
Franz Reichelt’s Eiffel Tower Jump: The Parachute Was Big Enough
Franz Reichelt's Eiffel Tower jump killed him in 3.4 seconds. His parachute suit was close to the right size. The way it opened never could be.

Franz Reichelt's Eiffel Tower jump killed him in 3.4 seconds. His parachute suit was close to the right size. The way it opened never could be.

The Tsar Bomba yield everyone quotes was never detonated. Swapping lead for uranium halved the bomb and cut its fission output by 97%.

The Kola Superdeep Borehole stalled before the money ran out: at 180°C the granite went ductile and sealed the hole around the drill.

The Vela Incident's bhangmeter was 41-for-41 on real nukes before 1979's double flash. Its optics, more than the spies, keep the case disputed.

Challenger's coldest prior flight had its O-rings at 53°F. On launch day the failed joint was estimated at 28°F, about 25 degrees colder.

Thomas Midgley's leaded gasoline beat ethanol because it could be patented. Better combustion chemistry had little to do with it.

Quantum error correction threshold theorem: why Google's Willow gets more reliable as it scales, while near-threshold chips don't.

Intel's glass core substrate is not in Clearwater Forest, which uses organic substrate and EMIB. What ECTC 2026 showed, and why glass is years away.

GitHub Copilot code review's new Agent Skills and MCP support went GA on July 29 — and it quietly hands PR governance to whoever runs the skill server.

Everyone's cheering GPT-5.6 Sol's 750 tokens per second. They're missing it: wafer-scale inference means OpenAI is quietly retiring the GPU cluster for its frontier model, and rewriting the physics of the AI data center.

Everyone is cheering co-packaged optics for saving power. They are missing the real story: the pluggable transceiver, the most-swapped part in any AI data center, is being quietly executed.

Webb's latest data on interstellar comet 3I/ATLAS reveals a 12-billion-year-old cosmic visitor carrying deuterium 30 times higher than any solar system comet — and chemistry unlike anything we have ever known.