If mathematics is the language of nature... what is this? Won't help for retracements, perhaps for psychology...
http://gottabook.blogspot.com/2006/04/fib.html
http://gottabook.blogspot.com/2006/04/more-fibbery.html
http://gottabook.blogspot.com/2006/04/fib.html
http://gottabook.blogspot.com/2006/04/more-fibbery.html