They're not /really/ connected, at least historically. But the author sees a reasonable progression in ease of use, while maintaining a lot of flexibility. And

They're not /really/ connected, at least historically. But the author sees a reasonable progression in ease of use, while maintaining a lot of flexibility. And the idea of starting with a forth-like system, building a lisp-like system with it, then putting a python-like syntax on top of it is very interesting.