Principles (页面存档备份,存于互联网档案馆) from the Heinz von Foerster entry at The Cybernetics Society (页面存档备份,存于互联网档案馆) Gooch, Sherwin, & Nordin, Hud, YouTube上的"High
Contemporary studies in systems and cybernetics. Kybernetes: The International Journal of Systems and Cybernetics, vol. 26, No. 3, pp. 250 – 251. Morris