The three consideration, that affect the the delivery and outcomes of System 50:50

1. Number of players
2. Ratio of `freeplay` to `tacet` time on the chess clock faces.
3. Duration of the piece

Refer to the video, for more detail, a text summary will be uploaded here soon.

System 50:50 is supported by forums in the Improvisers Networks discussion board

The forum is called System 50;50 States, statements and research - URL LINK

The topic therein  5 `Density index` or sound mass - URL LINK - Topic ticket number T1205.