With the dawn of the 20th century, photography - like other arenas of art - moved past "the traditional function to mirror nature" and developed into new styles and movements. The cubist movement in Paris (1907 - 1920) was highly influential during the time period. The cubists, lead by Picasso and Braque, embraced Enlightenment ideals and abandoned traditional one-point perspective. This Picasso cubist painting of normal dinner table decoration, entitled Carafe, Jug, and Fruit Bowl, serves as a good representation of the cubist style that fragmented ordinary images by considering them from numerous viewpoints simultaneously.
The cubist approach offers an interesting perspective (largely because it offers many perspectives at once), and it makes for art pieces with great character. However, to me, it seems fairly pointless. Cubism does not serve any greater purpose than to make us question what we see.