Paper on Weiss and Bertalanffy presented at the ISSS 2006 50th annual meeting Stefan Blachfellner 20 years ago At the ISSS 2006 (50th Annual Meeting) a paper by Drack and Apfalter was presented: Is Paul Weiss’ and Ludwig von Bertalanffy’s System Thinking still valid today? Related posts “Meaning“ did not emerge like a bolt from the blue by Stefan Blachfellner 10 years ago Wittgenstein Symposium by Stefan Blachfellner 19 years ago Alexander Laszlo at the “Educating our Future”-Conference by Stefan Blachfellner 8 years ago