ostyrbar
Ostyrbar is a term used in Swedish-language engineering and control literature to describe systems, processes, or agents that cannot be steered toward a desired state with the available inputs. In English-language writing, ostyrbar is typically translated as uncontrollable or unsteerable. The word is sometimes encountered in discussions of mechanical systems, robotics, and dynamic models to denote a fundamental limitation rather than a temporary failure.
In control theory, a system is controllable if its state can be driven to any other state
Beyond engineering, ostyrbar can be used in science fiction and media to describe devices, vehicles, or autonomous
See also: controllability, open-loop vs closed-loop control, Kalman criterion, dynamic systems.