The wheel is one of the most ancient of human inventions. The name of its inventor is lost for ever. That person could never have suspected that the transcendental number pi is implicit its shape.
Since the nineteenth century, after the advent of the Industrial Revolution, the wheel has come to pay an ubiquitous role in civilization.
Now, for more than a century and a half, there has not been a moment when all the wheels of the world have remained stopped turning. At every minute of the day, every day of the year, hundreds of thousands of wheels have been running machines and driving vehicles. All wheels will cease to whirl only when civilization breathes its very last on planet earth.
We are not aware of any wheels, turning or still, elsewhere in the universe.
May 18, 2013