Writes about how Steve Yegge's concept of a very expressive "folding language" relates to his own programming language, Ioke (he quotes someone saying that Ioke is an infinitely-foldable language). I still do not know what Ioke has over LISP, especially one like PLT Scheme.
You can't change the way lookups happen at runtime in Lisps. In Ioke (and Io), you can modify the proto chain as the application runs. You can also add and remove slots of objects. You can't add and remove variables from a closure in any Lisps that I am aware of.
