I BEGIN WITH THE END, AND A QUESTION. THOUGH IT SEEMS COMPLETELY OBVIOUS THAT SMART HUMAN BEINGS HAVE BEEN AROUND FOR A LONG TIME, WHY DO WE ONLY REMEMBER THE LAST 6000 YEARS?
To start with some generic thoughts, the earth wobbles every 25,620 years. There are 12 astrological signs of approximately 2020 years totaling 25,440 years. December 21, 2012, Lastly it seemed like rhe turning point in the Mayan Sun disk for the 25,620 year cycle has just occurred. So it would seem like 25,000 years or so plus or minus is a very significant time period for some reason, and could be more important than us having 4 seasons of Spring Summer Fall and Winter. This can also be looked at in a bigger picture of 6000+ years being Golden, Silver, Bronze and Iron Age.
The Bible - This seems the complete time period of what we remember, and if you have read it many times like I have you will know the significance in the beginning of the bull, then the lamb, then the fish. Ironically the astrological signs for Taurus, Aries, and Pisces correspond with these animals and only represent 25% of all the astrological signs and if all we remember is the last 6000+ years, we are pretty lose the this 25,620 year cycle I mentioned above. This would also place us in the Iron Age (Dark Age) in the Golden, Silver, Bronze and Iron Age scenario

Ancient Aliens - Though mostly unbelievable, the do reference the Sphinx facing the eats about 10,500 BC (specifically, Orion's Belt) being a reflection of the sky and the Milky Way at this date. This would place things like Plato's Atlantis, the end of the ice age, and the Biblical Flood all at the end of the Silver Age in the Golden, Silver, Bronze and Iron Age scenario.

Now addressing it from the Greek perspective there we 5 ages of man, of about 4000 years each this time adding a heroic age, each lasting about 5000 years each, or 25,000 years, very close to 25,620 year cycle mentioned above (so this fits). If only because the Greeks had the great flood coming about the same time the polar ice caps melted about 10000 years ago
- Golden age - When the deathless gods created the golden race of men
- Silver age - was said to be inferior in all terms to the golden race. They lived short lives because of their foolishness and at some point Zeus became so mad that he destroyed this silver race
- Bronze age - were strong and warlike, had weapons and armour of bronze. According to Theogony of the Apollodorus' Bibliotheca, the Bronze age was ended by the Deluge or the Great flood
- Age of Heroes - an honorable race of heroes, who were noble and respected the gods. Among them were also individuals with divine qualities, called demi-gods. Most of them died in wars such as Trojan war and Seven against Thebes.
- Iron age - the last race of man, called the iron race, where Hesiod puts himself in. It is a time of constant stress and labor. Morality is gone and men are constantly opposing each other, lying and seeding mistrust. It is a time where humans grow old quickly and Zeus is set to return one day to destroy this race
Mayan Calendar - supposedly came to the end of a 5th world, Hopi Indians say this as well, on ro about Dec 21, 2012 and adding up the numbers this age would have started 3114 BC or about 5126 years. Id we consider all 5 ages they would have lasted 26,275 years a little higher number than the 25,620 years the scientists define as earths wobble, but pretty darn close for cave men an women.
Egyptians - Probably the best documented pre-history, with the mathematics of the pyramids describing the speed of light, the circumference of the earth Then we have the Sphinx pointing directly east to a constellation that would of only aligned in 10,500bc (in remembrance of a better time?) make it almost to easy to imagine their might have been a gold and silver age that proceeded it.
Asian Religions - Suggest that they 25,000 year cycle has happened even more often. So this infers that the Golden, Silver, Bronze and Iron Age scenario has happened over and over and over again, but since we are in a world where if true, that we only remember the dark iron age, even starting to think about this being one big cycle we are doing over and over again is really hard for me to begin to comprehend.
So I end with the beginning and the Age of Aquarius, the beginning of the next Golden Age, the Biblical Rapture, and the Mayan's end of the Calendar Dec 21, 2012. If indeed we are living in the dark iron ages, and we left left the Age of Hero's as only a mythological stories from a previous age over 6000 years ago. Does that make the ending of Lord of the Rings have more meaning when Gandalf finishes off the task of ushering in the age of man. Does that give meaning to this statement "Trump is the modern day King Arthur"? Does that explain why we have had a technology leap in the last 100 years? Hell I do not know, I have just written this blog to help me fit some puzzle pieces together.
...but if it does have meaning and we are truly entering a new golden age, and all our memories are from a dark iron age (winter). We have no earth point of reference to understand that Spring is around the corner, and the brutal winter which we just experienced will change the world around us beyond recognition, or even our wildest imagination