History a "fittness" test?

From the beginning of human existance man has found a way, through technology, to leave his mark on this planet. From the earliest cave paintings to the scrolls that the books of the bible were orginally written on, and one thing has remained constant -- man's view that knowledge should be shared and passed on. The mediums of the past have been something that will survive for an extended period of time (unless something horrible and usually man made happens i.e. the fire of Alexandria). By passing on information in this way, men have left clues not by what they wrote or drew on the medium but through the medium itself, creating and adding to the context of the records. The types of dyes or paints used to create the cavepaintings in Africa left clues to what plants and animals were available to make them colors from, the areas where the paintings were found are clues to early human migration (and therefore animal migration) patterns, and in areas that are now arid (I am thinking of the white lady cave painting in Nambia speicifically) it provides clues to the evolution of the landscape. Through out history similar questions can be answered through the examination of the media from various time frames. But what about today's media, what if (BIG WHAT IF COMING!) all the crazies who say some castrophe is coming that will destroy much of what we know? Most of today's media is digital and I don't think it will survive an meteor hitting the planet. Information on CD, DVD, VHS (remember those?), and stored on our hard drives needs a human to access it with another piece of technology. Unlike the cavepaintings, scrolls, books, and other media of the past which only needed the human eye and possibly some understanding of the language and/or alphabet, today's media needs a device that can interrpret the code that we translated our information into. Years of knowledge could be lost if the understanding of a few peices of technology disappear. Scary.
So What got me thinking about this? Well you can thank Allan Kaprow and his article "Happenings' in the New York Scene." After reading this I started thinking that there is probably no way to acurately record a "Happening" even if you film it there is no way to capture every aspect of the happening since it has so many variables and "artists" involved. If you can't record a "happenings" and study it (here comes the scientists in me brace yourself) is it of any value? The knowledge is there for 1 breif moment in time and cannot be recreated or built upon, so it important? OK now here really comes the scientist.... If we apply the theory of Natural Selection to english (or as some of you may know it as "survivial of the fittest") Then we must look at a text or work and evaluate its "fittness." Fittness in science refers to how many surviving offspring an organism has that also reproduce and pass on genes, and so on. So if an organism's genes survive for 10,000 generation it was a very "fit" organism. Well lets get back to english. Plato, Marx, Artistole, have very "fit" texts and theories we have been learning from them for generations, surviving cavepaintings and scrolls are also "fit" because we are continuing to learn from them. But Happenings? In 50 years will be still be learning from them or will they disappear for our knowledge? If we can't record them and continue to learn from them I would say they have a fairly low "fittness" and therefore are doomed possibly with several other forms of media that we presently use.
*end rant*