What algorithm did Windows XP use to choose your initial user picture?

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Windows XP uses a one-pass random selection algorithm to choose the initial profile picture, utilizing RtlRandomEx with GetTickCount() as the seed. This approach is efficient and avoids complications if directory contents change during execution.

Show HN: The same nine streaming subscriptions cost $702/year more than in 2021

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The cost of nine major streaming services increased by 61% from $95.91 to $154.41 per month over the past five years, with each service rising in price at its own pace. The total annual increase is $702, with individual services experiencing varying percentage increases ranging from 23% to 138%.

Stockfish 19

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Stockfish 19 has been released with improved strength and features, offering a stronger play and more accurate analysis. The new release brings an Elo gain of up to 44 points and is available for download at stockfishchess.org/download.

DeepSeek v4.1 Flash

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πŸš€ Introducing DeepSeek-V4.1-Flash: smarter, faster, more efficient. πŸ”Ή Introducing the smallest model in our new architecture family, with native visual understanding. πŸ”Ή Designed for greater capability, faster inference, higher throughput, and scaling to larger models. 1/6

iPhone Duo

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The iPhone Duo offers a spacious display, multitasking capabilities, and compact design. It features essential controls on the side for easy access and comes with various accessories like a 100% fiber-based box for packaging.

Show HN: What if the speed of light was 5 km/h?

User controls a park where the speed of light is 5 km/h, demonstrating relativistic effects like length contraction and time dilation. The user can accelerate, stop, and observe these effects by moving around the park with W A S D keys and mouse.

Hitachi launches CO2 heat pump water heaters with solar-friendly tariff controls

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Hitachi launches Y-series EcoCute CO2 heat pump water heaters in Japan, offering 370L and 460L models with expanded tariff support and HEMS integration. The new range includes a five-year warranty and targets households of 3-6 people.

Object storage is all you need

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Ampbase uses Tigris, a distributed key-value store, as its object storage layer and implements database behaviors such as unique constraints, transactions, indices, and history tables on top of it. The system achieves strong read-after-write consistency through Tigris' global object storage.

Shopify acquires Tailwind

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The Tailwind CSS framework is being joined by Shopify to provide a stable long-term home for its development and maintenance. This partnership will enable the creation of complex applications solving real-world problems, while maintaining open-source licensing and community support.

What do Visa and Mastercard do? An intro to card networks

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Visa and Mastercard are card networks that facilitate transactions between cardholders, issuers, and merchants. They don't issue cards or manage point-of-sale systems, but instead connect these parties to enable secure transactions.

Larger Pacific Striped Octopus

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The Pacific striped octopus, also known as the Harlequin octopus, is a social species that forms groups of up to 40 individuals and exhibits unique mating behaviors. It has been found in tropical waters of the Eastern Pacific and can reproduce multiple times throughout its life.

Thanks to Siri Recaps, your Apple Watch is always listening

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Apple has introduced Siri Recaps, a feature that uses the Apple Watch's sensors to provide a summary of your day, and Live Rewind, which can produce a transcript of the last 15 seconds of audio on your watch face. These features have raised concerns about user privacy due to their always-listening nature.

Growing proof that autonomous cars save lives

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Researchers found that self-driving cars crash significantly less often than human drivers, with evidence showing a 27% reduction in pedestrian crashes and up to 39% fewer property-damage claims. Studies also show that Waymo's robotaxis have given millions of paid rides with a 92% reduction in fatal or serious-injury crashes compared to human drivers.

Show HN: Art – draw one stroke, let symmetry complete it

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Recolour keeps the geometry and re-runs the palette. Inks below are for drawing β€” metallics and gradient inks shift colour as the stroke travels outward.

PlayStation cancels Kojima's PHYSINT, Xbox steps in

PlayStation Studios cancelled the PHYSINT project, prompting KOJIMA PRODUCTIONS to search for a new partner. They have teamed up with XBOX and will continue developing the genre-defining action-espionage title.

No Man's Sky Cosmos

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New features have been added to No Man's Sky, including a star system map, deep-space points of interest, and the ability to mine resources from asteroids. The game also includes new player titles and rewards for accomplishments at these points of interest.

Samsung Debuts zHBM Prototype, Stacking Memory Directly on AI Accelerators

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Samsung Electronics unveiled next-generation 3D memory technologies, including zHBM and zNAND-O, to strengthen its position in the rapidly growing AI market. The company showcased mockups of these technologies at the FMS 2026 conference in California.

Show HN: Persistent Jupyter kernel execution and live output streaming in VSCode

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Tithon keeps Jupyter kernels and outputs alive on the host, surviving disconnections. It stores outputs as files, avoiding JSON bloat and enabling AI agents to use real images.

GPT-6 Astra, looped transformers, and hidden reasoning

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The author discusses OpenAI's GPT-6 Astra model, highlighting its exceptional performance in 3D rendering and animation tasks. The model uses a looped transformer architecture, which allows it to reuse transformer blocks multiple times without adding more weights. This technique improves modeling performance at a fixed compute budget but may not significantly impact the reasoning trace or ...

AirPods 5

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Apple has announced AirPods 5 with improved Active Noise Cancellation and sound quality, starting at $129. The new model features a multiport acoustic architecture and Adaptive EQ for immersive sound.

iPhone 18 Pro and iPhone 18 Pro Max

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Apple has announced iPhone 18 Pro and iPhone 18 Pro Max with improved cameras, battery life, and performance. The new models feature a 48MP Fusion Main camera with variable aperture and AI-powered improvements to cellular quality and reliability.

All grown-ups were once children, but only few of them remember it

All grown-ups were once children, but few remember it. Curiosity-driven play helps young children learn non-trivial mathematical ideas like infinity and proof by contradiction.

Automattic's board forces CEO Matt Mullenweg into leave of absence

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Matt Mullenweg, founder of Automattic, has been placed on paid leave by the company's board after a vote. The move comes amid ongoing lawsuits and controversy surrounding the company's leadership and operations.

I think I hate the internet

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The author finished reading "Careless People" by Sarah Wynn-Williams, a book criticizing Meta and its impact on society. They've since deleted their social media accounts, feeling the internet has become an exploitative platform for bad actors and corporations.

Aardman (Wallace and Gromit) Is Selling Its Original Movie Puppets

Show HN: Compute polynomials twice as fast

Horner's method can evaluate a polynomial in n multiplications, but preprocessing coefficients reduces this to ⌊n/2βŒ‹+1 for monic polynomials and ⌊n/2βŒ‹+2 for general ones.

Desert Ant Labs: local, fast models that run on device

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Desert Ant Labs launches a European frontier AI lab building on-device intelligence models for audio, vision, and text. The first 18 models are live today, offering fast and cost-free inference for various tasks.

Open Source Durable Objects for Postgres

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The author discusses the trade-offs of using Durable Objects, a model that stores state in a database and uses transactions to ensure durability. They weigh the benefits against potential drawbacks like lock-in and high costs, ultimately concluding that Solid Queue is a better alternative with similar functionality.

Qwen 3.8 follows GPT-5.5 Pro reasoning prefills

Training a 3.8B LLM to 0.384 CORE for $998

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A researcher trained a 3.8B-parameter model on ClimbMix for $998, achieving 0.384 on CORE and outperforming GPT-2 by a wide margin in just evenings.