From the website:
The philosophical aim of VAP software creation [Delibera] was helping people understand informational materials through rich visual language and the opportunity for well-structured conversation. This was to be accomplished both through carefully designed computer mediated communication and through document design and access. The first goal was to create an immersive online environment utilizing good human-computer interaction principles and audio /video capability in order to make the program accessible to all participants, even those who are not tech savvy. If successful, this interface would help place the user in a “virtual agora,” a marketplace of ideas where they would experience conversations with others in a high telepresence setting. These goals have been pursued throughout the development stages of all our software efforts.
Delibera is developed and managed by Carnegie Mellon University’s Institute for the Study of Information Technology and Society (InSITeS), under the technical leadership of Stuart Easterling, with primary supervision by Robert Cavalier, and supported by funding from the National Science Foundation.