A " Pandora's box " is a metaphor in our modern languages, and the proverbial phrase refers to a source of endless complications or trouble. Has your curiosity ever got you into trouble? Have you ever been so desperate to know a secret that you took no notice of a warning? All through history there. It really was a jar but thanks to a mistranslation, we'll probably forever refer to the legend as Pandora's “ box.” It is speculated that the jar was.