Why responsible? EvG 2002

In 2002 Ernst von Glasersfeld wrote in his obituary for Heinz von Förster:

• Heinz put the new view into a nutshell: «Objectivity is the delusion that observations could be made without an observer.» Instead of worrying about an inaccessible external reality he focused attention on the world we build in the course of interactions with others in the domain of our experience. 
• Though this experiential world is a social construction, it is also individual because each constructs it according to his or her own experience. And because there is always more than one way of constructing, we are all responsible for the world in which we live.
• In Memoriam H.v.F., http://www.oikos.org/foerster.htm