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Civilizations around the world definitely acquired similar technology with suspicious timing, but the common factor doesn't need to be humans. One theory I'm f

Civilizations around the world definitely acquired similar technology with suspicious timing, but the common factor doesn't need to be humans. One theory I'm fond of is river deltas. The major ones all formed around 7,000 years ago (see https://www.youtube.com/watch?v=A47ythEcz74 https://www.youtube.com/watch?v=A47ythEcz74) as a geological result of the end of the ice age. After humanity spread to the Americas during the ice age, the end of the ice age seems to have created the conditions necessary for agriculture to flourish. Once you have agriculture you get cities, writing to track harvest numbers, pyramids from laborers working in the off season, and metalworking from craftspeople .

singularity2001 5y ago
Suspicious timing is a good term. As far as I know the 4000 years of development which preceded the Eurasian bronze age are absent in america (tokens, cold hammering, accounting, step by step increases in architectural complexity), even though agriculture must have been part of a much earlier package or human condition as you said. Wooden idols and totems go back to ice age times, I give you that.