The dawn of collective learning can be traced back the oldest known stone tools, discovered at Lomekwi 3 in Kenya. The creation of these tools required more than just individual innovation; it involved the rudimentary form of collective learning, where knowledge of toolmaking was shared within groups. This early transmission of skills not only enhanced survival and adaptation but also marked the beginning of cultural accumulation—a fundamental characteristic that would define human societies.

Collective learning is the 6th threshold in Big History. While they place it at about 200,000 years ago, I recrafted it as Trasendental Intelligence and moved it back to 475,000 years. Collective learning, likely started with cultural transmission and the making of tools is a good example. If you agree, then collective learning moves back to at least 3.3 million years ago.