Information is not quantifiable and and humans are not information processing machines. The organism is its world's history. When people communicate they do it on a common arena consisting of their previous interactions. The important thing is not what is being transferred but what is happening to the interceptor. Communication leads to increased concordance between the interactors.
All communication needs a background to which it can relate.
The communication also influences that background. The Autopoietic view of the world leads to an enactive model of user support. According to this model the user needs to have a virtual picture of how the system works, to be able to use and learn more about the system. The picture has to be multi-dimensional in order to allow the user to move to lower levels of abstraction without losing the higher ones. The model is called enactive because it implies an active learning process.