The race with the smallest skulls has the biggest noses. According to the rest of our theory, what does that mean? It means that the engine of the smaller brain gets hot more quickly, so a wider nose allows for greater airflow as well as less warming of the air.
Essentially, the warmer the climate, the larger the nose. But the climate doesn’t explain everything. There are plenty of people with big noses in cooler climates.
Einstein was known for his huge nose. And he’s also famous for one of the most unique and powerful minds in the past 200 years. If you assume that his brain was more powerful than the average person, he’d need more airflow to support it.
Peoples noses and ears grow throughout their lives. We’ll have to get into the ears later. What’s important here is that the nose can keep growing.
The eyes cool the brain. We’re going to develop this idea in a future post. While I think there is evidence to support it, the eyes simply do not grow, so they cannot appropriately adapt the brain to greater stress. They do have another function that relieves stress, they can emit electromagnetic waves.
The brain can get bigger. And it actually does until a certain point. People’s brains begin to shrink after their fortieth birthday.
So yes, the climate matters. But not just the external climate. The internal climate as well. There are a couple of actions the body can take to neutralize the higher brain entropy: balding and a bigger nose.
What determines the solution? Let me remind you of all of our studies on eyesight. Essentially, poor eyesight is a symptom of high brain entropy. If you opted for glasses or contacts, you may force your body into a constant elevated state. The brain thinks it’s at equilibrium, but it’s not. So instead of increasing airflow [with nose enlargement], it reduces entropy by cooling the top of the head.
Sources:
- https://www.popsci.com/climate-nose-shape-evolution/
- https://onlinelibrary.wiley.com/doi/abs/10.1288/00005537-199103000-00009
- https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1006616
- https://www.theguardian.com/science/2017/mar/16/climate-shaped-the-human-nose-researchers-say
- https://www.verywellhealth.com/how-your-nose-grows-with-age-2223746
- https://www.zwivel.com/blog/sniffing-nose-shapes-12-common-nose-types/
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