Also eating shell fish (high energy + essential oils) and low maturity of human infants at birth! The second is really interesting, there is a hypothesis that a

Also eating shell fish (high energy + essential oils) and low maturity of human infants at birth! The second is really interesting, there is a hypothesis that an early tool used by humans would be a sling for a baby; enabling immature infants to be managed more easily. Menopauses and grandmothers come into play as well!