If this is the book that's being referred to: http://www.amazon.com/Ruby-Programming-Language-David-Flanagan/dp/0596516177 http://www.amazon.com/Ruby-Programmin

If this is the book that's being referred to: http://www.amazon.com/Ruby-Programming-Language-David-Flanagan/dp/0596516177 http://www.amazon.com/Ruby-Programming-Language-David-Flanag.... then Flanagan's co-author was... Matz.