Between the now unstoppable climate crisis, never ending power struggle of nations, and our technological immaturity (that I've outlined in the post "Is humanity a self-terminating system?' ), it is hard to argue for a non-zero chance of survival of human civilization, along with 50-95% of the rest of the species on planet Earth. So perhaps, it's worth to take a look back, and do a little retrospective, see how did it all end up the way it did, perform an autopsy on another body that fell victim to the Fermi Paradox. Our earliest traceable human-like ancestors is said to be Ardipithicines Ardipithecus, who appeared around 5 million years ago, or around 99,9% into Earth's existence. In a group of 15 difference human-like species, perhaps most notable ones were Homo Habilis, who appeared 2 Million years ago, they were the first ones to start making tools, then Homo Heidelbergensis, who appeared 700 thousands years ago, and were making various structures, like shelt...
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