To: RegulatorCountry; blam
Rupp from U Chicago postulated that extinctions occurred on a regular basis and had a grad student study the problem. The thing that got my interest was a post by Blam on the Hiatus in the spread of civilization after the Sargonite Empire which lasted about 300 years.
They found a crater in Iraq that could have some impact on this hiatus but I never followed it up.
To: Little Bill
Periodicity and near extinction level events would make sense of a lot of legend and certain religious prophecies.
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