capable of understanding higher level intent and direction. From this understanding and its perception of its environment, such a system is able to take appropriate action to bring about a desired state. It is capable of deciding a course of action, from a number of alternatives, without depending on human oversight and control, although these may still be present.
one that perceives its environment and determines if this affects its goals, and it takes action to ensure as far as practicable (and safe) that its goals will be achieved. It reasons about its course of action from a number of alternatives, to achieve these goals without recourse to human oversight and control.