Phase-space formulation

Phase-space formulation is a way to understand how a system behaves over time. It helps us understand how a system moves through changes and how these changes affect the system. To explain this in a way that a 5 year old would understand, you could say that it is a way of looking at a system and seeing how it changes. It is like looking at a picture that changes over time and seeing how the picture gets more and more complicated as time goes on.