In non-trivial machines an internal logic changes the operator with every operation (von Foerster & Poerksen, 1999, p. 58). If only one step is missed by an observer, the reaction of the machine becomes unpredictable, even if the principle of the program is known.
Such a machine is
- synthetically deterministic, as it can be constructed easily,
- history dependent, because every operation changes the operator,
- analytically indeterminable, because of the non-linear equations
- analytically unpredictable.