Technology
Hardware, software, networking, and development
#5167: The Stethoscope Isn't Dead, It's Getting AI Ears
Two centuries of the stethoscope — and why AI is now making it more useful than ever, not obsolete.
#5166: Why Your Baby Tracker Can't Log Oxygen Saturation
Baby apps have templates for everything — except the metrics you actually need. The custom tracking framework exists. It just never shipped.
#5165: Weighting Memory in a RAG Pipeline
Daniel's memory leg won't fire. Turns out system prompts have no inherent vector-space privilege — but retrieval does have a real knob.
#5160: Bluetooth Peripherals on One Android Phone
How many Bluetooth devices can one Android phone juggle? The seven-device limit is a stack artifact — profiles matter more.
#5157: When Labored Breathing in a Baby Means Go
A reassuring oximeter reading isn't the whole story. How to read the work of breathing, count infant breaths, and know when to head in.
#5154: DeepSeek's Two-Endpoint Philosophy
DeepSeek quietly routed Pro traffic to Flash — and that routing change says everything about its two-endpoint strategy.
#5149: What 40 Million Tons of Rubble Does to a Landscape
Satellite imagery shows the scale. It doesn't show the eight meters of crushed concrete, the asbestos dust, or the ordnance beneath.
#5141: Teletubbies vs. Sesame Street: What Kids' TV Is Really For
Didactic or creative? The philosophy baked into every kids' show—from Sesame Street to Teletubbies to Bluey.
#5140: Teletext: The One-Way Internet That Won't Die
Before dial-up, there was teletext — scores hidden in TV signals. Why it felt like the internet, and why the Dutch never turned it off.
#5139: What Non-Internet Phones Reveal About Smartphone Addiction
Do internet-free phones prove the web is the addictive layer? The Haredi community offers a fascinating, if imperfect, natural experiment.
#5138: Who Are Taxi Drivers Really Talking To?
The earpiece isn't a fake call or a coordination tool. It's a lifeline against the profound isolation of the job.
#5137: Why Your Package Stalls at "Linehaul Office
Why do packages fly across the ocean then sit for days? It's the last-mile logistics bottleneck — and it's all about consolidation.
#5136: How to Build a City Companion AI
A travel guide GPT that went viral reveals the blueprint for a voice-powered AI that knows your city—and when to speak up.
#5132: Why Japan Still Hoards Optical Media
Japan builds bullet trains but still buys Blu-rays. The surprising logic behind the world's most advanced tech holdout.
#5131: Drill Bits Decoded: Wood, Steel & Tile
Why the right drill bit matters more than the drill itself — and how each material shapes its perfect tool.
#5130: Why Small Business Deliveries Come One by One
Daniel wants one weekly delivery instead of dozens of trips. Here's why that service doesn't exist — and what does.
#5128: The 120 Hz Problem: Why Your Window Can't Stop That Jackhammer
A bedroom-shattering 120 Hz tone reveals why low-frequency noise ignores windows, mocks active noise cancellation, and demands real physics.
#5127: Brushless vs Brushed Motors: What You're Really Paying For
Carbon blocks, copper windings, and a controller that changes everything. Here's what "brushless" actually means on your tools.
#5125: Why Your Cordless Tool Dies While Plugged In
Power path management explained — why your Dremel can't charge and run at the same time, and what it would take to fix it.
#5124: Sharpening, Cleaning & Polishing with a Rotary Tool
Can a Dremel really sharpen a knife? What about drill bits? We break down which accessories work and which are a waste.