Basic Notions – Disturbance or Perturbation

Basic Notions - Disturbance

Basic Notions – Disturbance or Perturbation Adding to the complexity of the example depicted above, should forces change their directions or magnitudes in a way that the total sum is not zero, the system will experience disturbance (or perturbation) and moves out of its original equilibrium state. In our example, let’s assume the addition of […]

Basic Notions – Variety and the Law of Requisite Variety

Basic Notions - Variety

Basic Notions – Variety and the Law of Requisite Variety To control—or manage[1]— anything, there is a need for something to measure it with; so as to control complexity, we need a measure to understand the size of a given complex situation. In Cybernetics, Ashby[2] introduces the concept of variety: “The number of possible distinct […]

Basic Notions – Feedback Loops

Basic Notions - Feedback Loops

Basic Notions – Feedback Loops For any control to happen, the system needs to have some sort of a sensor to detect, encode, and feed information from the environment or system itself into the system, some form of logic to process the information and compare it against a set of parameters (i.e., goals, targets) and […]

Basic Notions – Control

Basic Notions - Control

Basic Notions – Control Stafford Beer asserts that “control is an attribute of a system”[1], whereby identifying a system to be “in control” means that “it is ultra-stable: capable of adapting smoothly to unpredicted change.”[2] In other words, a system in control can maintain its equilibrium state, adapting to unpredicted changes. It follows that if […]

Basic Notions – Equilibrium

Basic Notions - Equilibrium

Basic Notions – Equilibrium Tapping into physics and Newton’s first law of motion, we know that “an object at rest will stay at rest, and an object in motion will stay in motion unless acted on by a net external force.” Therefore, as long as the forces imposed on an object cancel each other out, […]