Taking a cut at a few terms that parse themselves. The path looks like this. A person types: ep> foo bar baz This sentence is tokenized into three terms: foo, bar, and baz. All three are dispatched simultaneously. Each term can communicate with all the other terms (or possibly only some subset). They do a "handshake" where term foo says "I'm a verb or a noun" and term bar says "I'm only a verb" and term baz says "I'm only a noun." Since a noun node must be adjacent to a verb node, the AST quickly settles into noun, verb, noun (A graph like this: o-o-o), and then the functions execute.