Pandora's box is an artifact in Greek mythology. The container mentioned in the original story was actually a large storage jar but the word was later mistranslated as "box". It contained sickness, death and many other unspecified evils which were then released into the world. From this story has grown the idiom "to open (a) Pandora's box", meaning to do or start something that will cause many unforeseen problems.

In the version of the 16th century humanist Erasmus, the box is opened by Epimetheus, whose name means 'Afterthought' – or as Hesiod comments, "he whom mistakes made wise".

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