1. A system for independently observing and modifying activity in an actor processor, where the actor processor includes a memory, an input for receiving actor input information, an actor software state, and an actor hardware state, the system comprising an observer module including: a property-observing sensor for detecting and sampling a physical property of the actor processor and for generating an observation signal based on the physical property; an observer processor coupled with the property-observing sensor for receiving the observation signal, the observer processor operative to generate an observer output signal based on the observation signal.