It’s quite easy to accidentally overhear people talking downstairs if you hold an upturned glass to the floorboards and accidentally put your ear to it.
Terry PratchettSome humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH,' the paint wouldn't even have time to dry.
Terry Pratchett