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Re:The Modern Mind May Be 100k Years Old (2016) by zozbot234 on Tuesday January 07, 2020 @02:28PM (#21983711)
> If humans has the same capacity for thought 100,000 years go as they have now, why didn't "modern civilization" develop earlier?

Why do you assume that it didn't? There's plenty of emerging evidence that even foraging humans had a fairly complex social organization, with "proto-cities" that functioned as ceremonial centers at the very least. That's circumstantial evidence that they did have "civilization" of a sort, and perhaps even "modernity".

Re:The Modern Mind May Be 100k Years Old (2016) by distances on Tuesday January 07, 2020 @03:35PM (#21984502)
/r/AskHistorians has a several topics on this theme (if it's possible there are older civilizations we don't know about). The consensus is that it's very unlikely.

E.g. https://old.reddit.com/r/AskHistorians/comments/b5yrmi/how_c...