The great storyteller Aesop told a tale about an enterprising group of mice who set out to solve a business problem. These mice had been troubled by a particular cat living in “their” house that kept them from their goals of eating cheese and gnawing on the furniture. Because the cat was stealthy, the mice couldn’t hear her coming. After much deliberation, one of the younger mice (who was much more technologically inclined than the others) put forth a rather grand , but simple solution.
All the mice had to do, he explained, was to attach a bell to the cat so that when she started to move—they would hear her and have time to escape.