Little sleep, more productivity

The Wall Street Journal’s Melinda Black has an interesting piece in today’s edition entitled “The Sleepless Elite.” One to three percent of the population require less than six hours of sleep to function well. In fact, she points out that not only do these short sleepers function, but they are upbeat, tend to be thin and energetic.

Where did the patent term come from?

Tyler Cowen has an interesting post up, What determined the playing length of an audio CD? Turns out Sony wanted a smaller diameter CD at first, but soon settled on a 120mm diameter so that the 74 minute version of Beethoven’s Ninth Symphony (the favorite piece of a Sony VP’s wife) could fit on a single CD. Interesting story, but the 74 minute length, and corresponding physical diameter of the CD, is not really arbitrary.