Do you know how a key works? Do you really?

When I watched this video (over and over) I had one of those “Boy, humans sure can do some pretty neat stuff sometimes” moments. You know, one of those cheerful 1950s moments.

The most brilliant things are often brilliantly simple, and it turns out a key is no different.

how a key works

Your mind is very lucky, because it just got blown. I saw this first on Neatorama, and you can see the original YouTube version here.

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