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Meteor Burst Communication: A Resurgent Tech for National Security?

2025-04-20

This paper explores the potential of meteor burst communication (MBC) for national security. For decades, researchers have investigated using the ionized trails left by meteors in the atmosphere for communication. Early systems like JANET and COMET were deployed, and the US established SNOTEL and AMBCS. Advances in microprocessors have significantly improved MBC's data rates and reliability, presenting a renewed potential for national security applications such as command and control, intelligence, surveillance, and reconnaissance. While MBC has limitations like intermittent service and noise susceptibility, its flexibility and inherent anti-jamming capabilities make it a valuable supplementary communication method.

(ronaldelliott.com)

Tech meteor burst communication communication technology

RealPage Sues Berkeley Over Algorithmic Rent-Setting Ban

2025-04-05

RealPage Sues Berkeley Over Algorithmic Rent-Setting Ban

RealPage, a real estate software company, filed a lawsuit against Berkeley, California, over a city ordinance banning landlords from using algorithms to set rent. RealPage claims the ordinance violates its free speech rights and is based on misinformation about its products. Berkeley argues the algorithms contribute to rising rents, while RealPage counters that a lack of housing supply is the primary driver. The Department of Justice previously sued RealPage for alleged cartel-like price collusion. San Francisco, Philadelphia, and Minneapolis have passed similar ordinances. RealPage is considering legal action against other cities.

(apnews.com)

Tech

Stop Explaining e with Compound Interest

2025-04-11

Math classes often introduce the natural constant *e* using compound interest: a 100% annual interest account doubles with yearly compounding, becomes 2.25 times with semi-annual compounding, approximately 2.714 times with daily compounding, and exactly *e* times with continuous compounding. However, this is misleading. Compound growth is exponential, but the example uses linear division of compounding periods. Banks must separately publish the interest rate, compounding interval, and annual percentage yield. There are far more elegant ways to introduce *e*, such as its unique property of being its own derivative, or its crucial role in Euler's formula. These approaches don't require prior knowledge of *e* and are mathematically more rigorous.

(blog.danielh.cc)

Misc math natural constant e compound interest

Product Purgatory: Why Good Products Don't Sell

2025-05-09

Product Purgatory: Why Good Products Don't Sell

Many startups face 'Product Purgatory': a good product, loved by customers, yet unsold. The author introduces the 'Magic Wand Test': if the product were free and perfectly implemented, would the customer use it? A 'no' suggests the product's value doesn't significantly outweigh implementation costs (risk, time, money). Even passing the test, customers might delay purchase due to a lack of urgency. The author advises focusing on customers urgently needing the product (e.g., due to regulatory pressure, competition, or emergencies) to escape Product Purgatory.

(longform.asmartbear.com)

Startup customer needs

AI Democratizes Creation: Judgement, Not Skill, Is King

2025-06-02

In 1995, Brian Eno presciently noted that computer sequencers shifted the focus in music production from skill to judgment. This insight perfectly mirrors the AI revolution. AI tools are democratizing creative and professional tasks, lowering the technical barriers to entry for everyone from writing to coding. However, the true value now lies in discerning what to create, making informed choices from countless options, evaluating quality, and understanding context. The future of work will prioritize strategic judgment over technical execution, demanding professionals who can ask the right questions, frame problems effectively, and guide AI tools towards meaningful outcomes.

(notsocommonthoughts.com)

AI Judgment

Hacking My Landlord's Boiler: A Replay Attack Story

2025-04-22

Hacking My Landlord's Boiler: A Replay Attack Story

Frustrated with his apartment's inefficient and uneven heating system, the author devised a clever solution using a replay attack. Leveraging inexpensive SDRs (an RTL-SDR and a HackRF clone), he intercepted and replicated the 868MHz radio signals between the existing thermostat and boiler. This allowed him to remotely control the boiler's on/off state. Despite significant challenges, he successfully integrated this into Home Assistant, creating custom automations and using sensors to achieve comfortable temperature control.

(blog.videah.net)

Hardware

Running DOOM from a QR Code: A Tale of Extreme Compression

2025-04-18

Running DOOM from a QR Code: A Tale of Extreme Compression

Programmer Kuber Mehta has achieved the seemingly impossible: running the classic game DOOM directly from a QR code! Dubbed 'The Backdooms,' this project utilizes zlib and gzip compression, base64 encoding, and a cleverly designed self-extracting HTML wrapper to deliver a fully playable DOOM experience without any downloads. The development journey was fraught with challenges, requiring iterative adjustments to compression ratios and QR code versions. This incredible feat showcases the power of extreme compression and innovative application design, a testament to programmer ingenuity and perseverance.

(github.com)

Game QR Code Game Compression

Anthropic Launches Voice Mode for Claude Chatbot

2025-05-31

Anthropic Launches Voice Mode for Claude Chatbot

Anthropic has rolled out a beta voice mode for its Claude chatbot app, allowing users to have full spoken conversations. Available initially in English, the feature uses the Claude Sonnet 4 model and offers multiple voice options. Users can switch between text and voice, and view transcripts and summaries. While free users have usage limits, paid subscribers gain access to features like Google Workspace integration. This follows Anthropic's earlier discussions with Amazon and ElevenLabs regarding voice capabilities.

(techcrunch.com)

AI Voice Interaction

Debunking the Airplane Lift Myth: The Bernoulli Fallacy

2025-04-23

The common explanation for airplane lift using Bernoulli's principle—faster air over the top, lower pressure, thus lift—is fundamentally flawed. This article argues that this "equal transit time" fallacy, while simple and intuitive, neglects crucial factors like viscosity, entrainment, and the Coanda effect, and violates Newton's third law. Lift primarily results from the downward deflection of air by the wing, a consequence of Newton's third law; even symmetrical airfoils generate lift. While Bernoulli's equation itself isn't wrong, its application in explaining lift often involves erroneous assumptions and additions.

(hsm.stackexchange.com)

Tech Bernoulli's principle airplane lift fluid mechanics

Hacking Persian Learning with Anki, ChatGPT, and YouTube

2025-09-24

The author details their effective Persian learning system using Anki, ChatGPT, and YouTube extensions. They create various Anki flashcards, including reading practice and English-Persian translation cards, leveraging ChatGPT for instant clarification. A key technique involves using a dual-subtitle YouTube extension, watching videos at 75% speed, and repeatedly reading and listening to solidify comprehension, culminating in real-time understanding.

(cjauvin.github.io)

Misc

Ruby Namespaces: A Critical Look at a Proposed Implementation

2025-05-12

This blog post questions a proposed implementation of namespaces in Ruby. The author argues that the proposal aims to solve problems like library name clashes, globally shared modules, and multiple gem versions, but these issues are not frequently encountered in practice. The complexity introduced by the proposal, such as deduplication, might outweigh its benefits. The author prefers a lighter-weight approach, such as restricting constant access and providing a BasicObject-like mechanism to improve code maintainability and modularity.

(bugs.ruby-lang.org)

Development Namespaces Modularity

Rapid Storage: Sub-Millisecond Latency Storage Built on Colossus

2025-04-10

Rapid Storage: Sub-Millisecond Latency Storage Built on Colossus

Google's Rapid Storage leverages the Colossus architecture to achieve an incredible 20 million requests per second throughput, providing sub-millisecond latency for reads and writes, particularly beneficial for AI/ML applications. Using gRPC streaming and a stateful protocol, Rapid Storage dramatically improves data access efficiency, preventing storage latency from blocking accelerators during model pre-training, for example. Its robust fault tolerance ensures data consistency and continuity even with client or server failures, enabling unlimited appends and resuming interrupted operations. This makes it a powerful solution for large-scale data processing.

(cloud.google.com)

Tech

AWS S3: How Cheap Hard Drives Power a Massively Scalable Storage System

2025-09-24

AWS S3: How Cheap Hard Drives Power a Massively Scalable Storage System

This article unveils the astounding scale and underlying technology of Amazon S3. S3 leverages inexpensive HDDs, overcoming the limitations of slow random I/O through massive parallelization, erasure coding, and clever load balancing techniques (like the 'power of two choices'). This enables millions of requests per second, ultra-high throughput, and exceptional availability. S3's data storage strategy incorporates random data placement, continuous rebalancing, and the smoothing effect of scale to avoid hot spots. Parallelization at the user, client, and server levels further boosts performance. Ultimately, S3 has evolved from a backup and image storage service to a foundational component of big data analytics and machine learning infrastructures.

(bigdata.2minutestreaming.com)

Tech

Writing a Windows Kernel Driver in Rust

2025-02-08

Writing a Windows Kernel Driver in Rust

This article details the experience of writing a Windows kernel driver in Rust. The author overcomes the verbosity of converting between Rust and C/C++ types, using `wdk` crates to build a simple WDM driver – "Booster" – capable of changing the priority of any thread. The article walks through project setup, dependency configuration, core code implementation, driver installation, and testing, highlighting challenges and future improvements for Rust in kernel driver development.

(scorpiosoftware.net)

Development kernel driver

The 1890s Kinetoscope: A Precursor to AI's Loneliness?

2025-02-05

The 1890s Kinetoscope: A Precursor to AI's Loneliness?

This article draws parallels between the single-user Kinetoscope of the 1890s and today's AI technology, particularly large language models. The article argues that both technologies, while offering mass-produced content, create a simultaneously interconnected yet atomized experience, resulting in a new kind of technological loneliness. The author explores the historical context of Edison's invention and its surprisingly prescient design choice, highlighting the uncanny resemblance to our current reliance on personalized algorithmic feeds and AI companions. It prompts reflection on the direction of technological progress and its impact on individual experience.

(resobscura.substack.com)

AI Loneliness

Mitochondria: The Social Networks of Cells and Human Health

2025-05-21

Mitochondria: The Social Networks of Cells and Human Health

This article delves into the social nature of mitochondria—the powerhouses of cells—and their impact on human health. The author, drawing on personal research experiences, reveals that mitochondria not only generate energy but also maintain cellular and organismal health through communication, fusion, and information exchange, like a complex social network. Mitochondrial dysfunction is closely linked to various diseases, including diabetes, cancer, autism, and neurodegenerative disorders. The article also explores how exercise, social connection, and ketogenic diets promote mitochondrial health, thereby improving physical and mental well-being, and suggests that maintaining energy flow through the mitochondrial collective may be key to good health and a meaningful life.

(www.scientificamerican.com)

Tech cellular energy health longevity

Google Translate Bug Turns 'Yes' into 'Forks' in Online Surveys

2025-03-26

Google Translate Bug Turns 'Yes' into 'Forks' in Online Surveys

A bizarre bug in a Pew Research Center's 2024 online survey replaced the 'yes' option with 'forks' for some respondents. The investigation revealed a 'lightbox popup' design feature caused some browsers to misinterpret the English survey as Spanish, triggering Google Translate's auto-translation. Google Translate, however, contained a peculiar error: translating 'yes' from Spanish to English resulted in 'forks'. Pew Research Center resolved the issue by disabling the browser's translation function and improving its programming. Analysis showed the bug had a negligible impact on the survey data.

(www.pewresearch.org)

Tech online surveys programming bug

Reverse Engineering Linear's Sync Engine: A Deep Dive

2025-05-31

Reverse Engineering Linear's Sync Engine: A Deep Dive

This detailed study reverse-engineers Linear's Sync Engine (LSE), showcasing its elegant solution to challenges like supporting arbitrary data models, offering rich features (partial syncing, permission control, undo/redo, offline availability, and edit history), and providing a great developer experience. The author dissects LSE's model definition, MobX usage, bootstrapping process, local database construction, lazy data hydration, client-server synchronization, and undo/redo mechanisms through a deep dive into Linear's frontend code. The article explains how LSE defines models and metadata, performs bootstrapping and lazy loading, and handles transactions, incremental updates, and conflict resolution. LSE aims to empower developers to build collaborative applications without needing to be sync engine experts.

(github.com)

Development sync engine

Ancient Greek Art Duel Remixed: The Hardham Mural and the Illusion of Reality

2025-03-05

Ancient Greek Art Duel Remixed: The Hardham Mural and the Illusion of Reality

This article connects a 12th-century mural at Hardham church to the famous painting contest between Zeuxis and Parrhasios in ancient Greece. Parrhasios, known for his deceptively realistic curtain painting, tricked even Zeuxis. The Hardham mural uses this same trick in its depiction of 'The Deception of Adam and Eve', challenging viewers' perceptions of images. The article explores the nature and value of art and warns against being fooled by visual realism, advocating for a 'spiritual vision' to transcend the limitations of visible things.

(keithamcgowan.blogspot.com)

Design Painting Techniques Visual Perception

Virtual Threads Ate My Memory: A Web Crawler's Tale

2025-05-30

Virtual Threads Ate My Memory: A Web Crawler's Tale

This post details a developer's experience building a web crawler with Java's Virtual Threads. Initially, performance soared, but the crawler crashed with an `OutOfMemoryError`. The author explains how they used Virtual Threads to dramatically increase speed, then shows how they fixed the memory issue by introducing a semaphore to limit concurrent tasks. The comparison between platform threads and Virtual Threads highlights the need for explicit resource management when using Virtual Threads, as the JVM's implicit backpressure mechanisms no longer apply. The author concludes that while Virtual Threads offer significant performance gains, developers must carefully manage resources to avoid memory problems.

(dariobalinzo.medium.com)

Development Virtual Threads Web Crawler

Five Persuasion Tactics for Engineering Managers

2025-05-13

Five Persuasion Tactics for Engineering Managers

This article explores five persuasion techniques commonly used by engineering managers, illustrated with real-life examples. First is the 'Nemawashi' method, involving preemptive communication with stakeholders to build support and minimize conflict. Next is 'Decoy Pricing,' strategically presenting options to guide the desired choice. Then, 'Reverse Psychology' uses counterintuitive suggestions to trigger a desired response. Following is 'Let Me Decide That For You (LMDTFY),' where a decision is made with the option of veto, fostering autonomy. Finally, 'Engineered Serendipity' involves creating coincidences to facilitate communication. These tactics can significantly improve an engineering manager's effectiveness in project approvals, resource acquisition, and team collaboration.

(newsletter.manager.dev)

Development Persuasion Techniques

Texas Governor Vetoes THC Ban, Sparking Political Firestorm

2025-06-23

Texas Governor Vetoes THC Ban, Sparking Political Firestorm

Texas Governor Greg Abbott vetoed a bill banning THC products just minutes before the deadline, immediately calling a special legislative session to strictly regulate the substance instead. This last-minute action saves the Texas hemp industry, but clashes directly with Lt. Gov. Dan Patrick's top priority. Abbott argued the ban was unconstitutional and conflicted with federal law, calling for a regulatory framework similar to alcohol, including prohibiting sales to minors and enhanced enforcement. Patrick sharply criticized the veto, claiming it abandons law enforcement and families harmed by high-potency THC products. The move highlights the complexities of Texas' hemp regulation and the intensity of the political battle, sparking debate over public safety, consumer rights, and political maneuvering.

(www.texastribune.org)

Politics Texas Politics Cannabis Regulation

Bikini Atoll: An Ecological Miracle Amidst Atomic Scars

2025-03-15

Bikini Atoll: An Ecological Miracle Amidst Atomic Scars

Nearly 60 years after 23 nuclear detonations scarred Bikini Atoll, it appears as an idyllic Pacific paradise once again. However, Stanford professor Stephen Palumbi's research reveals a surprising ecological recovery near Bravo Crater, the site of the most powerful US bomb ever detonated. Flourishing coral reefs and fish populations exist despite the devastation. Palumbi's team will sequence the genomes of corals and coconut crabs to study genetic mutations and adaptation to radiation, with potential applications in cancer research. This research highlights the ocean's resilience while serving as a stark reminder of the past and the importance of preventing similar disasters.

(medium.com)

Tech nuclear testing ecological recovery genomic research

A Hagiography of Nine Inch Nails and their Mystical Guitarist

2025-03-15

A Hagiography of Nine Inch Nails and their Mystical Guitarist

This essay is a deeply personal reflection on the author's 25-year relationship with Nine Inch Nails, focusing on the band's music and the mystical aura surrounding their guitarist, Robin Finck. The author explores themes of rage, sexuality, and mysticism within NIN's work, detailing Finck's unique stage presence and playing style as a form of ecstatic experience. The writing process is likened to creating a hagiography, weaving together personal experiences of music, identity, and spiritual exploration into a compelling cultural critique and personal narrative. It's a captivating read for anyone interested in music, identity, or the power of artistic expression.

(www.thewhitereview.org)

Misc

Zyxel Firewall Bricked by Buggy Update: On-Site Fix Required

2025-01-29

Zyxel Firewall Bricked by Buggy Update: On-Site Fix Required

A faulty application signature update released by Zyxel last Friday is causing reboot loops, ZySH daemon failures, and login issues for some users. Affected devices include USG Flex and ATP Series devices running ZLD firmware with active security licenses and dedicated signature updates enabled in on-premises/standalone mode. The only workaround requires physical access to the firewall via a console/RS232 cable for recovery. Zyxel has disabled the application signature on its servers to prevent further impact.

(www.theregister.com)

Hardware Software Bug

Microsoft Office's Startup Boost: Faster Launch, Slower PC?

2025-05-01

Microsoft Office's Startup Boost: Faster Launch, Slower PC?

Microsoft is introducing a new "Startup Boost" feature for Office, pre-loading apps like Word and Excel when Windows starts to speed up their launch times. However, this could slow down overall computer performance. The feature will only be enabled on PCs with at least 8GB of RAM and 5GB of free disk space. While users can disable it in Word's settings or Task Scheduler, the move raises questions about whether Microsoft should prioritize improving Office's efficiency instead of relying on pre-loading. The update will initially roll out to Word in mid-May and later to other Office applications.

(www.pcworld.com)

Tech Startup Boost

Beyond NP: A More Intuitive Complexity Problem

2025-04-17

Beyond NP: A More Intuitive Complexity Problem

The author challenges the use of the Halting Problem as the canonical example of a problem harder than NP-complete, arguing it's confusing and unintuitive. While undecidable, verifying a "yes" answer for the Halting Problem can be done by running the program for a finite number of steps. A more easily understandable alternative is presented: moving a token on an infinite grid to reach a target point. This problem is PSPACE-complete in lower dimensions, but its complexity explodes with increasing dimensions, eventually reaching ACKERMANN-completeness, visually demonstrating a complexity far beyond NP problems.

(buttondown.com)

Development NP problems halting problem

Unraveling Predator-Prey Cycles: The Lotka-Volterra Equations

2025-04-13

The Lotka-Volterra equations, also known as the Lotka-Volterra predator-prey model, are a pair of first-order nonlinear differential equations often used to describe the dynamics of biological systems where two species interact, one as a predator and the other as prey. The model assumes prey have unlimited food and reproduce exponentially unless preyed upon; the predation rate is proportional to the rate at which predators and prey meet. Predator population growth depends on the predation rate and is affected by natural death rate. The model's solutions are deterministic and continuous, meaning predator and prey generations continuously overlap. The Lotka-Volterra model predicts fluctuating predator and prey population numbers and reveals characteristics of population equilibrium: prey equilibrium density depends on predator parameters, while predator equilibrium density depends on prey parameters. The model has found applications in economics and marketing, describing dynamics in markets with multiple competitors, complementary platforms, and products.

(en.wikipedia.org)

AI Lotka-Volterra equations predator-prey model

Debugging Brake Lights with a Vibrator: A Hacker's Tale

2025-09-24

Debugging Brake Lights with a Vibrator: A Hacker's Tale

The developer behind BrakeBright, a motorcycle brake light enhancement, details his journey to eliminate false positives. Initial attempts using averaging and low-pass filters failed to fully address brake light flickering caused by road bumps and engine vibrations. He then switched to median filtering, adjusted sampling times, and added jitter to prevent synchronization with engine pulses. Ingeniously, a repurposed vibrator simulated real-world conditions for testing, leading to the addition of a smart debounce mechanism that effectively solved the problem. The story is filled with humor and unexpected turns, showcasing the developer's dedication to product refinement and user experience.

(bikesafe.me)

Hardware Software Algorithms Product Iteration

Apple's WebKit: A Deep Dive into Participation in Web Standards

2025-09-23

Apple's WebKit: A Deep Dive into Participation in Web Standards

This article presents a deep dive into Apple's participation in Web standards, using data and charts to illustrate Apple's lagging adoption and lack of collaboration on crucial Web APIs like Web MIDI, Web USB, and Web Bluetooth. The author argues that Apple frequently cites 'privacy and security' concerns to reject or delay these features, yet provides little evidence to support these claims. Instead, data suggests Apple primarily plays catch-up with other browsers, rather than actively participating in co-design. The piece challenges Apple's engagement in Web standards and hints that its actions may be tied to protecting its App Store's business interests.

(infrequently.org)

Development

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