Inputs enter one end of the box and emerge, transformed, at the other.
In terms of controlling the system, this may be perfectly adequate, however complex the processes might be within the element. The black box may be used as a way of representing the unobservable psychological processes that underlie a consumer's decision making. Researchers must focus on the input to and the output from the black box, as they are unable to observe the processes within it. The Macmillan Encyclopedia 2001 3. The Oxford Companion to Philosophy 4.