Size Matters: The Evolutionary Case for the Larger Nose

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:

  1. https://www.popsci.com/climate-nose-shape-evolution/
  2. https://onlinelibrary.wiley.com/doi/abs/10.1288/00005537-199103000-00009
  3. https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1006616
  4. https://www.theguardian.com/science/2017/mar/16/climate-shaped-the-human-nose-researchers-say
  5. https://www.verywellhealth.com/how-your-nose-grows-with-age-2223746
  6. https://www.zwivel.com/blog/sniffing-nose-shapes-12-common-nose-types/

Smell With Your Eyes

Preliminary reading: Hawking [Eye] Radiation and We Are All Pit Vipers

So if you did your preliminary reading, you’re up to speed on the theory. In the same way that snakes and cats use their eyes to hone in on prey, humans can use them to enhance their sense of smell.

As long as even a single molecule reaches your nose, it’s potentially something you can sense. For a neural system that can detect single photons, it shouldn’t be surprising that the nose is incredibly sensitive as well. Some odors can be detected when there is only a few milligrams per thousand tons, or a drop in an an Olympic-size swimming pool. Substances with stronger odors have odor thresholds [how much of something you need to smell it] in parts-per-billion.

How does it work?

The infrared radiation heats the object [if your eyes are on it] just a very small amount. No one has discovered this yet, because it doesn’t happen all the time, and it doesn’t happen to everyone.

Does all of this sound ridiculous to you? Here’s how you can prove it to yourself: take your phone, your drink-whatever is closest-and hold it up to your nose. Note the smell. Now look down at the part you are smelling and continue. You should notice more depth to the smell. Like you took something out of the fridge and put it in the microwave, but on a much smaller scale. Why does that happen? Because your nose is sensitive to chemicals that make up things. When you heat it up, it gives off more of those particles, so the smell is stronger, and more accurate. So your eyes heat up your food ever so slightly, giving your nose just a little bit more information. With an organ that is sensitive to parts-per-billion or even parts-per-trillion, just a couple more molecules can add much more depth to the smell.

Sources: 

  1. https://en.wikipedia.org/wiki/Odor_detection_threshold
  2. https://en.wikipedia.org/wiki/Olfactometer