Larger/Smaller Skull Volume



Two schools of thought exist on the question of skull volume. The “small skull†camp, which enjoys the support of many scientists, argues that it is borderline impossible for humans to evolve with larger heads. Why is this? Well, anyone who has given birth knows that a child’s head is, to put it tactfully, rather large already. For this reason, many biologists believe that a larger head would make birth impossible – something the evolutionary process would phase out rather quickly, no doubt. A large head at birth is also more likely to hurt or kill the mother. With this in mind, it seems inevitable that head size will stay the same, or even decrease over time.
However, this ignores the fact that Caesarean sections are these days providing more and more opportunities for the survival of big-headed children. In fact, some believe that C-Sections will eventually be safer than natural births – leading to the possibility that children with small heads, naturally delivered, will be less likely to survive than those requiring an operation.
But such dependence would be dangerous for humans. If huge-headed humans lost the ability to perform C-Sections, we could expect a quick extinction. 

Linkback:
https://tubagbohol.mikeligalig.com/index.php?topic=64068.0