This article is great and IMHO is an example of the internet at its best. The article author, who knew and understood the intellectual development of the book w

This article is great and IMHO is an example of the internet at its best. The article author, who knew and understood the intellectual development of the book where 'open recursion' was first used, explained, in the context of the book, exactly what the book author meant. Subsequently, we get the internet at less than its best when commenters quibble and squabble over terminology. Read the article and ignore the comments.