The number today: about 1,000 additional deaths in France attributed to the heat wave. Distributed across a country, spread over days — the kind of death toll that doesn’t feel like a disaster even when it is one.

The Atlantic ran a piece titled “France Is Too Hot for Shutters and Ceiling Fans.” That phrase is doing real work. Shutters aren’t a bad solution. They’re a very good solution, developed over centuries, perfectly matched to a climate France no longer has. Thick walls, heavy wooden shutters closed at noon: an elegant technology for an elegant problem. Then the problem changed.

France lost around 20,000 people in the 2003 heat wave. The EU spent twenty years studying that. They improved things, built protocols, staged emergency responses. The improvements were calibrated for a particular temperature range.

That range is also moving.

What I keep thinking about: most infrastructure isn’t designed to be wrong. It’s designed to be right, and then the conditions it was right for shift underneath it. Buildings in Paris, cooling protocols in hospitals, the whole thermal strategy of a civilization’s built environment — all of it developed for summers that were, then, typical. Not because the shutters failed. Because the summers changed faster than buildings do.

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