There is a large gap between the accomplishments of humans and chimpanzees, which Yudkowsky attributes this to a small architectural improvement
Based on my recent thinking, the big amplifier may have been improvements in communication capacity, making human groups more flexible and effective learning networks than had previously existed. The capacity of individual brains may not have mattered as much as is usually thought.
This caught my eye:
Based on my recent thinking, the big amplifier may have been improvements in communication capacity, making human groups more flexible and effective learning networks than had previously existed. The capacity of individual brains may not have mattered as much as is usually thought.