A flaw in a component or system can cause the component itself or an entire system to fail to perform its required function, e.g., an incorrect statement or data definition

Engineering and physics
In engineering and physics, a physical system is the portion of the universe that is being studied (of which a thermodynamic system is one major example). Engineering also has the concept of a system referring to all of the parts and interactions between parts of a complex project. Systems engineering is the branch of engineering that studies how this type of system should be planned, designed, implemented, built, and maintained. Expected result is the behavior predicted by the specification, or another source, of the component or system under specified conditions. Sociology, cognitive science and management research
Social and cognitive sciences recognize systems in human person models and in human societies. They include human brain functions and mental processes as well as normative ethics systems and social/cultural behavioral patterns. In management science, operations research and organizational development (OD), human organizations are viewed as systems (conceptual systems) of interacting components such as subsystems or system aggregates, which are carriers of numerous complex business processes (organizational behaviors) and organizational structures. Organizational development theorist Peter Senge developed the notion of organizations as systems in his book The Fifth Discipline. Organizational theorists such as Margaret Wheatley have also described the workings of organizational systems in new metaphoric contexts, such as quantum physics, chaos theory, and the self-organization of systems. Pure logic
There is also such a thing as a logical system.
Tremor and rigidity, however, seem to be only partially due to dopamine deficits in the substantia nigra, suggesting other processes are involved in motor control. Treatments for hypokinesia often either attempt to prevent dopamine degradation by MAO-B or increase the amount of neurotransmitter present in the system.GABA and glutamate
The inhibitory neurotransmitter GABA and the excitatory glutamate are found in many parts of the central nervous system, including in the motor pathways that involve hypokinesia. In one pathway, glutamate in the substantia nigra excites the release of GABA into the thalamus, which then inhibits the release of glutamate in the cortex and thereby reduces motor activity. If too much glutamate is initially in the substantia nigra, then through interaction with GABA in the thalamus and glutamate in the cortex, movements will be reduced or will not occur at all.Another direct pathway from the basal ganglia sends GABA inhibitory messages to the globus pallidus and substantia nigra, which then send GABA to the thalamus. In the indirect pathway, the basal ganglia send GABA to the globus pallidus which then sends it to the subthalamic nucleus, which then disinhibited sends glutamate to the output structures of the basal ganglia. Inhibition of GABA release could disrupt the feedback loop to the basal ganglia and produce hypokinesic movements.GABA and glutamate often interact with each other and with dopamine directly. In the basal ganglia, the nigrostriatal pathway is where GABA and dopamine are housed in the same neurons and released together.