Impossible cube ambiguity present in a Necker cube illustration, in which a cube is drawn with its edges as line segments, and can be interpreted as being in either of two different three-dimensional orientations. An impossible cube is usually rendered as a Necker cube in which the line segments representing the edges have been replaced by what are apparently solid beams. In Escher's print, the top four joints of the cube, and the upper of the two crossings between its beams, match one of the two interpretations of the Necker cube, while the bottom four joints and the bottom crossing match the
The Cube (film) getting out of the Cube. After the band leaves, Mr. Thomas briefly enters telling the Man that the "Rest Period" is over. A prisoner named Watson (Jack Van Evera) enters the Cube having escaped from his Cube. He notices that the Man hasn't been here for long while mentioning how his Cube had squares while the Man's Cube has rectangles. Watson tells the Man that he had to tell how many times has passed by making marks in his thumbnail which didn't work when he lost his thumbnails. Watson decides to return to his Cube to see if he left