Knowing the “what” and the “how” of the universe gives us enough information to begin building the model. We know that the model should capture cause and effect. So we want to model to describe what happens when something happens. Let’s call something happening an “Action”, and what happens an “Effect”. Our model should somehow connect Actions to their Effects, so there will be some sort of equation between them. We also feel like superposition is fundamental, so that means we feel like there is mixing. What are we mixing? It appears that we are mixing Actions and Effects. So we want to make a model that describes the relationship between our actions and their effects in a way that allows actions and effects to be mixed or combined. 

Linear systems of equations (matrices) fit this requirement perfectly. Superposition is a native property of linear systems. We will create a matrix of actions and their effects to define the “what” and “how” of the universe. If we focus on the “what” and “how” of a person, we can localize the model to that person. We will call this the person’s “Action Matrix”.