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Reliving a Childhood Dream: Restoring an IBM PS/1 2168

2025-09-12

In 1993, a 14-year-old's passion for computers led him to dream of owning an IBM PS/1 2168. Years later, he embarks on a journey to acquire and restore a well-preserved used model. The article chronicles the restoration process, detailing the selection of parts, system installation, troubleshooting, and upgrades. It highlights the machine's unique design and excellent performance, including its iconic Model M keyboard and remarkable expandability. This isn't just a computer restoration; it's a nostalgic trip down memory lane.

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(fabiensanglard.net)
Hardware

RSDS: A Decentralized Syndication Protocol to Fix the Internet's Missing Piece?

2025-01-11
RSDS: A Decentralized Syndication Protocol to Fix the Internet's Missing Piece?

Author Tautvilas Mečinskas proposes a new protocol called RSDS (Really Simple Decentralized Syndication) to address the challenges of content discovery and aggregation on the internet. The article reviews the rise and fall of RSS and the shortcomings of attempts like Bluesky, highlighting how RSDS uses lightweight data structures, decentralized domain name IDs, and Bitcoin blockchain-based timestamps to significantly reduce costs and complexity. It also features spam prevention, support for content licensing, and enables the creation of truly decentralized social networks. The core of RSDS lies in its low barrier to entry—everyone can host content—while also allowing for the development of commercial applications.

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(tautvilas.medium.com)
Tech social network

From Multi-Head to Latent Attention: A Deep Dive into Attention Mechanisms

2025-08-30
From Multi-Head to Latent Attention: A Deep Dive into Attention Mechanisms

This article explores the evolution of attention mechanisms in natural language processing, from the initial Multi-Head Attention (MHA) to more advanced variants like Multi-Latent Head Attention (MHLA). MHA weighs important words in context by calculating query, key, and value vectors; however, its computational and memory complexity grows quadratically with sequence length. To address this, newer approaches like MHLA emerged, improving computational speed and scalability without sacrificing performance – for example, by using KV caching to reduce redundant calculations. The article clearly explains the core concepts, advantages, and limitations of these mechanisms and their applications in models like BERT, RoBERTa, and Deepseek.

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(vinithavn.medium.com)
AI

Inigo Quilez's Computer Graphics Tutorial Goldmine

2025-05-22

Inigo Quilez, a veteran computer graphics expert, has been dedicated to learning and sharing his knowledge since 1994. His website offers a vast collection of computer graphics tutorials covering topics ranging from SDFs and ray marching to fractals and mathematical techniques. Tutorials feature concise code snippets and clear explanations, catering to various skill levels. He also provides video tutorials and other resources, and his code is MIT-licensed for easy reuse.

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(iquilezles.org)
Development SDFs

A $45 Rohde & Schwarz AMIQ: Teardown and Circuit Analysis

2025-06-11

The author acquired a Rohde & Schwarz AMIQ I/Q modulation generator for a mere $45 at an auction. This device, lacking a user interface beyond a power button and three LEDs, presented a significant restoration challenge. The article delves into the AMIQ's functionality, teardown, and internal circuitry, focusing on the analog sections. Key areas explored include the reference clock generation, DAC clock synthesizer, I/Q output skew tuning, variable gain amplifier, and internal diagnostics. The author provides detailed analysis of components like the AD9850 and praises the AMIQ's comprehensive schematics, using images and diagrams to aid explanation.

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(tomverbeure.github.io)
Hardware

Hacking Tesla's New TCU: Installing a Local SIM Card

2025-05-12

Tesla's newer models (Model 3 Highland, Model Y Juniper, and Cybertruck) have relocated their cellular modem to a separate Telematics Control Unit (TCU). This guide details how to access and replace the SIM card in the TCU, activating it using Tesla Toolbox and Service+ mode to achieve 4G/5G connectivity. It covers TCU location, SIM installation, using a VPN for region restrictions, and waking the car with an external SIM.

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(olegkutkov.me)
Hardware SIM card

US Judicial Independence Under Siege

2025-03-11

Chief Justice John Roberts' 2024 year-end report on the federal judiciary expresses concern over declining trust in the courts' independence. The report highlights violence, intimidation, disinformation, and threats to defy court orders as undermining judicial independence. These threats aim to coerce judges into ruling against the law. Roberts draws parallels to historical events, emphasizing the importance of judicial independence for upholding the rule of law and the system of checks and balances. While the President claims to abide by court decisions, the threat of defiance remains, potentially leading to a constitutional crisis and eroding public trust.

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(www.lawfaremedia.org)
Misc constitutional crisis US politics

Pre-Modern Peasant Marriage Patterns: A Cross-Cultural Perspective

2025-08-04
Pre-Modern Peasant Marriage Patterns: A Cross-Cultural Perspective

This article explores marriage patterns among pre-modern peasant populations, highlighting that while high mortality rates led to diverse household structures, marriage was a universal and strictly enforced social norm. Three marriage patterns are analyzed: an early pattern (average female age at first marriage around 16, e.g., ancient Greece), an intermediate pattern (average female age at first marriage around 20, e.g., Rome), and a late pattern (average female age at first marriage around 25, e.g., early modern Western Europe). These patterns are closely linked to women's social status, fertility control strategies, and household structures. The late pattern is particularly unique, associated with high percentages of never-married individuals and newly married couples forming independent households. The article emphasizes the significant differences between elite and commoner marriage patterns and notes that marriage in these societies wasn't an expression of individual affection but a necessary component of fulfilling social roles.

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(acoup.blog)
Misc pre-modern peasants

Unreal Tournament's Sniper Rifle: A Balancing Act Between Physics and Gameplay

2025-03-22
Unreal Tournament's Sniper Rifle: A Balancing Act Between Physics and Gameplay

This article delves into the physics model of the sniper rifle in the classic game Unreal Tournament. While the game uses a 'hitscan' mechanic, ignoring real-world factors like bullet travel time and drop, this simplified model generally provides a smooth gameplay experience. However, on the iconic map 'Facing Worlds', the unrealism of this simplification becomes more noticeable. The article compares different games' approaches to projectile physics, explaining the trade-offs between realism and gameplay in game design, ultimately concluding with the philosophy, "All models are wrong, but some models are useful."

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(militaryrealism.blog)
Game Unreal Tournament

GE's Fall From Grace: A Shakespearean Tragedy of Corporate America

2025-05-26
GE's Fall From Grace: A Shakespearean Tragedy of Corporate America

William Cohan's "Power Failure" recounts the epic rise and fall of General Electric (GE). From Edison's illumination of the world to Jeff Immelt's desperate final days, GE's story is a Shakespearean tragedy of corporate culture and American capitalism. Over-reliance on financialization, aggressive accounting practices, and a blind worship of 'making the numbers' ultimately plunged this once-mighty American giant into ruin. Cohan's book serves not only as GE's history but also as a cautionary tale for today's tech giants: excessive complexity, over-powerful CEOs, and an over-reliance on financial engineering can all lead to disastrous consequences.

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(www.gwintrob.com)
Startup corporate governance

Shenzhen's Miracle: Planned Transformation vs. American Urban Stagnation

2025-04-04
Shenzhen's Miracle: Planned Transformation vs. American Urban Stagnation

Shenzhen's transformation from a fishing village to a global tech hub is a testament to China's reform and opening-up policy and its bold urban planning. The article contrasts Shenzhen with American cities, arguing that stringent US regulations hinder large-scale urban renewal, resulting in less modernized cityscapes despite the presence of leading tech companies. The author suggests that America's overly restrictive approach to urban change has missed opportunities for economic transformation similar to Shenzhen's, subtly linking this conservative planning ideology to the previously discussed misguided trade protectionism, ultimately harming overall economic interests.

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(www.slowboring.com)
Tech China-US comparison

GitHub CEO Steps Down, Embracing the AI Revolution

2025-08-11
GitHub CEO Steps Down, Embracing the AI Revolution

GitHub CEO Thomas Dohmke announced his departure to return to the startup world. Over the past decade, he oversaw GitHub's remarkable growth, including its acquisition, the launch of Copilot, and its leadership in the AI developer tools space. He'll remain until the end of 2025 to ensure a smooth transition, expressing strong confidence in GitHub's future under Microsoft's CoreAI organization and highlighting Copilot's transformative impact on software development, empowering developers globally.

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(github.blog)
Tech

Mozilla Kills Off Multiple AI and Privacy Tools, Focusing on Core Firefox

2025-06-10
Mozilla Kills Off Multiple AI and Privacy Tools, Focusing on Core Firefox

Mozilla has announced the shutdown of its Pocket, Fakespot, and Deepfake Detector services, with its Orbit AI tool ceasing operation on June 26th. These closures reflect Mozilla's strategic shift to streamline its operations and concentrate resources on its core Firefox browser. The demise of Orbit, a privacy-focused AI tool capable of summarizing articles and answering questions without sharing user data, represents a significant loss for users. Mozilla cites limited resources and the need to enhance Firefox's competitiveness as the rationale behind these cuts.

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(www.neowin.net)
Tech

GeneticBoids: A Visualized Genetic Algorithm Simulating Flocking Behavior

2025-05-23

GeneticBoids is a fascinating project that simulates flocking behavior using a genetic algorithm. Users can customize various parameters such as the number of boids, movement speed, perception range, and genetic signaling, observing the dynamic changes in the flock under different combinations. The project offers various presets, including calm, chaotic, and swarm modes, and allows users to manually intervene, such as randomizing all parameters or clearing the boids. Overall, GeneticBoids, with its fine-grained parameter control and intuitive visualization, provides an excellent tool for studying swarm intelligence and genetic algorithms.

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(attentionmech.github.io)
AI genetic algorithm swarm intelligence

Relive the 80s: Epson MX-80 Font Pack Released

2025-08-21

Michael Walden has recreated the fonts from the iconic Epson MX-80 dot matrix printer, popular in the 1980s. Manually transcribing the font data, he's expanded the character set to include Windows-1252 characters and offers the fonts in various formats (.fon, .ttf, .otf, .woff, .woff2). Perfect for retro printing simulations or displaying program listings on web pages and in documentation.

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(mw.rat.bz)
Design retro font

Airborne DNA: Revolutionizing Wildlife Tracking and Disease Surveillance

2025-06-19
Airborne DNA: Revolutionizing Wildlife Tracking and Disease Surveillance

A groundbreaking study reveals the potential of environmental DNA (eDNA) extracted from air to track a vast range of species, from elusive bobcats to illicit drugs and even human pathogens. Researchers at the University of Florida developed a novel method using air filters to collect eDNA, successfully identifying hundreds of different pathogens, allergens, and wildlife species. This rapid and efficient technology promises to revolutionize disease surveillance, wildlife conservation, and environmental research, while also raising crucial ethical considerations regarding sensitive human genetic data.

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(www.sciencedaily.com)
Tech genetic sequencing disease surveillance

Cheap PV Modules Upend Solar Array Landscape?

2025-05-03
Cheap PV Modules Upend Solar Array Landscape?

As PV module prices continue to fall, simple fixed East-West arrays are now cheaper and faster to install than the industry-standard single-axis tracked arrays. While single-axis trackers still significantly outperform East-West arrays in energy production per panel, their higher cost makes them less competitive in some regions, especially when facing extreme weather like hail. East-West arrays offer lower material and labor costs, less land usage, and increasing economic benefits as PV module prices decline. However, single-axis trackers retain an advantage in areas prone to hail due to their superior resilience. The optimal choice depends on location, weather conditions, and the balance between cost and risk.

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(terraformindustries.wordpress.com)
Tech photovoltaic

Alaska Airlines Grounded by Massive IT Outage

2025-07-22
Alaska Airlines Grounded by Massive IT Outage

Alaska Airlines and its subsidiary Horizon Air experienced a complete system-wide grounding on Sunday night due to a major IT outage. The fifth-largest airline in the U.S. was forced to request a ground stop from the FAA, impacting all flights. While operations resumed early Monday morning, significant delays continued throughout the day. Passengers reported extensive delays and hours stuck on planes on social media. The incident occurred nearly a year after the massive CrowdStrike software failure, leading to speculation about a possible connection.

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(gizmodo.com)
Tech airline IT outage system-wide grounding

Critical: Local Privilege Escalation Vulnerabilities Found in Linux

2025-06-23
Critical: Local Privilege Escalation Vulnerabilities Found in Linux

Two newly discovered local privilege escalation (LPE) vulnerabilities allow attackers to gain root privileges on systems running major Linux distributions. The first flaw (CVE-2025-6018) resides in the PAM framework configuration on openSUSE Leap 15 and SUSE Linux Enterprise 15, granting local attackers 'allow_active' user privileges. The second (CVE-2025-6019), found in libblockdev, allows an 'allow_active' user to gain root via the udisks daemon. Qualys TRU has developed proof-of-concept exploits, successfully achieving root on Ubuntu, Debian, Fedora, and openSUSE Leap 15. Immediate patching is crucial.

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(www.bleepingcomputer.com)
Development Linux vulnerability local privilege escalation

Intel's Lion Cove: A Deep Dive into Gaming Performance

2025-07-07
Intel's Lion Cove: A Deep Dive into Gaming Performance

Intel's latest high-performance CPU architecture, Lion Cove, excels in SPEC CPU2017 benchmarks and even rivals AMD's Zen 5. However, gaming workloads differ significantly from productivity tasks. This article provides a deep dive into Lion Cove's gaming performance, analyzing detailed data on cache hierarchy, instruction execution latency, branch prediction, and more. It reveals Lion Cove's strengths and weaknesses in gaming scenarios and compares it to Zen 4. Results show a strong frontend but bottleneck in backend memory latency, leaving room for improvement in gaming performance.

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(chipsandcheese.com)
Hardware

Open-Source AI Model DeepSeek R1 Challenges OpenAI: Efficiency Wins

2025-01-29
Open-Source AI Model DeepSeek R1 Challenges OpenAI: Efficiency Wins

Chinese AI lab DeepSeek open-sourced its reasoning model R1, which performs comparably to OpenAI's o1 but was trained at a fraction of the cost on inferior hardware. DeepSeek's decision to open-source wasn't about sacrificing profit, but rather about overcoming geopolitical hurdles to enter Western markets and leverage its efficient training methods. The article analyzes the growing trend of open-source models and their advantages in infrastructure, arguing that open-source models are eroding the market share of giants like OpenAI. However, OpenAI maintains its competitive edge thanks to its first-mover advantage and vast resources.

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(www.getlago.com)
AI

Sci-Fi Author Ted Chiang on AI and the Future of Tech

2025-02-02
Sci-Fi Author Ted Chiang on AI and the Future of Tech

This interview with science fiction master Ted Chiang explores his creative inspiration, his critical perspective on AI, and his concerns about the future direction of technology. Chiang argues that current AI, especially large language models, are more like low-resolution images of the internet, lacking reliability and true understanding. He emphasizes the relationship between humans and tools, and the human tendency to see ourselves in our tools. The interview also touches on the nature of language, the role of AI in artistic creation, and ethical considerations in technological development. Chiang's optimism about technology is cautious; he believes we need to be mindful of potential negative impacts and work to mitigate their harm.

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(lareviewofbooks.org)
AI

Mistral's New OCR Model Underwhelms; Google Gemini 2.0 Takes the Lead

2025-03-11
Mistral's New OCR Model Underwhelms; Google Gemini 2.0 Takes the Lead

Recent tests reveal that Mistral's newly released OCR-specific model underperforms its promotional claims. Developers Willis and Doria highlight issues with handling complex layouts and handwriting, including repeated city names, numerical errors, and hallucinations. In contrast, Google's Gemini 2.0 Flash Pro Experimental excels, processing complex PDFs that stump Mistral, including those with handwritten content. Its large context window is a key advantage. While promising, LLM-powered OCR suffers from issues like fabricating information, misinterpreting instructions, and general data misinterpretation.

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(arstechnica.com)
AI

Animal-Methods Bias: A Roadblock to Scientific Progress?

2025-03-25
Animal-Methods Bias: A Roadblock to Scientific Progress?

A recent study reveals a widespread "animal-methods bias" in life sciences: researchers often prefer animal models despite the availability of potentially better non-animal methods. This bias stems from pressure from peer reviewers and funding agencies, forcing researchers to use animals even when their contribution is minimal. However, the tide is turning. More NGOs and institutions are funding research into non-animal methods, like organ-on-a-chip technology, which better mimic human physiology, thus boosting drug development efficiency and reducing animal use. While still nascent, these alternative methods, with increasing funding and technological maturity, promise to revolutionize biomedical research.

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(www.nature.com)
Tech animal testing alternative methods

German Court Holds RWE Liable for Climate Change Impacts

2025-05-30
German Court Holds RWE Liable for Climate Change Impacts

A landmark German court ruling holds RWE AG partially liable for climate change impacts. The case, brought by Peruvian resident Saúl Luciano Lliuya, argued that RWE's emissions exacerbated flood risks in Huaraz, Peru. While Lliuya's individual claim was dismissed, the court affirmed that RWE's emissions interfered with rights and property in other countries, establishing legal liability under German civil law. This precedent-setting decision could reshape climate litigation globally, signaling a new era of corporate accountability for climate-related harms, even though the damages claim failed.

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(cri.org)
Tech

The Semantic Apocalypse: AI Art and the Loss of Wonder

2025-04-01
The Semantic Apocalypse: AI Art and the Loss of Wonder

This essay explores the impact of AI-generated art on the meaning of art, using the example of ultramarine, a pigment once incredibly difficult and expensive to produce. The author argues that the ease of AI art creation diminishes the sense of wonder and uniqueness associated with traditional art, leading to hedonic adaptation. This isn't unique to AI, but a recurring pattern throughout history as technology makes previously rare experiences commonplace. The solution proposed isn't technological, but personal: cultivating a childlike wonder and actively engaging with the world to overcome the desensitization caused by readily available abundance.

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(www.astralcodexten.com)
AI hedonic adaptation semantic apocalypse

YC Startup Harper Seeks Founding Operations Lead to Revolutionize Insurance with AI

2025-01-12
YC Startup Harper Seeks Founding Operations Lead to Revolutionize Insurance with AI

Harper, a Y Combinator-backed AI-native commercial insurance brokerage, is searching for a Founding Operations Lead. They aim to revolutionize the $100B+ E&S insurance market using AI, aiming to reduce two-week processes to hours. The role requires a strong operator and architect, capable of running current processes while building future systems and excelling in AI integration. Candidates should be adept at building complex systems rapidly, problem-solving, iterating quickly, and thriving in high-velocity environments. Compensation ranges from $75,000 to $150,000, plus competitive equity.

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(www.ycombinator.com)
Startup Operations

AI-Powered Crossword Generation: A Breakthrough

2024-12-23

Bill Moorier, a programmer, has been developing computer programs to generate crosswords for years. Recently, incorporating modern AI techniques, he's achieved remarkable results, producing crosswords that rival human-created ones. His approach combines traditional computer science algorithms and modern AI models. It begins with a massive wordlist, refined by AI to remove obscure terms. A grid with 180-degree rotational symmetry is then generated, filled with words using a backtracking search algorithm. Finally, a large language model generates clues, with post-processing to avoid revealing the answers. The system currently generates a complete crossword roughly every two minutes, though imperfections remain, such as occasional clue leakage (especially with acronyms). Future plans include themed crosswords, a significant challenge in crossword generation.

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(abstractnonsense.com)
AI Crossword Algorithm
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