Black Box
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.
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Famous quotes containing the words black and/or box:
“But who would rush at a benighted man,
And give him two black eyes for being blind?”
—Thomas Hood (1799–1845)
“Appeal. In law, to put the dice into the box for another throw.”
—Ambrose Bierce (1842–1914)