A marionette could be seen as a bridging system, a connection between two different systems.

Traditional between a person and a puppet where the puppet player causes, by moving the controls following his intention, an animating effect on the puppet. Because of the connection between a living and a non living organism the cause and the effect remain a one way system with a forced effect.

It would be interesting to use the principle of a marionette, bridging two living systems and creating an adaptive system with an unpredictable result.