Growing stronger by breaking down.
How does that work?
What if, instead of hardening to protect, we let something weaken, and in doing so, made it last longer?
That’s the counterintuitive principle behind the atmospheric re-entry capsules of the asteroid probes Hayabusa and Hayabusa2. Faced with the intense heat of re-entry—over 10,000°C—these capsules didn’t resist. Instead, their heatshields cooled themselves by gradually evaporating, just like sprinkling water on hot summer streets. In softening, they protected what mattered most inside.
A similar principle is found in yakisugi—charred cedar used in traditional Japanese houses. By deliberately burning the surface of cedar wood, it becomes carbonised, suppressing rot and increasing durability. Compared to standard siding materials, which last around 15 years, yakisugi walls can last 40 to 50 years, resisting moisture and insects alike. This is resilience through decay—a quiet strength born from knowing how to endure.