Did you know a standard lock might have thousands of combination possibilities, yet yours might open someone else's door? How does a master key work such that it can open multiple locks without compromising security entirely? What makes lockpicking more of an art than a science, requiring skill and a deep understanding of how locks function? How can a particular ""jiggle-and-twist"" method sometimes allow a key to open unintended locks successfully? What surprising connections do locks and keys have with human ingenuity and security throughout history?

... we explain like I'm five

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