The Low‑Cost Water Filter That Doesn’t Filter Anything — How Fake Filters Put Families at Risk
It’s easy to feel like you’re doing the right thing when you buy a water filter—especially a cheaper one that ...
Sunday, April 19, 2026
Tag: filter
The most expensive thing about growing up poor isn’t what you couldn’t afford. It’s the decision-making architecture it installs, where every choice runs through a scarcity filter that adds cost to options other people experience as free.
Sendhil Mullainathan, a Harvard economist, spent years studying what happens to cognition under resource pressure. In one of his most ...
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