Complex sentence: Lyotard criticizes metanarratives such as reductionism and teleological notions of human history such as those of the Enlightenment and Marxism, arguing that they have become untenable because of technological progress in the areas of communication, mass media and computer science.
Split into simpler sentences: Lyotard criticizes metanarratives such as reductionism and teleological notions of human history such as those of the Enlightenment and Marxism. These have become untenable, according to Lyotard, by technological progress in the areas of communication, mass media and computer science.