Interpretation? (SPOILERS)
There is soooo much to consider when watching this movie, even when leaving out the historical facts about the time period and setting. I'm interested to hear what some other people think . . .
I think it's all about society and chaos. The film begins and ends with historical footage of destruction and warfare which splices in with natural shots and tranquility, almost as if signifying that destruction is a way of nature and a common process. Within the movie, the two main characters indulge in their own spree of destruction until the end when we see their ultimate demise. In my opinion, they never escape the eye of society and government, even as they continue to ponder whether or not they truly "exist." The omnipotent typewriter entries at the end prove that they never really escaped existence . . . but now I'm rambling . . .