Training the Strongest Model on a MacBook Pro in 5 Minutes: A Challenge

2025-08-14

The author challenges himself to train the strongest possible language model on a MacBook Pro in just five minutes. Experiments culminated in a ~1.8M parameter GPT-style transformer trained on ~20M TinyStories tokens, achieving ~9.6 perplexity. Optimizations focused on maximizing tokens-per-second, favoring MPS and avoiding gradient accumulation. Dataset selection proved crucial, with TinyStories' coherent, simple language proving superior. Transformers outperformed LSTMs and diffusion models. The optimal model size for a five-minute training window was found to be around 2M parameters, aligning with Chinchilla scaling laws.

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AI

Mindless Machines, Meaningless Myths: A Review of Robert Skidelsky's 'Mindless'

2025-08-18
Mindless Machines, Meaningless Myths: A Review of Robert Skidelsky's 'Mindless'

This review examines Robert Skidelsky's 'Mindless: The Human Condition in the Age of Artificial Intelligence,' which explores the philosophical implications of AI, automation, and the illusion of progress. The author argues that we inhabit a 'machine civilization' where technology shapes our thinking, work, and relationships, prompting fundamental questions about human meaning, purpose, and freedom. Skidelsky traces technological development from the Industrial Revolution to the digital age, showing that progress isn't always positive, potentially leading to meaningless work, over-reliance on technology, and threats to human well-being. He calls for deeper reflection on technological advancement, urging us to avoid the pitfalls of technological optimism.

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The Pentium's Mysterious ×3 Circuit: A Deep Dive into Chip Design

2025-03-02
The Pentium's Mysterious ×3 Circuit: A Deep Dive into Chip Design

In 1993, Intel released the high-performance Pentium processor. This article delves into the surprisingly complex design of a seemingly simple circuit within the Pentium: the multiply-by-three circuit (×3 circuit). This circuit is part of the floating-point multiplier; the Pentium uses radix-8 multiplication, which is faster than binary multiplication, but multiplication by three requires special handling. The article explains how this circuit combines techniques like carry lookahead, Kogge-Stone adders, and carry-select adders to maximize performance. Analysis of microscope images of the chip reveals the intricate structure of the ×3 circuit and its crucial role in the Pentium, highlighting the ingenuity and technical innovation in processor design.

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Shadowcat Co-founder Matt S. Trout Passes Away

2025-07-10

It is with deep sadness that we announce the passing of Matt S. Trout, co-founder of Shadowcat Systems, at the age of 42. He and Mark Keating founded Shadowcat in 2005. In recent years, Matt had taken a sabbatical from work and online communities due to health issues. Despite this, he maintained a keen interest in the modern world and its evolving systems. Further details will be shared later. Messages of condolence may be sent through usual channels.

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Misc

The Man Keeping 70-Year-Old Pinball Machines Alive

2025-01-06
The Man Keeping 70-Year-Old Pinball Machines Alive

Steve Young, a metallurgical engineer with a lifelong passion for pinball, has built The Pinball Resource, a unique business that supplies parts and expertise for repairing vintage pinball machines. His vast collection of rare parts and schematics, accumulated over 50 years, makes him the go-to resource for enthusiasts worldwide. Operating out of an unassuming workshop, Young eschews modern marketing, relying instead on word-of-mouth and a reputation for trust and expertise to maintain his thriving, old-school business.

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Empirical Health: Seeking Design Engineer to Revolutionize Primary Care

2025-02-11
Empirical Health:  Seeking Design Engineer to Revolutionize Primary Care

Empirical Health, a virtual-first medical service using AI and wearable health sensors, is hiring a Design Engineer. You'll build core features for their patient-facing mobile app (React Native, TypeScript), crafting intuitive data visualizations, designing GenAI UI patterns beyond chat, and launching features to improve AI-driven care plans. They emphasize rapid iteration, impactful work, and a small, experienced team. This role offers a unique opportunity to make a real difference in healthcare.

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HP 9845C: A Colorful Pioneer of 80s Computer Graphics

2024-12-13

In 1981, the HP 9845C, the top-of-the-line model in the 9845 series, emerged as the first HP computer to support color, stunning the world with its powerful graphics capabilities. Featuring hardware-accelerated vector drawing and polygon fill, and supporting fast matrix operations for 3D model rendering, this machine initially designed for scientific and engineering use quickly became a multipurpose system, even contributing to the graphic scenes in the 1983 film "WarGames." Its demo program was remarkable, boasting over 4000 lines of code and showcasing cutting-edge concepts like 3D shading, ordered dithering, wireframe rendering, interactive light pen control, and color infographics at a high resolution of up to 4913 colors.

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Revisiting Deluxe Paint: A 40-Year-Old Pixel Art Powerhouse

2025-09-09
Revisiting Deluxe Paint: A 40-Year-Old Pixel Art Powerhouse

Forty years later, the author revisits Deluxe Paint III, a classic pixel art program. By working through the software's tutorials and testing animation tools, they explore its unique features such as color mixing, ranges, and stenciling, comparing them to modern image software. The article highlights Deluxe Paint's collaborative toolset, encouraging creative exploration rather than rigid precision, a stark contrast to modern software's focus on efficiency. The author concludes that Deluxe Paint remains a powerful and pure form of digital expression.

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Design

Flexible Software Design Trumps Rigid Domain Models

2025-09-08

This article challenges the popular software design principle of tightly binding code to the domain model. The author argues that over-emphasizing the avoidance of invalid states, such as through strict database schemas and type constraints, limits software flexibility and makes it difficult to handle inevitable real-world exceptions. Using state machines and foreign key constraints as examples, the author demonstrates how to allow arbitrary state transitions while keeping the core design simple, thus improving software adaptability and maintainability. Ultimately, the author advocates for allowing the representation of some invalid states in user-facing software to cope with evolving requirements and unforeseen circumstances.

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Development domain model

The Evolution of the Telephone Ring: From Pencil Thumps to Dual-Tone Ringing

2025-02-07
The Evolution of the Telephone Ring: From Pencil Thumps to Dual-Tone Ringing

After the invention of the telephone in 1876, notifying someone of an incoming call was a challenge. Early methods involved crudely thumping a pencil on the diaphragm, which was inefficient and damaging. Thomas A. Watson then invented a 'hammer' device, followed by a 'buzzer,' but the sound was harsh. Finally, in 1878, Watson developed the dual-tone ringer, which became the global standard for telephone signaling, solving the incoming call notification problem. This narrative showcases the evolution of early telephone technology.

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World's Fastest Petahertz Quantum Transistor Developed

2025-05-24
World's Fastest Petahertz Quantum Transistor Developed

Researchers at the University of Arizona have developed the world's fastest petahertz quantum transistor using ultrafast light pulses to manipulate electrons in graphene. This groundbreaking achievement leverages quantum tunneling to achieve speeds over 1,000 times faster than current computer chips. The transistor operates at ambient conditions, paving the way for commercial applications and revolutionizing computing in fields like AI, space exploration, and healthcare.

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Is *Atlas Shrugged* the New Vibe?

2025-01-18
Is *Atlas Shrugged* the New Vibe?

This podcast discussion delves into the surprising resurgence of Ayn Rand's *Atlas Shrugged*. Two guests analyze the novel's compelling plot, memorable characters, and insightful commentary on contemporary societal issues. They argue that *Atlas Shrugged* transcends its reputation as a political manifesto, offering a nuanced exploration of rationality, individual achievement, and social responsibility, making it relevant even today. The conversation highlights the novel's enduring appeal and its influence on prominent figures in the tech and political worlds.

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Sqawk: SQL-powered command-line tool for processing delimited files

2025-05-26
Sqawk: SQL-powered command-line tool for processing delimited files

Sqawk is an SQL-based command-line tool inspired by awk, designed for efficient processing of delimiter-separated files like CSV and TSV. It loads data into in-memory tables, allowing for powerful SQL queries (SELECT, INSERT, UPDATE, DELETE) with filtering, sorting, aggregation, and multi-table joins. Sqawk boasts features like automatic type inference, null value support, custom delimiters, and a safe operation mode preventing accidental file modification. Its intuitive syntax and speed make it ideal for data manipulation tasks.

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Development

Klarna's AI Customer Service Pivot: Humans Are Back

2025-05-11
Klarna's AI Customer Service Pivot: Humans Are Back

After boasting last year that its AI chatbot could replace 700 human representatives, buy now, pay later giant Klarna is reversing course. While the AI handled routine inquiries efficiently, the company found that human empathy and expertise were crucial for complex or emotionally charged situations. Klarna is now prioritizing human-powered customer service, viewing AI as a supplementary tool rather than a replacement. They're recruiting extensively for a flexible, remote-work customer service model, aiming to improve customer experience and address the limitations of AI in handling nuanced interactions. This shift highlights the ongoing need for human connection in customer service, even in a rapidly automating world.

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LWN Faces Economic Headwinds: Subscription Drop and Future Challenges

2025-05-03

LWN.net, a news site focused on Linux and free software, is experiencing economic headwinds. Since March, they've seen a significant drop in new subscriptions and renewals, correlating with the US administration's attacks on the global trade system and the resulting economic downturn. While not yet an existential threat, this is a serious concern. LWN is responding by tightening its belt and appealing to readers to subscribe or encourage their employers to establish group subscriptions to ensure continued operation. Inflation and anti-US sentiment pose further potential challenges. Despite these difficulties, LWN remains committed to providing high-quality content and expresses gratitude for its readers' long-standing support.

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CISA's Leadership Exodus Deepens Amidst Budget Cuts and Security Concerns

2025-06-12
CISA's Leadership Exodus Deepens Amidst Budget Cuts and Security Concerns

The US Cybersecurity and Infrastructure Security Agency (CISA) is facing a leadership crisis. Executive Director Bridget Bean's departure follows a pattern of high-level exits, leaving the agency without a Senate-confirmed director and struggling with significant budget cuts. A former employee cited a "culture of fear" under the new administration as hindering CISA's mission. With potential budget cuts ranging from $135 million to $495 million, and the confirmation of a new director blocked, CISA's future, and the nation's cybersecurity, remains uncertain.

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Trump Announces $500B AI Infrastructure Investment

2025-01-21
Trump Announces $500B AI Infrastructure Investment

Shortly after his inauguration, the Trump administration announced a massive $500 billion investment in AI infrastructure, spearheaded by a new entity called 'Stargate,' a joint venture between OpenAI, Oracle, and SoftBank. The initial $100 billion investment will focus on building data centers and power generation in Texas to fuel further AI development. This is touted as a declaration of confidence in America's potential and is also linked to advancements in digital health records and disease treatment. While the project's initial planning occurred under the Biden administration, Trump is highlighting it as a key economic achievement of his new term.

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Radio Connects: ARRL Field Day

2025-06-29
Radio Connects: ARRL Field Day

Over 31,000 amateur radio operators (“hams”) across the US and Canada participate in ARRL Field Day each year on the fourth weekend in June. This event combines a picnic, campout, emergency preparedness practice, and informal contest, showcasing amateur radio's role in connecting people, emergency communication, and STEM education. Participants set up radio equipment in remote locations, making contacts with other stations and demonstrating the value of ham radio to the public. It's also a great opportunity for hams to make friends, learn new skills, and give back to their communities.

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Chernobyl Radiation Crashed a Soviet Rail System

2025-08-20

In the 1980s, programmer Sergei encountered mysterious crashes on an SM-1800 microcomputer at a Soviet rail station. The system, used for routing trains, would randomly fail at night. Investigation revealed the crashes only occurred when processing livestock from northern Ukraine and western Russia. Suspecting Chernobyl radiation, Sergei confirmed his theory: high radiation levels flipped bits in the SM-1800's memory. The Soviet government mixed contaminated and uncontaminated meat to avoid waste. Upon discovering this, Sergei immediately filed immigration papers. The computer crashes resolved themselves as radiation levels dropped.

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Tech

AI Adoption in the US: Younger Generations Embrace AI, But Limitations Remain

2025-07-30
AI Adoption in the US: Younger Generations Embrace AI, But Limitations Remain

A recent poll reveals that most US adults utilize AI for information searches, yet its application in work tasks, email drafting, and shopping remains limited. Younger adults are significantly more likely to integrate AI into their lives, employing it for brainstorming and work-related activities. The survey highlights that 60% of Americans (74% of those under 30) use AI for information retrieval at least occasionally. However, only about 40% employ AI for work tasks or idea generation, suggesting that the tech industry's promises of highly productive AI assistants haven't yet materialized for most. Younger Americans demonstrate a notably higher AI adoption rate, especially for brainstorming, with those under 30 twice as likely to use it compared to those aged 60 and older. Individuals like 34-year-old Courtney Thayer selectively utilize AI, such as using ChatGPT for meal planning and nutritional calculations, but avoid it for crucial information, particularly medical advice, due to concerns about AI inaccuracies. In summary, while information search is the most prevalent AI application, its adoption in work, email, and shopping lags, with the younger generation's greater acceptance potentially signaling a future shift in broader AI usage.

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Aella: The Internet's Unfiltered Sex Researcher

2025-05-15
Aella: The Internet's Unfiltered Sex Researcher

Aella, an OnlyFans star and sex researcher, has gained notoriety for her candid approach to sexuality and online research. Using large-scale online surveys, she delves into contemporary sexual behavior, challenging the limitations of traditional sex research. While her methods are controversial, her data offers a unique perspective on 21st-century sexuality and sparks debate about the internet's impact on sexual culture. Aella's story also highlights the complexities and challenges of self-expression in the digital age and its disruption of traditional social norms.

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Prevent Common Go Bugs with Custom Types

2025-07-25
Prevent Common Go Bugs with Custom Types

In Go development, mixing up integers, strings, or UUIDs representing different things leads to subtle bugs. This post introduces a simple yet effective technique: define distinct types for different meanings. For instance, use AccountID and UserID for account and user IDs respectively; the compiler will catch type mismatches, preventing errors. The author demonstrates this in their libwx weather library, avoiding errors from using generic types like float64. This simple yet often overlooked technique is worth adopting.

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Development Coding Best Practices

Microsoft Tests Ad-Supported, Feature-Limited Free Office for Windows

2025-02-28
Microsoft Tests Ad-Supported, Feature-Limited Free Office for Windows

Microsoft is testing a free, ad-supported version of its Office suite for Windows. This limited version includes stripped-down versions of Word, Excel, and PowerPoint, omitting many advanced features. For example, Word lacks tables and mail merge, Excel lacks PivotTables and Power Query, and PowerPoint lacks custom slideshows. Documents must be saved to OneDrive for editing; local files are read-only. The "free" version displays 15-second video ads every few hours and a persistent ad sidebar. While Microsoft officially denies plans for a free, ad-supported desktop Office, this test suggests exploration of this monetization model, potentially leading to pre-installation on new PCs or other distribution methods.

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The Zombocom Problem: From 'Anything' to 'Something Specific' in Software Development

2024-12-29
The Zombocom Problem: From 'Anything' to 'Something Specific' in Software Development

This article explores the 'Zombocom Problem' – the failure of many low-code/no-code platforms, super apps, etc., due to their inability to meet specific user needs. The author argues that success hinges on solving a specific problem for a specific user, finding product-market fit. Amazon's success story illustrates this: it started as an online bookstore, gradually expanding into other areas. Similarly, Excel succeeded because it initially targeted small business owners and accountants. The author emphasizes that platforms should emerge from products, not the other way around; build great standalone products first, then consider platformization. Ultimately, the author concludes that the key to success lies in combining systems thinking and product thinking—understanding system-level opportunities while identifying the first best customer, thus transforming from a 'single-purpose product' to a 'platform'.

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Chrome Kills uBlock Origin, Firefox Rises?

2025-07-22

Chrome's Manifest V3 crippled the powerful ad-blocker uBlock Origin, pushing many users towards Firefox. The author details Firefox's advantages: fully open-source, effective ad-blocking, an excellent Android version supporting the full uBlock Origin extension, and high customizability. They share their Firefox setup, including using uBlock Origin with custom filters for enhanced privacy and ad-blocking, and leveraging Firefox's container feature for managing multiple accounts. The article concludes by highlighting hidden Firefox features like quick find, bypassing right-click disabling, and URL search shortcuts. The author champions Firefox as a way to reclaim a cleaner, more beautiful web experience.

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(kau.sh)
Development

Building a Voice Chatbot with WebRTC and the OpenAI Realtime API

2025-03-18
Building a Voice Chatbot with WebRTC and the OpenAI Realtime API

This post details building a voice chatbot using WebRTC and the OpenAI Realtime API. The author overcomes sparse documentation to provide a step-by-step guide covering microphone audio acquisition, WebRTC connection establishment, data channel setup, and Realtime API message exchange. Best practices are highlighted, including function calls for responses and session termination, and running the application on older Google AIY Voice Kits. The author explores alternative approaches, such as headless browser solutions and embedded SDKs, showcasing WebRTC's expanding reach.

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Development Voice Chatbot

Perceptually-Aligned Dynamic Facial Projection Mapping: High-Speed Tracking & Co-axial Setup

2025-02-03
Perceptually-Aligned Dynamic Facial Projection Mapping: High-Speed Tracking & Co-axial Setup

Researchers developed a novel high-speed dynamic facial projection mapping (DFPM) system that significantly reduces misalignment artifacts. This is achieved through a high-speed face-tracking method using a cropped-area-limited interpolation/extrapolation-based face detection and a fast Ensemble of Regression Trees (ERT) for landmark detection (0.107ms). A lens-shift co-axial projector-camera setup maintains high optical alignment with minimal error (1.274 pixels between 1m and 2m). This system achieves near-perfect alignment, improving immersive experiences in makeup and entertainment.

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Germany's Isar Aerospace Launches Spectrum Rocket, Marking a Pivotal Step Towards European Space Independence

2025-04-01
Germany's Isar Aerospace Launches Spectrum Rocket, Marking a Pivotal Step Towards European Space Independence

Germany's Vice Chancellor and Economy Minister, Robert Habeck, lauded the successful launch of Isar Aerospace's Spectrum rocket, highlighting Germany's advancements in innovative space technology and its crucial role in securing Europe's independent access to space. Spectrum, Germany's largest domestically built launch vehicle since WWII, represents a significant leap. The launch employed SpaceX's iterative development model, contrasting sharply with Europe's traditional approach. This marks a shift in European space ambitions, aiming to break free from reliance on other nations for space technology.

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Level Up Your Coding: The Infinite Canvas Advantage

2025-03-15

A game developer shares how using a graphics tablet and Milton software revolutionized his note-taking process. Milton's infinite canvas and zoom capabilities allow for clear visualization of complex algorithms. Even when days pass with minimal code written, reviewing notes reveals the thought process and planning, maintaining momentum. The author advocates for graphics tablets, suggesting even entry-level models significantly boost efficiency.

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