MrRoundtree17

MrRoundtree17 t1_jdugj8e wrote

Not really an answer to your question, but a fun fact. In order to stand upright, human legs have to connect directly downward from the pelvis. This means the opening which baby’s pass through during childbirth is smaller than in 4-legged animals where the legs connect at an angle to the pelvis. In order to fit the baby through the narrower passage, we evolved to give birth earlier when the baby is smaller. See, most mammals have a similar gestation period relevant to their life span. The human gestation period should be around 14 months. So that’s why newborn babies are such helpless potatoes when they’re born at 9 months.

Edit: I kept saying tailbone when I meant pelvis.

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