This article mentions Euler's identity. This mathematical concept was mentioned also in a recent episode of "Person of Interest" - a series that Ernest brought up in the 3rd hour of today's broadcast. That's where I heard of Euler's identity. Likewise, I first heard of Fibonacci in a math-centered tv series starring Fred "Herman Munster" Gwynne. How does an an eat an elephant? One bite at a time. So, these bits and pieces seem to stick . . . . DC Treybil