Why would you think that? Documented history is documented history - aka proof - not myths!
Or do you think a 1000 years from now people won't belive the recordings of WW2 or 9/11 and consider them myths?
Well, your comparison of humanity remembering WW2 is incorrect and different than what i was talking about first off. When time passes by on the order of thousands of years, stuff can turn to legend and myth, not always, but a good bet that something can. Usually it happens in simpler times, such as before the medieval era. One great example is adam and eve. Adam and eve is a documented historical thing in the bible for how we came to be, but it's always questioned if it's true, and there's no way to prove it either. What about the flood with noah? Or better yet, the problems god and moses gave to the egyptians. Is it a myth that that frogs and locusts swarmed egypt and then fire from the sky came?
If something from several thousand years ago was recorded on stone or something with no other proof to offer that it happened besides some writing and surviving folklore, then you'll probably have something on the order of legend/myth. What about the epic of gilgamesh? That also documented a flood and a huge boat just like the story of noah. But, is say the epic of gilgamesh and the story of noah documented history (i mean two stories from two different cultures are backing up the flood...the flood could have happened, but what about that crazy ass big boat that held all of the animals and the last humans of the time)? People today would just consider them great stories. But, back then writing was the only way to document history really in ancient times. In the meantime time if there is other proof out there that some stuff actually happened, over thousands of years cities get buried, civilizations get conquered and changed, stuff gets lost, and even the geography changes. So it's really hard to find proof sometimes if it's impossible to find it to back up the story of noah, epic of gilgamesh, and the story of moses. I mean, they're really crazy stories when you hear them, and to actually try to imagine them as being real in todays modern day thousands of years later as compared to the day thousands of years ago when this **** did happen as told by these stories.
Are they stories or were they real? Are we largely misinterpreting them for the way people understood the world back then, or are we interpreting them fine? You can only get so far with research and unburying stuff, and science makes mistakes all the time as well. So stuff will remain skeptical for many people until a similar happening of a world flood happens again to compare with, or until time travel comes about. And their you might have legend/myth.
At least with science and research proving that the flood did happen isn't so impossible, along with finding the arc (i believe that was found already). But, i mean generally, crazy **** that happens, that may be on the order of unbelievable later, but if it can be figured out, it will astound people and give new respect for older stuff out there.
The ancients on the other hand if they survived the shivan onslaught 8000 years ago in the fs universe could very easily be in the same boat. And what about those vasudan prophecies in fs1 about the shivans after the shivans came? Speaking of which prophecies are gay as hell, they're always too obscure to be prepared for them or do anything about. And if you get a prophecy that has all of the information for when, where, and what happens, then that's something different called a prediction. Man i just hate prophecies in general, they're quite retarded in nature and perhaps even more for people to get wrapped up in them too