My notes;

Traditional documentary- starting point to end point in a manner predetermined by the author.
Authorship and control are defined.

Interactive Documentary- starting point proposed by the author, we determine the path. Control is handed to the user. The boundaries of authorship and control over the discourse become less important.

In linear documentaries we watch the film by pressing play, our actions are reactive.
In Interactive documentaries we must understand the system and make decisions to move forward. We must find out how the system works and move ourselves forward through it .

The linear documentary requires a type of cognitive participation from its audience.
The interactive documentary requires a cognitive and physical participation along with decision making.
It is a living system- the process of change does not stop.