1. A method for designing a missile defense system architecture for intercepting a target missile whereby information and control represent dual and subjective properties of the system, the method comprising the steps of: specifying as a missile defense system objective localizing the target missile in space so as to be contained within the continually shrinking space or kinematic envelope of an intercepting missile; defining an information space as where the target missile can be and where it can go and a control space as where the intercepting missile is and where it can go; posing at least one question to an environment external to said missile defense system; using a missile defense system sensor asset to acquire information about said external environment in response to said at least one posed question; defining at least one question answerable by said missile defense system to take an action to effect control by said missile defense system over said external environment; using a computer to mathematically derive said missile defense system architecture based on the specified missile defense system objective, the acquired information from the at least one posed question and said controls effected by the at least one question answerable by said missile defense system; and using the derived missile defense system architecture to intercept the target missile.