Could be if previous revisions of humans was as or maybe even more self destructive, then again if the previous revisions had the same perspective on their garbage as we have there really should be more traces of them.
Thats just it !
There are traces of them - but people dismiss these traces !
The evidence is there , but what do you do when people stick their heads up their collective asses ?
Or actively try to dismiss or discredit evidence for such ... ( Advanced cultures in the past ) .. There is evidence all over the world .
There was a really interesting story from South America where a scientist proved ( ? ) that there was a culture going back much earlier than current BS says ...
Apparently they were carbon dating to 15,000 years or more ...
They have been banned from excavating the site , funding has stopped , and she has been frozen out from the mainstream academia .
So there is this push from the top to stop anyone proving that civilization began much earlier than 5 or 7 thousand years ago ..
Unfortunately sites all over the world are being dated to 12 or 15 thousand years , and you just don't hear much about that ...
And the sites that might go back even further than 15 thou are really not getting any publicity or funding or support , if anything they are being trivialized and simply ignored by the mainstream scientific community .
One simply has to wonder why ? What are the powers that be so afraid off ?
Is it that we humans already reached for the stars and failed ?
Is it that history repeats itself over and over because humans keep failing to learn from the past . Perhaps because we are doomed to fail again .. Because as a collective we are as stupid as a rabbit plague !