Open Pandora’s box.
Open Pandora’s box.
The phrase 'Open Pandora’s box' is derived from Greek mythology. According to myth, Pandora was given a box (though in actuality, it was a jar) and was told never to open it. Curiosity got the better of Pandora, and when she opened the lid, all the evils that the box contained were unleashed into the world, only leaving hope inside once she managed to close it again. In modern usage, to 'Open Pandora’s box' means to initiate or create a situation which will lead to multiple unforeseen and uncontrollable problems, just like opening a metaphorical box that releases extensive difficulties that were previously hidden or contained.
Sharing the secret will open Pandora's box.
Sharing the secret will cause many problems.
Discussing that topic will open Pandora's box and lead to endless arguments.
Discussing that topic will cause endless arguments.
Introducing new policies without proper research can open Pandora's box of unforeseen issues.
Introducing new policies without proper research can lead to many unforeseen issues.