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 Helene Finidori presented Pattern Literacy in Support of Systems Capability at INCOSE IW2020 by Stefan Blachfellner 7 years ago 20th – 23rd January 2018. INCOSE International Workshop, Jacksonville, Florida, USA by Stefan Blachfellner 9 years ago COVID Pop-up Hub by Judy Al Saman 5 years ago