As I am running into a 404 here is the link, that worked for me:

http://www.amazon.com/Art-Memory-Frances-Yates/dp/1847922929...

Accidentally downvoted you; I thought people on HN interested in autonomous, decentralized systems not acquainted with Giordano Bruno should become so:

http://en.wikipedia.org/wiki/Giordano_Bruno

http://warburg.sas.ac.uk/index.php?id=446

"The Art Of Memory" by Frances Yates outlines the pathway of mnemonic and knowledge systems from alchemy to the Rennaissance, and is a comprehensive introduction to the life and work of Giordano Bruno, Ramon Llull and many other ancestors of our various technologies of memory.

http://www.amazon.com/The-Art-Memory-Frances-Yates/dp/022695...