defintely matrix! descartes' analyzation of his dream world vs. real world was quite similar to "the matrix" vs. the real world. paragraph 5, meditation 1: "but i cannot forget that, at other times i have been decieved in sleep by similar illusions; and, attentively, considering those cases, i perceive so clearly that there exist no certain marks by which the state of waking can ever be distinguished from sleep..." the watchowski brothers, who wrote the matrix, heavily researched texts of many philosophical sorts beforehand. maybe they came across these readings!