High up in the North in the land called Svithjod, there stands a rock. It is a hundred miles high and a hundred miles wide. Once every thousand years a little bird comes to this rock to sharpen its beak. When the rock has thus been worn away, then a single day of eternity will have gone by.
With that beings a response to the following by the ever awesome xkcd’s Whatif .
How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?