Recorded history only goes back around 5,000 years, but humans have been around for 200,000 years. Could there have been highly sophisticated ancient societies of which no trace remains?
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You’d think that there would be a couple of trace points. Stainless steel is eternal. The high rates of extinction should be visible in the fossil record, the concentration of minerals should be visible. We are not without impact on the environment no matter what era it is. Absent any of that, the most likely case is that this is the first go around for us.
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