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Worldbuilding

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    $\begingroup$ Medival humans had no idea how old the human civilization was... $\endgroup$
    – AlexP
    Commented Apr 16 at 11:49
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    $\begingroup$ Even obvious fossilized plants that were found even centuries after what we consider medieval were explained away. Ex fossilized ferns were thought to have grown in the rock, not just by joe pesant, but scholars. They may be aware of the artifacts if they survive, but what they would surmise what they were would be as random as anything you could imagine. $\endgroup$
    – Gillgamesh
    Commented Apr 16 at 12:38
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    $\begingroup$ You don't really say what the peak population was of these people. nor how long these people lived. population of 10 M over 100 k years won't leave as much footprint as 1 G pop over 500 k years.That is you need to decide what is the population curve over time. The fossil footprint is proportional to integration of that population curve. Compare with dinosaurs that had millions of pop over many tens of millions of years. $\endgroup$
    – Gault Drakkor
    Commented Apr 16 at 20:05
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    $\begingroup$ A civilization capable of landing in the moon can't be wiped out by a meteorite, unless it is an almost complete destruction of the planet. A meteorite such as the one that's credited with the extinction of dinosaurs would cause mass casualties, but we'd survive. Even if cultivating plants with articifially iluminated crops and hydroponia could only sustain a few hundred million humans on the planet, rather than billions, we would carry on and rebuild. There are very few natural disasters that could wipe us completeley, and most of them would also erase any material remains as well. $\endgroup$
    – Rekesoft
    Commented Apr 17 at 9:37
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    $\begingroup$ Zuckerberg left the chat $\endgroup$
    – Alastor
    Commented Apr 17 at 12:19