👉 Non-changeableness, also known as "non-continuity" or "non-controllability," is a concept in mathematics and physics that describes a property of a system where its behavior changes abruptly at some point. This phenomenon can occur due to various causes such as external factors (like forces), internal processes within the system, or even physical laws. In mathematical terms, non-changeableness occurs when the change in one variable does not match the change in another variable. For example: -