Conversations and state See also: Paper Trail - presented as a a student project The basic model of the web is a world of information. Theoretically, a mapping between URIs and representations of the resources they identify, and experientially fro a person a space one can navigate. Interestingingly, trends at the leading edge of user interface development, and at the semantic web development both point to a world which uses a different model. Human interfaces are moving from screens to conver...