By alricsiu
  2. 002Hacker NewsSEP · 18English

    Make an educated guess on Fermi-style trivia questions

    Fermi Unlimited is a free browser-based estimation game where players make educated guesses about real-world quantities like tree populations or Olympic pool volumes. Players survive questions by guessing within 10 times the correct answer, with their score being the number of consecutive correct guesses, and all answers are sourced from published figures.

    By emmanator3000
  3. 003Hacker NewsSEP · 18English

    Show HN: Free Tournament Bracket Maker and Generator

    SnapBracket is a free web-based tournament bracket maker that lets users paste a team list, run single-elimination tournaments with live winner updates, and export results as PNG without requiring login or account setup.

    By littlelight
  4. 004Hacker NewsSEP · 17English

    Why I Built my own Language App

    An AI engineer built a personalized language learning app to learn Spanish more effectively than existing platforms like Duolingo and Babbel. The app features personalized stories, podcasts, live tutoring, and vocabulary review—all tailored to the user's current knowledge level using comprehensible input principles and AI-generated content.

    By Maxime peabody
  5. 005Hacker NewsSEP · 17English

    Periodic Table 2027 for iOS 27

    Periodic Table 2027 is an iOS educational app featuring 3D visualization and augmented reality to explore chemical elements interactively. Users can examine elements from multiple angles, access detailed properties like atomic mass and boiling point, and receive chemistry tutoring through an integrated AI assistant.

    By devath
  6. 006Hacker NewsSEP · 17English

    Globally, More People Expect AI to Cause Job Loss Than Growth

    A Pew Research Center survey across 37 countries finds that majorities in 34 nations believe AI will reduce jobs rather than create them, with concerns especially high in wealthy countries like the U.S., Australia, and South Korea. Young adults, women, and highly educated respondents express greater concern about job losses, while many people remain uncertain about AI's economic impact. Additionally, people are more likely to expect AI will increase wealth inequality between rich and poor.

    By Laura Silver; Richard Wike; Moira Fagan; Jordan Lippert
  7. 007Hacker NewsSEP · 17English

    Poor Economics: Banerjee and Duflo on Schooling in Developing Countries

    MIT economists Banerjee and Duflo argue in Poor Economics that development should focus on tested small improvements rather than big-picture questions. They examine education in developing countries, noting that government schooling has failed to deliver quality education to the poor, yet argue public schooling should remain central despite evidence that private schooling outperforms it.

    By James Tooley
  8. 008Hacker NewsSEP · 17English

    Tutor-MCP – An adaptive learning engine for any subject

    Tutor-MCP is an open-source adaptive learning engine built on the Model Context Protocol that creates personalized learning paths and AI tutoring for any subject. It uses Bayesian Knowledge Tracing and spaced repetition to guide learners through structured curricula, track progress across AI clients, and maintain persistent learning history.

    By ArnaudGuiovanna
  9. 009Hacker NewsSEP · 17English

    I didn't sign the Fields medallists' letter

    Timothy Gowers, a Fields medalist, explains why he declined to sign a letter by 25 Fields medallists regarding a mathematical crisis. He agrees with concerns about the field but offers a different analysis, and clarifies his independence from OpenAI despite having access to their models.

    By Terence Tao
  10. 010Hacker NewsSEP · 17English

    Show HN: Ear Training Exercise

    A developer shares Pitch Recognition, a free web-based ear training tool designed to help users learn to identify musical pitches by name. The platform offers six free demos without signup and additional exercises for registered users, including relative ear training exercises.

    By AlexFromClarena
  11. 011Hacker NewsSEP · 17English

    Show HN: I built a Mac app to make technical PDF textbooks easier to study

    Margin is a macOS app designed to help students study technical PDF textbooks more effectively. It lets users add notes and explanations directly beside text, organize related notes into scratchpads by topic, and revisit their work through an interactive book map. The app saves locally without requiring subscriptions or accounts, works offline, and supports PDFs up to 2,000 pages on Apple silicon Macs running Sonoma or later.

    By Stephen Boyd; Lieven Vandenberghe
  12. 012Hacker NewsSEP · 17English

    Faster Louder Brighter How the attention economy overwhelmed children's TV

    Children's media has increasingly adopted rapid pacing, loud sounds, and bright visuals that overwhelm young viewers' ability to process meaning and develop emotional understanding. While content quality matters, the accelerated tempo—driven by attention economy principles—prevents children from taking time to follow stories, grasp concepts, or recognize social repair, potentially undermining their development of empathy and sustained attention.

    By Natalia Kucirkova
  13. 013Hacker NewsSEP · 17English

    Distributed System Illustrated

    Distributed System Illustrated is an educational series using diagrams and intuitive explanations to teach core distributed systems concepts, including replication, consistency, data partitioning, consensus algorithms, and logical clocks. A complete PDF e-book version is available on Leanpub for offline reference.

    By xiaohanyu
  14. 014Hacker NewsSEP · 17English

    Pangram – AI detector for text and images

    Pangram is an AI detection tool that identifies AI-generated text and images with 99.7% accuracy across 26 language models, using natural language processing and trained datasets. Founded by researchers from Tesla and Google, it's trusted by universities and enterprises globally, offering features like plagiarism detection, multilingual support across 20+ languages, and the ability to detect humanized AI content.

    By doodlesdev
  15. 015Hacker NewsSEP · 16English

    Perhaps I Got Lucky Never Learning Math

    A self-taught scientist reflects on how unconventional homeschooling and avoidance of formal mathematics education shaped their career. Despite lacking traditional academic foundations, they developed problem-solving skills through self-directed learning and eventually pursued science through community college, though they struggled with pre-calculus.

    By colingauvin
  16. 016Hacker NewsSEP · 16English

    Alongside: A learning partner that turns any webpage into an editable whiteboard

    Alongside is a learning tool that creates an editable whiteboard alongside any webpage, using AI to draw explanations for YouTube lectures, GitHub pull requests, or custom topics. Built with Strands Agents SDK and Excalidraw, it runs as a Chrome extension with backend infrastructure on AWS, supporting saved lessons and follow-up questions.

    By SinghCoder
  17. 017Hacker NewsSEP · 16English

    Show HN: Remind Cards – an offline-first flashcard app with AI generation

    Remind Cards is an offline-first flashcard app with AI-generated content, spaced repetition learning, and multiple study modes. Built as a side project, it supports vocabulary learning through various input methods including handwritten notes, with features like text-to-speech, custom decks, and community sharing.

    By tekfen
  18. 018Hacker NewsSEP · 16English

    The Association for Human Mathematics (AHM)

    The Association for Human Mathematics (AHM) is an organization dedicated to protecting mathematics as a human discipline against threats posed by artificial intelligence. The group argues that AI tools undermine mathematical understanding and scientific practice, and calls for coordinated action by mathematicians to address disruptions in education, publishing, and the field's independence from corporate interests.

    By YeGoblynQueenne
  19. 019Hacker NewsSEP · 16English

    Student suspended for bringing coffee to class in act of 'civil disobedience'

    A high school senior in Upstate New York was suspended for bringing coffee to class, which she characterized as civil disobedience to protest a new food and drink policy. The student discovered the district had failed to hold a required public hearing before adopting the code of conduct, prompting the district to acknowledge the procedural error and schedule a retroactive hearing.

    By Amanda Hurley
  20. 020Hacker NewsSEP · 16English

    Show HN: An open-source Socratic coach for competitive programming

    Socratic Algo Coach is an open-source Chrome extension that helps competitive programmers learn through guided questioning rather than direct answers. It integrates with platforms like Codeforces and LeetCode, uses OpenAI's API for tutoring, and stores user data locally without backend servers or analytics.

    By boriskurikhin