Month: November 2025

Forgotten Science
November 18, 2025

The Ideas We Left Behind – But Still Use Every Day

Imagine you are in an old library on a rainy evening. The main aisles are full of famous names: Newton, Einstein, Darwin, Curie. Their books are bright, clean and frequently borrowed. But then you turn into a quiet corner, where dusty volumes rest on high shelves. The names on their spines are unfamiliar. The pages are yellowed. The ink is fading. Inside those forgotten books […]

Forgotten Science
November 8, 2025

Phlogiston: The Beautifully Wrong Theory of Fire

• Phlogiston (17th–18th c.) posited a fire‑like essence released in burning/roasting. • Collapsed under mass gain in calcination and oxygen’s discovery; replaced by oxidation. • Left durable assets: quantitative balances, gas studies, and a caution about metaphors that feel right. 🔥

Turning Points
November 7, 2025

Blameless Postmortems: Shipping that Learns

• Blameless postmortems shift focus from who failed to what the system allowed. • Roots in aviation and safety science (Reason, Dekker); tech popularized via Google SRE. • Value: faster recovery, better design, higher trust; risks: performative rituals without follow‑through. • Add action tracking, owner, due dates, and review loops.

Turning Points
November 6, 2025

Goodbye, Leaded Gas: A Public‑Health Turning Point

• Tetraethyllead (TEL) added in 1920s to stop engine knock; mass neurotoxin. • Catalytic converters (1970s) and regulation drove phase‑outs; U.S. ban for on‑road gas by 1996; global near‑elimination by 2021. • Outcomes: lower blood lead, crime‑rate correlations, cleaner air; future focuses on legacy soils, aviation gas, and battery recycling. 🌍

Lost Inventions
November 5, 2025

The Optical Telegraph: France’s 18th‑Century Internet

• Claude Chappe launched a tower network in 1790s France; messages hopped 30 km at a time. • Mechanized shutters/arms encoded alphabetic codes; operators relayed in minutes. • Killed by electric telegraph (wires, all‑weather) and labor cost; lives on as naval semaphore and in HCI metaphors. 🏰📡

Language & Symbols
November 4, 2025

Morse Code: The First Global Digital Language

• Morse mapped letters to short/long pulses—a human‑parseable binary. • Born in the 1830s–40s with Samuel Morse and Alfred Vail, optimized by letter frequency. • Powered news, finance, railways, and distress signaling (⚠️ SOS). • Lives on in amateur radio, assistive tech, and aviation IDs; teaches compression & latency thinking.

Forgotten Science
November 3, 2025

Caloric Theory: The Useful Wrong Turn in Heat

The Caloric That Melted Away: How a Fictional Fluid Heated the 18th Century Before energy and entropy reigned, scientists pictured heat as a fluid—caloric—that flowed from hot bodies to cold, conserved like water in pipes (see Caloric theory). The model was wrong; it was also productive. It guided apparatus design, inspired Sadi Carnot’s engine insights (1824), and set the stage for thermodynamics. 🔥

Forgotten Science
November 2, 2025

Phrenology: The Beautiful Wrong Map of the Mind

Phrenology: The Map That Never Was In the early 1800s, Franz Joseph Gall and Johann Spurzheim popularized phrenology—the idea that mental faculties live in discrete brain “organs” whose development bulges the skull. Practitioners palpated heads, read bumps, and claimed to diagnose character, talent, even criminality (see Phrenology). 🧠🪨

Tech Culture
November 1, 2025

Feature Flags: The Safety Switch of Modern Software

Feature Flags: Shipping Without Fear Feature flags let teams deploy code dark and turn it on later for chosen users. That simple ability—decouple deploy from release—changed how software moves. Done well, flags are safety rails for experiments and rollouts; done poorly, they’re a tangle that slows everything (see Feature toggle). 🚦