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Symbolic Execution by Overloading __bool__

2024-12-24
Symbolic Execution by Overloading __bool__

This article presents a clever technique for symbolic execution of Python code by overloading the __bool__ function in the Z3 Python library. The author leverages Z3's capabilities to translate Python conditional statements into Z3 expressions, enabling path exploration and result analysis. This approach bypasses complex AST traversal and allows direct use within Python code, simplifying symbolic execution.

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(www.philipzucker.com)
Development symbolic execution __bool__ overloading

AI Dev Tools: Building a Prototype in 48 Hours – and the Implications for Silicon Valley

2025-03-14
AI Dev Tools: Building a Prototype in 48 Hours – and the Implications for Silicon Valley

The author recounts building a working app prototype in just 48 hours using AI development tools, shattering preconceived notions about software development speed. This experience revealed flaws in his initial idea and sparked a broader reflection on AI's impact on Silicon Valley. The author argues that while AI accelerates product iteration, it also risks a surge in products lacking domain expertise, ultimately favoring individuals with deep knowledge and unique insights.

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(benn.substack.com)
Development

The Amygdala and Psychiatric Disorders: From Neuroimaging to Transcranial Focused Ultrasound

2025-05-13
The Amygdala and Psychiatric Disorders: From Neuroimaging to Transcranial Focused Ultrasound

This review article explores the crucial role of the amygdala in emotional processing and its relationship to various psychiatric disorders such as anxiety, depression, and PTSD. It reviews numerous neuroimaging studies revealing abnormal amygdala activation patterns across different psychiatric conditions. Furthermore, it introduces novel neuromodulation techniques like transcranial magnetic stimulation and transcranial focused ultrasound in treating psychiatric disorders, discussing their impact on amygdala activity and related brain network connectivity. This research offers vital clues to understanding the neural mechanisms of psychiatric disorders and developing more effective therapies.

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(www.nature.com)
AI psychiatric disorders neuromodulation

The Pains and Pleasures of Typeface Licensing: A Designer's Perspective

2025-08-14
The Pains and Pleasures of Typeface Licensing: A Designer's Perspective

A designer shares their experiences navigating typeface licensing across numerous projects. High-quality commercial fonts and supporting independent foundries are key considerations. However, varying licensing terms from different foundries create complexities. The article explores ideal licensing features: clear and easily accessible terms, shareable shopping carts, straightforward payment options, flexible pricing models, and the ability to subset fonts. The author highlights the need for a balance between foundry needs and client usability for a smoother workflow.

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(davesmyth.com)
Design Typeface Licensing Commercial Fonts

Generative AI's Limitations: A Critique by Gary Marcus

2025-02-15

Cognitive scientist Gary Marcus is a prominent skeptic of generative AI, arguing that the current technological path suffers from technical and ethical flaws. He points out that Large Language Models (LLMs) excel at function approximation but fall short in learning functions, prone to "distribution shift" issues, and unable to understand abstract concepts or reliably follow instructions. Marcus contends that LLMs lack understanding of the real world, leading to logical errors and biases. He proposes integrating neural networks with classical AI methods to address these shortcomings. He introduces a new evaluation benchmark—the "comprehension challenge"—where an AI system should be able to understand a movie plot and answer related questions, measuring true comprehension.

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(cacm.acm.org)
AI AI limitations

Crafting a Killer Programming Languages Conference Talk

2025-09-03
Crafting a Killer Programming Languages Conference Talk

This blog post distills advice on delivering impactful presentations at programming languages conferences. The core argument centers around the concept of 'value': a good talk informs the audience of the work's significance, educates them with valuable takeaways, and entertains them. The author proposes three common value proposition frameworks, highlighting the importance of conveying value due to the audience's limited time. A successful talk necessitates thorough preparation and practice, ultimately aiming to leave a lasting impression and ensure the audience remembers and appreciates the presented work.

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(blog.sigplan.org)
Development academic presentations value proposition

Aqua Tofana: The Undetectable Poison of 17th Century Italy

2025-04-18
Aqua Tofana: The Undetectable Poison of 17th Century Italy

In 17th-century Italy, a colorless, odorless poison called Aqua Tofana spread silently. Made and sold primarily by women, it was often used to murder husbands for inheritance. While its inventors were executed, the formula persisted, leading to hundreds of deaths. Though its true potency is debated, the legend of Aqua Tofana profoundly impacted European society, fueling fears of secret murder and sparking numerous poisoning scandals. The story highlights the enduring power of myth and the anxieties surrounding clandestine poisoning in early modern Europe.

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(www.amusingplanet.com)
Misc Aqua Tofana Italian poison 17th-century crime

Beyond Good and Evil: A Philosophical Contemplation of Entanglement with Nature

2025-07-27
Beyond Good and Evil: A Philosophical Contemplation of Entanglement with Nature

This article explores the entangled relationship between humanity and nature, and the ethical dilemmas inherent within this relationship. From the perspectives of philosopher Friedrich Nietzsche and eco-philosopher Val Plumwood, the article challenges anthropocentric views, arguing that humanity is not a separate entity from nature but rather a part of its food chain. Plumwood's crocodile attack experience, along with Nietzsche's critique of free will and suffering, prompts a re-evaluation of our relationship with nature, considering how to transcend traditional dualistic morality to coexist harmoniously. The article also warns against the risks of blindly pursuing purity and health, pointing out that embracing entanglement is not easy and requires us to redefine ourselves and our interests.

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(aeon.co)
Misc Nietzsche

The Rise and Fall of Lisp at JPL: A Story of AI and Politics

2025-05-25

This article recounts the rise and fall of the Lisp programming language at the Jet Propulsion Laboratory (JPL). In the late 1980s, Lisp shone in JPL's robotics projects, successfully used in several robotic missions, including the Sojourner rover on the Mars Pathfinder mission (though Sojourner ultimately used C). However, due to political infighting and the blind pursuit of "industry best practices" (namely C++), Lisp was gradually marginalized at JPL and eventually abandoned, a tragedy in the author's view. The author argues that Lisp's elegance and expressive power made it particularly well-suited for JPL's one-of-a-kind, highly dynamic projects, and this decision resulted in a waste of valuable resources.

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(flownet.com)
Tech

Walmart's Tech Division Fires 1200 Contractors Amidst Corruption Scandal

2025-08-25
Walmart's Tech Division Fires 1200 Contractors Amidst Corruption Scandal

A major corruption scandal at Walmart's Global Tech division resulted in the sudden termination of 1200 technology contractors. A vice president was found to have orchestrated a years-long kickback scheme involving millions of dollars in payments from contracting agencies seeking preferential treatment. This incident exposes systemic corruption within the technology industry's outsourcing ecosystem, with layered subcontracting creating opaque accountability and fostering corruption. The Department of Justice has increased prosecutions of visa fraud and kickback schemes within IT consulting firms, while tighter regulations on H-1B visas aim to curb the abuses.

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(www.ctol.digital)
Tech tech corruption

Run C# Code Directly Without Project Files: .NET 10 Preview 4

2025-05-29
Run C# Code Directly Without Project Files: .NET 10 Preview 4

.NET 10 Preview 4 introduces a game-changing feature: you can now run C# files directly using `dotnet run app.cs`—no project file or scaffolding needed! This significantly lowers the barrier to entry for C#, making it ideal for learning, prototyping, or quick scripts. Leverage powerful file-level directives like `#:package`, `#:sdk`, and `#:property` to manage NuGet packages, SDKs, and MSBuild properties directly within your .cs file, all while maintaining compatibility with existing MSBuild concepts. Even as your script grows into a full application, seamless conversion to a project-based app is supported. This streamlined workflow simplifies the C# development experience, making it incredibly approachable and convenient for CLI utilities, automation scripts, and more.

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(devblogs.microsoft.com)
Development file-based apps

Linux's PATH: The Shell's Secret

2025-04-29

Ever wondered how Linux finds the commands you execute? The answer: it relies on the shell, not the kernel! This article delves into the mechanics of the PATH environment variable, revealing how shells (like dash) use functions like `padvance` to search for executables within PATH, while the kernel's `execve` syscall actually receives the full path. Programming languages like Python, Go, and Rust also implement their own PATH searching in their subprocess libraries, ultimately relying on underlying functions like `execvp`. The article also explains why shebangs require absolute paths and the clever role of `/usr/bin/env`.

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(blog.danielh.cc)
Development

The Hollow Center of AI: Technology vs. Human Experience

2025-05-24
The Hollow Center of AI: Technology vs. Human Experience

This article explores the unsettling feeling many have toward AI-generated content, arguing it stems not from malice but from a perceived "hollow center"—a lack of genuine intention and lived human experience. AI excels at mimicking human expression, but its inability to genuinely feel evokes anxieties about our uniqueness and meaning. Drawing on Heidegger and Arendt, the author posits technology as not merely tools, but world-shaping forces; AI's optimization logic flattens human experience. The response shouldn't be avoidance or antagonism, but a conscious safeguarding of the unquantifiable aspects of human experience: art, suffering, love, strangeness—preserving our unique place amidst technological advancement.

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(fakepixels.substack.com)
AI Human Experience

The Obscure Interact Model One Home Computer and its Surprisingly Deep Adventure Game

2025-04-07
The Obscure Interact Model One Home Computer and its Surprisingly Deep Adventure Game

This article delves into the story of the Interact Model One, a low-cost personal computer from 1978 that aimed to compete with giants like the Commodore PET but ultimately failed in the US market. However, its successor, the Victor Lambda, found success in France, leading to the development of games such as the surprisingly complex adventure game, *Troll Hole Adventure*. This 8-bit game, despite its limitations in memory and resolution, boasts a challenging puzzle design and deep gameplay, showcasing the ingenuity of early game developers working with constrained resources. The article follows the journey of the computer's creator, Ken Lochner, from his work on Dartmouth's time-sharing system to his foray into the personal computer market, highlighting the challenges and triumphs of this forgotten piece of computing history.

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(bluerenga.blog)
Game Personal Computer History 8-bit Games

type-machine: Simulating Structural Subtyping in Haskell

2025-08-20

Haskell programmers often struggle with data modeling, especially when dealing with record types with many fields. This blog post introduces type-machine, a Haskell library that leverages Template Haskell to simulate structural subtyping using type transformers and Is typeclasses. This simplifies record type manipulation and improves code efficiency. The library provides functions like pick, omit, and record, allowing for easy manipulation of record fields. Benchmarks demonstrate its performance advantages over alternative approaches.

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(arthi-chaud.github.io)
Development Structural Subtyping

LineageOS 22.1 Released: 30x Faster Extraction, New Music and PDF Apps

2024-12-31

LineageOS 22.1, based on Android 15 QPR1, is now available with significant improvements. Extraction utilities are 30 times faster, and two new apps have been added: Twelve, a music player, and Camelot, a PDF reader. SeedVault, Etar, and WebView have also been updated. Versioning has been adjusted to align with Android's minor version numbers, making it easier to distinguish Android versions. The project has streamlined its codebase, added support for more devices, and encourages developers to contribute code and translations.

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(lineageos.org)
Development

AI: Normal Tech, Not Superintelligence

2025-04-17
AI: Normal Tech, Not Superintelligence

This paper challenges the prevailing view of AI as a separate species, a highly autonomous, potentially superintelligent entity, arguing instead that AI is normal technology. The authors contend that AI's impact will be gradual, not sudden, based on an analysis of the different timescales of AI methods, applications, and adoption. They predict a future where humans and AI collaborate, with a significant portion of work focused on AI control and oversight. The paper also explores AI risks, such as accidents, arms races, misuse, and misalignment, advocating for mitigating these through reducing uncertainty and building system resilience rather than drastic policy interventions.

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(knightcolumbia.org)
AI technology development

ASKAP Uncovers 15 Giant Radio Galaxies

2025-04-26
ASKAP Uncovers 15 Giant Radio Galaxies

The Australian Square Kilometre Array Pathfinder (ASKAP) telescope has discovered 15 new giant radio galaxies, each spanning over 3 million light-years. These rare galaxies, typically found in low-density environments, feature jets and lobes of synchrotron-emitting plasma. ASKAP's high sensitivity and wide field of view were crucial in this discovery, providing valuable data for studying the formation and evolution of radio galaxies. The largest galaxy, ASKAP J0107–2347, is a double-double radio galaxy with two sets of double lobes; its newly formed inner lobes already stretch about 2 million light-years.

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(phys.org)
Tech radio galaxies

Microsoft Copilot Lands on Samsung TVs: Your AI Sidekick, Now on the Big Screen

2025-08-29
Microsoft Copilot Lands on Samsung TVs: Your AI Sidekick, Now on the Big Screen

Microsoft's AI assistant, Copilot, is coming to TVs, starting with Samsung's 2025 lineup. Users can ask Copilot for movie recommendations, spoiler-free episode summaries, and answer general questions. Copilot appears as a friendly, animated character, bouncing around the screen with mouth movements synced to its responses. It's integrated into Samsung Tizen OS, Samsung Daily Plus, and Click to Search, accessible via voice or remote. Signing in allows for a personalized experience using past conversations and preferences. Supported models include Samsung's 2025 Micro RGB, Neo QLED, OLED, The Frame Pro, The Frame TVs, and M7, M8, and M9 smart monitors. Microsoft plans to bring Copilot to LG TVs as well.

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(www.theverge.com)
Tech

XenevaOS: A Ground-Up Open-Source Operating System

2025-06-10
XenevaOS: A Ground-Up Open-Source Operating System

XenevaOS is a brand new operating system built from scratch, supporting both x86_64 and ARM64 architectures. Its kernel, 'Aurora', features a hybrid design. This open-source project welcomes contributions from developers. Current features include: ACPI support, x64 and arm64 kernels, full higher-half memory, DLL driver loading, USB3, high-definition audio, multiprocessor support (multiprocessor scheduler not yet ready), Chitralekha graphics library, Deodhai window manager, Namdapha desktop environment, various storage support, networking (IPv4, UDP/IP, TCP/IP, ICMP), and basic applications (music player, file browser, etc.). The project is currently built on a Windows environment.

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(github.com)
Development

San Francisco Startup Backed by YC: Security, Reliability, and Performance Focused

2025-06-30

A tightly-knit San Francisco-based startup, backed by Y Combinator, SV Angel, and founders from companies like Vercel, Slack, Dropbox, Replit, and Algolia, serves a diverse clientele ranging from rapidly growing startups to established enterprises. They prioritize listening to their customers and driving their success. Their development philosophy centers on security, reliability, and performance, employing a pragmatic approach to find working solutions and respond swiftly to customer feedback. They strive to build correct, future-proof solutions with high-quality design, working at both the infrastructure and product levels.

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(14.ai)
Startup Security, Reliability, Performance

Automating API Changes with Codemods: A Refactoring Revolution

2025-01-11
Automating API Changes with Codemods: A Refactoring Revolution

This article explores how codemods automate large-scale code changes, especially when dealing with breaking API changes. Leveraging Abstract Syntax Trees (ASTs), codemods precisely automate code transformations, significantly reducing the burden of manual refactoring. The article uses examples like removing stale feature toggles and refactoring complex React components, detailing the process using jscodeshift, and discusses potential pitfalls and solutions when scaling codemods. It highlights codemods' role in improving code quality and maintainability, showcasing a real-world case study of refactoring an Avatar component.

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(martinfowler.com)
Development API changes codemod

Classical Sorting Algorithms Reveal Unexpected Competencies in a Minimal Model of Basal Intelligence

2024-12-19
Classical Sorting Algorithms Reveal Unexpected Competencies in a Minimal Model of Basal Intelligence

A new study uses classical sorting algorithms as a model of morphogenesis, challenging conventional wisdom about these algorithms. By breaking assumptions of top-down control and perfectly reliable hardware, researchers discovered that arrays of autonomous elements sort themselves more reliably and robustly than traditional implementations, even in the presence of errors. Surprisingly, these algorithms exhibit the ability to temporarily reduce progress to navigate around defects and unexpected clustering behavior among elements in chimeric arrays following different algorithms. This discovery provides a novel perspective on diverse intelligence, demonstrating how basal forms of intelligence can emerge in simple systems without explicit encoding in their underlying mechanics.

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(arxiv.org)
AI diverse intelligence morphogenesis sorting algorithms

Google Expands AI-Powered Underage User Detection

2025-07-31
Google Expands AI-Powered Underage User Detection

Google is expanding its AI-powered age estimation technology to US users to identify underage accounts. The system analyzes search history and YouTube viewing habits to estimate age. If a user is deemed under 18, restrictions are implemented, including limited YouTube recommendations, disabled Maps Timeline, no personalized ads, and blocked access to adult apps on the Play Store. Users can appeal misidentification by uploading ID. This move reflects a global push for stronger online child safety measures, with governments in the US and UK pressuring tech companies to enhance protections.

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(www.theverge.com)
Tech

Dozens of VPN Apps on App Stores Hide Chinese Links, Exposing User Data

2025-06-12
Dozens of VPN Apps on App Stores Hide Chinese Links, Exposing User Data

A new report from the Tech Transparency Project reveals that more than two dozen private browsing apps on Apple and Google's app stores have undisclosed ties to Chinese companies, potentially exposing user data to the Chinese government. The report highlights 13 VPN apps on Apple's App Store and 11 on Google's Play Store linked to Chinese firms, which are legally obligated to share data with the government. Several apps are connected to Qihoo 360, a Chinese cybersecurity firm sanctioned by the U.S. Apple responded that it allows apps as long as they comply with its guidelines and local laws, and that it has guidelines for VPN developers prohibiting data sharing with third parties. However, this raises serious concerns about U.S. user data security, echoing similar anxieties surrounding potential TikTok bans.

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(thehill.com)
Tech Chinese companies

Lightweight Wearable Chip for Real-Time Heart Attack Detection

2025-05-11
Lightweight Wearable Chip for Real-Time Heart Attack Detection

Researchers at the University of Mississippi have developed a lightweight, energy-efficient chip implantable in wearables for real-time heart attack detection. Using AI and advanced mathematics, the chip analyzes ECGs to identify heart attacks with 92.4% accuracy, twice as fast as traditional methods. Its design allows integration into devices like smartwatches, potentially saving crucial time in diagnosis and treatment, reducing the risk of permanent damage. Future applications could extend to detecting other conditions like seizures and dementia.

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(medicalxpress.com)
Tech Heart Attack Detection

Raspberry Pi 2's 'Xenon Death Flash': A Bizarre Hardware Vulnerability Solved by the Community

2025-05-24
Raspberry Pi 2's 'Xenon Death Flash': A Bizarre Hardware Vulnerability Solved by the Community

In 2015, a bizarre hardware vulnerability was discovered in the Raspberry Pi 2: camera flashes caused instant shutdowns. Dubbed the "Xenon Death Flash," this phenomenon triggered a community-wide detective effort. Testing revealed the culprit: the U16 power regulator chip. Its WL-CSP packaging exposed the silicon die, making it susceptible to intense light, causing crashes. The community found a fix (Blu-Tack!), prompting the Raspberry Pi Foundation to release an improved hardware revision. This event showcased community power, highlighted the risks of miniaturization in modern electronics, and underscored the need for more comprehensive testing.

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(magnus919.com)
Hardware hardware vulnerability

Management Tip: Now, Together

2025-08-23
Management Tip: Now, Together

This post introduces a highly effective management technique called "Now, Together." When an engineer's task is delayed, managers can use one-on-one meeting time to complete the task together with the engineer. This not only solves problems promptly but also uncovers potential obstacles, such as lack of motivation, excessive workload, or undetected blockers. This allows managers to better support team members and improve team efficiency. Overuse of this technique may signal larger management issues requiring further attention.

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(natashajaffe.substack.com)
Development

AI Web Crawlers: Devouring the Open Web?

2025-09-01
AI Web Crawlers: Devouring the Open Web?

The rise of AI has unleashed a swarm of AI web crawlers, relentlessly scraping content to feed Large Language Models (LLMs). This results in 30% of global web traffic originating from bots, with AI bots leading the charge. Unlike traditional crawlers, these AI bots are far more aggressive, ignoring crawl delays and bandwidth limitations, causing performance degradation, service disruptions, and increased costs for websites. Smaller sites are often crippled, while larger sites face immense pressure to scale their resources. While solutions like robots.txt and proposed llms.txt exist, they are proving insufficient. This arms race between websites and AI companies risks fragmenting the web, restricting access to information, and potentially pushing the internet towards a pay-to-access model.

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(www.theregister.com)
Tech web traffic
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