AI Summarized Hacker News
Front-page articles summarized hourly.
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An overview of how lunar remote sensing evolved from Lunar Orbiter photos to Apollo-era mapping. Early Apollo images supported land classification but needed correction for large-scale mapping. The Apollo Transforming Printer used optical remapping to remove distortions from the panoramic camera, enabling rectified lunar images and orthomaps (e.g., 1:250,000 around Tsiolskovski crater). The work by the Apollo Orbital Science Photographic Team and Frederick Doyle Papers shows how these techniques laid groundwork for later Landsat/Skylab Earth mapping.
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Dododo Land is a temporary Tokyo exhibit at Seibu Shibuya celebrating everyday annoyances with an interactive mini‑museum. Tickets cost 2,400 yen (plus optional Play Passes). Mascots Punda the angry panda and Ussa the angry rabbit guide visitors through sections like Minor Things I Cannot Forgive, a Crappy Fortune board, a blood‑type zone, the Merry-Go‑Round of Filth, and the Zoo of Angry People, plus displays of irritating texting. Attendees can vent via games such as FAFO Toss, Beat You Up, and Flying Crappy Reply. The exhibit, running Nov 16, 2025–Feb 25, 2026, aims to find humor in anger.
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Synthcart is an Atari 2600 cartridge that turns the console into a standalone synthesizer with an arpeggiator, built-in beats, and two simultaneous sound types. It works without a TV, uses two controllers, and is sold via Atariage. It runs on all 2600s and on the 7800 (with a B&W switch mod). NTSC and PAL supported; SECAM limited. Beats are hardcoded (33) due to 128 bytes RAM, so no easy sequencing. Sound comes from the TIA; audio can be wired out. The source is open for hacking; MIDI kits exist but are discontinued.
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An engineer experiments with Stable Diffusion locally and, after boosting batch size, his PC emits a bizarre loud beep. He rules out coil whine, overheating, and other hardware faults, but can't locate the source until his cat Ollie knocks the surge protector. The beeping turns out to be the UPS warning about overdraws from Stable Diffusion's load. He upgrades to a bigger battery UPS and the setup runs fine. Takeaway: check power supply and UPS capacity; even a cat can be a debugging ally.
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Skip the Tips is a free browser game that challenges players to click "No Tip" while dark patterns—guilt-trip modals, fake loading screens, rigged sliders—try to coax tipping. A satirical take on modern tipping culture, it features more than 30 patterns inspired by real checkout screens, growing difficulty, and a shrinking timer. No downloads or sign-ups required.
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Memoir about the author's grandmother, a federal agent, and the lessons learned from digitizing hundreds of hours of childhood footage.
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Ring has canceled its planned integration with Flock Safety after intense backlash over surveillance concerns and a controversial Super Bowl ad. The partnership would have allowed Ring owners’ video to be shared with Flock’s law-enforcement network, but it never launched and no customer videos were sent. Ring said the integration would have required more time and resources and reaffirmed its commitment to responsible data use. The controversy surrounding Ring’s ties to police and new features like Familiar Faces persists, with Axon remaining a partner and Community Requests continuing.
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AWS SDK for Go v2 release 2026-02-12 updates the EC2 module to v1.288.0, introducing nested virtualization to run nested virtual machines on non-bare-metal EC2 instances.
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macOS 26.3 RC claimed to fix the window-resizing issue in Tahoe. A pixel-by-pixel test showed the resize areas now follow the corner radius rather than square regions, improving accuracy, but the vertical/horizontal resize thickness shrank from 7 to 6 px overall (inner‑frame portion from 3 to 2 px), making misses more likely. In the final macOS 26 release, the fix was removed and regions returned to squares; release notes changed from 'Resolved Issue' to 'Known Issue'.
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Uncertainty-aware STDP (iuSTDP) uses timing intervals instead of exact spike times. When pre/post intervals are disjoint, learning proceeds (LTP/LTD). When overlapping, learning is uncertain; two modes: conservative (learn only on certain events) or probabilistic (learn with confidence-scaled updates). A plasticity governor computes confidence c from P = Phi(mu/sigma) where mu and sigma come from interval midpoints and widths, and gates per-neuron plasticity g. This four-factor rule combines timing evidence, confidence, eligibility traces, and reward to stabilize networks under noisy timing. Simulations show governor reduces weight churn vs vanilla.
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Herbert Lui argues that anxiety-inducing decisions should be evaluated by the worst realistic outcome and whether you can recover from it. If you can’t, make the decision more recoverable (pre-orders, extra income, selling unused items) or reduce the severity of irrecoverable loss. A haircut is a relatable example of a recoverable change. Many so-called irreversible decisions are actually recoverable. Bias for action grows when decisions are recoverable, and entrepreneurship rests on making more decisions recoverable. Credit to Bernice Liu.
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Discord starts mandatory age verification, ending anonymous gaming chats; users flee to Matrix, but Matrix.org will also comply with laws and explore privacy-preserving verification. However Matrix’s federated model lets users run own homeserver on Raspberry Pi or VPS abroad, bypassing ID requirements. Trade-offs include rough UX and lack of features like seamless game streaming and voice channels. If you stay on Discord, expect surveillance; otherwise consider self-hosting a Matrix server.
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Three cache layers sit between a SELECT and disk: Postgres shared_buffers, the OS page cache, and the disk. Memory sizing trades off between shared_buffers and the page cache. A Postgres page is 8KB; data hits disk at CHECKPOINT. work_mem affects on-disk spills. In a heavy MVCC workload, two queries using an index on account_id plus JSONB filters caused thousands of reads and ~2k IOPS for zero results. Root cause: missing JSONB-friendly index (GIN or partial) and MVCC row scattering. In managed environments you often can’t see hardware, so indexing choices matter most.
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Lichess announces Op1, a partial 8-piece tablebase covering endings with at least one opposing pawn pair (white and black pawns opposing on the same file). In collaboration with Marc Bourzutschky, about 63 TiB of data is publicly accessible: downloadable tables, a tablebase API for developers, and integrated support on the analysis board and mobile app. Op1 adds to the 7-piece Syzygy coverage and accounts for roughly half of 8-piece endgames in practice. Generated by retrograde analysis, it uses Depth to Conversion (DTC) rather than DTZ50. Future work includes 7-piece DTC, op2 (9-piece) tables, and a standalone frontend.
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Techdirt reports that ICE and CBP used NEC's Mobile Fortify facial recognition app to identify migrants and others, but rushed deployment without Privacy Impact Assessments (PIAs) or AI impact assessments as required. DHS claimed the tool could verify identities, but it cannot reliably do so. The app has been used on targeted individuals, protesters, observers, and even U.S. citizens, despite lacking proper oversight. The rollout dismantled centralized privacy reviews; critics warn it enables unlawful surveillance and retribution. The pattern reflects 'deploy first, regulate later' under the Trump era.
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Cities rely on distinctive retail, but value created by shops leaks to landowners, risking vacancies and weaker public goods. The piece outlines fixes: unified ownership with anchor tenants; transit-plus-property models; cross-subsidization via mixed-use developments; zoning reforms to enable larger land assemblies; hyperlocal taxes or bonds via homeowners’ associations or BIDs to fund streets and amenities; localized planning to realize spillovers; and private–public 'commons' spaces as third places. If retail shifts online, these value-capture institutions could sustain vibrant streets and nearby homes.
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Anthropic raised $30B in a Series G, valuing it at $380B post-money. Led by GIC and Coatue, with co-leads D.E. Shaw Ventures, Dragoneer, Founders Fund, ICONIQ and MGX; investors include Accel, Temasek, Sequoia, BlackRock, Goldman Sachs, and others, plus ongoing Microsoft and NVIDIA commitments. Funds will accelerate enterprise-grade AI products and infrastructure. Run-rate revenue is about $14B, up ~10x annually for three years; >$1M annualized spend customers exceed 500; eight of the Fortune 10 are Claude customers. Claude Code (May 2025) >$2.5B run-rate; Cowork; Opus 4.6; Claude on AWS, Google Cloud, and Azure; trained on Trainium, TPUs, GPUs.
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Disc refers to optical media (CD, DVD) that is removable and can be read-only, write-once, or rewritable (CD-R, DVD-R, CD-RW, DVD-RW, DVD-RAM). Disks refer to magnetic media (hard drives, floppy) that are usually sealed inside a case, are rewritable, and can be partitioned; external disks may be removable. Both are pronounced the same.
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