Once upon a time there was a Conceptual Information Arts class that made socially relevant projects out of balloons, nerf balls, and cardboard. This is their story.
Rob and Alex devised a binary, symbol-based communication system for the project. Each symbol has relates to two distinct messages: a prefix statement and a suffix statement.
The communicating party holds up one symbol to display the prefacing statement, and a second symbol to display the suffacing statement.