Turns out that my moniker is totally appropriate. Thanks to Liz Kneen for calling my attention to the second this morning (I need to read Leon's textbook now, and learn chaos theory, and build that thing.)
First click on Mel.
"If a program can't rewrite its own code" he asked, "what good is it?"
Then click on Chua.
...a simple electronic circuit that exhibits classic chaos theory behavior... an ubiquitous real-world example of a chaotic system, leading some to declare it 'a paradigm for chaos'.