Dear Bertold Bernreuter:

»» that means a pragmatic way of widening the dialogue, understood in a twofold sense: first, to extend a particular dialogue, for example by inclusion of further members, and, second, to create new dialogues.

I agree; that's at least one direction where to go (and think) further. But it will be hard work...
Many thanks for your comments.

Sincerely,
Marc Bouchard