A forgotten water heater tap led to an overnight leak, an unexpected ice rink, and a reminder that the real lesson isn’t about blame — it’s about designing systems that catch small mistakes before they spread.
A small, human slip led to a big, icy problem in a neighborhood in northwest China. After a woman forgot to turn off the tap on her solar water heater, water flowed unnoticed for nine hours — and overnight temperatures turned the street outside into an accidental skating rink.
In this episode of Mistake of the Week, we look past blame and shame to ask a better question: why did the system require perfect memory, instead of detecting the problem or shutting itself off?
It’s a story about water leaks, design flaws, and how small mistakes can spread when systems aren’t built to catch them early — along with practical lessons for our own homes about alarms, automatic shutoffs, and mistake-proofing everyday risks.
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My Favorite Mistake: Learning Without Blame in Business and Leadership