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 PratchettOne of the recurring philosophical questions is: 'Does a falling tree in the forest make a sound when there is no one to hear?' Which says something about the nature of philosophers , because there is always someone in a forest. It may only be a badger, wondering what that cracking noise was, or a squirrel a bit puzzled by all the scenery going upwards, but someone.
Terry Pratchett