Systems in which their behavior is fully prescribed by their initial conditions. In such systems, there is a one-to-one relationship between input and output (or a proportionality between the intensity of input and the intensity of output). Such systems demonstrate only quantitative change.
See Cybernetics, Determinism, Dynamical system, Dynamics, Equifinality, Isomorphism, Newtonian (or classical) mechanics, Newton’s laws of motion, Non-linear dynamics, System