In science and engineering, a black box is a device, system or object which can be viewed solely in terms of its input, output and transfer characteristics without any knowledge of its internal workings, that is, its implementation is "opaque" (black). Almost anything might be referred to as a black box: a transistor, an algorithm, or the human mind.
The opposite of a black box is a system where the inner components or logic are available for inspection, which is sometimes known as a clear box, a glass box, or a white box.
Famous quotes containing the words black and/or box:
“Chastity prays for me, piety sings,
Innocence sweetens my last black breath,
Modesty hides my thighs in her wings,
And all the deadly virtues plague my death!”
—Dylan Thomas (1914–1953)
“The quality of American life is an insult to the possibilities of human growth ... the pollution of American space, with gadgetry and cars and TV and box architecture, brutalizes the senses, making gray neurotics of most of us, and perverse spiritual athletes and strident self-transcenders of the best of us.”
—Susan Sontag (b. 1933)