Evidence of Advanced Tech 40,000 yrs ago

I have this theory that there have been multiple civilizations on Earth, that have either achieved space travel or were nearly wiped out by an extinction level event. ;ss
Totally agree. I have always felt advanced people have been around a very, very, very long time on this planet. There are different ages of people written about and there has to be some truth behind those accounts. We are discovering buried or submerged structures all over the planet and finding more and more of them are pushing civilization dates farther back than previously thought. You also have to take into account remnants no longer around as they have been turned to dust so long ago. Rumors of an archive of lost knowledge has been said to exist somewhere in the world. Perhaps if that is true and finally located, we will learn so much more about our very ancient human ancestors or potential other advanced races that called this lovely blue rock their home.
 
The chalkboard seems to be getting full. Civilization will always advance technology at break neck speed and our dependence on it could spell our downfall. Every advancement unveiled adds another line to the board. Our daily lives require sleep and a reset from the grind. Imagine if we never slept and the days kept going and going and going. We would burn out, right? So with adding more and more to the chalkboard, how long before it has to be erased, washed and rewritten with a new piece of chalk? How many previous civilizations experienced the same fate? Different discussion (sort of) but did the same things happen on Mars and beyond? Remember there has to be a cosmic board as well that needs a fresh 'lesson of the day' or is it all part of the same one? Hurry and write it all down someone is reaching for the eraser as we speak. o_O Too late. Maybe next time lol.
 
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