"What is essential is invisible to the eye." St. Exupery wrote these lines in the Little Prince.
Almost 70 years later, I found a website that is dedicated to that proposition, the aptly named 99% Invisible.
99% describes itself as "a tiny radio show about design, architecture & the 99% invisible activity that shapes our world." The show is the brainchild of broadcaster Roman Mars.
99%'s episodes, (available as podcasts), are quite simply, beautiful, as well as startlingly thought provoking.
Take episode 15: "Sounds of the Artificial World" which comes in at under 5 minutes:
"Sounds" explains that our electronic gear, from your smart phone to your laptop, is actually completely soundless. But sound is added so that we get some audio feedback when we turn on a device or press a button.
There is actually a company that does just that - make sounds for devices.