Most mammals are born in a more developed state than humans. Within minutes they can walk and feed themselves. Why are humans different? The fact we walk upright holds the key.
- 75% of a baby's brain develops after birth.
- A baby would need to stay in the womb an extra 12 months if its brain were to be fully developed at birth.
- A baby's head must be small enough to fit through the mother's narrow pelvic opening.
- If a woman's pelvis were any wider, walking upright would be impossible.
Human babies are born in a state of utter helplessness. It's almost like all babies are born prematurely.
Most other animals have significantly more independence at birth.
Within an hour or two of birth, most animals are up on their feet and running. Others, at the very least, can find the ...