I hope this isn't annoying - it is *very* off-topic, but I know some of you, like me, are non-coders with an interest in code, and I found this article to be an exceptionally interesting (long) read.
http://www.bloomberg.com/graphics/2015-paul-ford-what-is-code/
As far as I understand it, our friend TiddlyWiki has some genetic relationship to Lisp, about which the article says;
"Lisp blurs the line between code and data in the way it allows functions to refer to themselves. It works, but it’s a little much to ask a regular programmer to see the world as infinitely programmable."
Regards,
Richard