substances

During the presentation at Haip festival Virtual Entity's digital world division into four substances was put under question. Basically the whole lecture was divided in two segments: from a general presentation of the project and its current state, the focus went on substances as relevant categories, including relative problems and possible solutions to those. These four substances are, in the specific, Text, Audio, Video, and Image. These are somewhat echoing Aristotle's four elements constituting earth, and the celestial globe.
An interesting discussion started, here is a recording of the stream in mp3 or ogg.