A map came up on my Facebook news feed: “A coast-to-coast picture of America’s cacophony of sounds”. It was drawn up by the National Park Service to chart the summer soundscape of the nation. I gazed upon this map for four minutes and thirty-three seconds. Then I re-posted it. With a click of the mouse, body and mind dropped away. And then the collie barked. He barked and he barked and he barked. He did not appreciate the mess left on the floor.