1) The document discusses the coevolution of technology, cognition, culture, and organizations in humans over millions of years, from tool-using savanna apes to today's socio-technical organizations.
2) Around 5 million years ago, climate change forced forest-dwelling apes out of East Africa, selecting for increased brain capacity and cultural adaptation on the savanna. Tool use and social cooperation allowed hunting and scavenging of large prey.
3) By 3-2 million years ago, hominins' competitive scavenging and hunting reduced other carnivore populations in East Africa, establishing hominins as top carnivores. The spread of tool-using hominins like Homo erect