great job digging up a reference! you must be a bot! :)

I read it in a book on AI, unfortunately that aisle in my library is inaccessible due to piles of obsolete crap (I wish I were kidding).

But hope springs eternal and if I get back and find it I will return here and add its deets to see if it was published before or after the SI article.

got to help future agents from going astray ...