In “Cutting Edge Training Developed the Human Brain 80,000 Years Ago” (ScienceDaily, June 22, 2011), we are told,
Advanced crafting of stone spearheads contributed to the development of new ways of human thinking and behaving, according to new findings by archaeologists from Lund University. The technology took a long time to acquire, required step by step planning and increased social interaction across the generations. This led to the human brain developing new abilities.Some 200,000 years ago, small groups of people wandered across Africa, looking anatomically much like present-day humans, but not thinking the way we do today. Studies of fossils and the rate of mutations in DNA show that the human species to which we all belong — Homo sapiens sapiens — has existed for 200,000 years.
But the archaeological research of recent years has shown that, even though the most ancient traces of modern humans are 200,000 years old, the development of modern cognitive behaviour is probably much younger. For about 100,000 years, there were people who looked like us, but who were cognitively and socially very different from us.
Isn’t this a creationist argument? That it happened suddenly somehow? In Journal of Human Evolution?
They get way with it by suggesting “the complicated crafting process likely developed the working memory and social life of humans,” instead of all the other things that probably mattered at lot. But the critical question, unanswered, is why? Thoughts?