Human Ethology
I once read a couple of books with that title. It was all very superficial. The topic was completely closed. Therefore, this work of mine is the most fundamental work that exists in the information field accessible to me.
So. Absolutely every gesture, sound, and pattern of human behavior is rigidly determined by biomechanics and changes only under enormous environmental pressure. For example, the international gesture of agreement is shaking the head up and down. Why? Bowing the head as a sign of submission. Looking up and down is meaningless; there's nothing important in that trajectory. The sign of refusal is moving from side to side. Because you're looking around and assessing the situation, not submitting. Bulgarians have this inverted meaning due to forced conversion; they have a habit of dodging gestures.
A smile is always the grin of a predator. A smile is never a sign of friendliness. It's a form of grinning when gathered in a circle of allies discussing enemies. Like, for example, "When I hear the enemy's name, I immediately reach for my gun." All comedians discuss exclusively dangerous and unacceptable topics, expressing controversial positions among like-minded people. The dumbest humor is violence. Kick someone and you laugh.
Many gestures have become more complex as a result of the use of weapons. For example, threatening poses are basically useless against dogs these days, but stones and sticks, even the smallest ones, work perfectly. The same goes for people in general. Like, the intent to harm is almost impossible to detect by proles except through tools. However, everyone is also very afraid of cameras, as they are the unambiguous ability to write a denunciation.
The same applies to letters. Words containing the letter "Ы" are, on average, worse than the letter "И." Why? Well, there's a degenerate idea that if Americans say "Чиз" (cheese) in a photo, then Russians should say "Сир" (syr). Technically, the "И" (I) exposes the upper jaw, which is beautiful and all that. And the "Ы" (yes) exposes the lower jaw, which is ugly and generally associated with all sorts of creepy facial expressions. Why? Well, the top is fixed, and the bottom is flexible. A smile is a friendlier sign than showing off your bottom for many universal reasons. Just like going shirtless is more respectable than going without underwear. If you think about it, arms are also fixed, attached to the body, while legs propel you through space. So, watching your enemy's leg movements and movements before a fight is useful, but looking at their arms is pointless unless they're in a fighting stance or with a weapon: it takes longer to get within striking distance than to deliver it. Again, they say "stop" first, and only then "hands up."
In general, we're constantly being forced to ignore all aspects of ethology. And that's why such platitudes should be gleaned through reasoning, not immediately understood.
Hair. It's always about health and status. More hair is better. Shaving is always an element of desecration. There's a simple hygiene argument. Like, you have lice, shave them. Your armpits stink, shave them. Cabbage in your beard, shave it. Hair is always about health and status. Wearing a beard in the 21st century is indecent. You're claiming a status that even presidents don't have. The same goes for hygiene. Yes, hair requires a little more care, but that's its whole purpose, beyond warmth and scent. Taking care of yourself is a sign of high status. Homeless people stink. Unkempt hair is a sign of the very bottom of society. But it's also a sign of a free person. A homeless person is infinitely freer than a clean-shaven prisoner. Maybe a homeless person has lice, and a prisoner doesn't. But you get the idea. The same standard applies to sex workers with shaved pussies and so on. And free feminists let their hair grow, and that's wonderful. Again, if there are no lice, there's no reason for men not to wear long hair, except for the patriarchy. If a girl adores your scent, and you adore hers, then there's no point in shaving your body. Unless you're slaves, either.
Poses. The concept of open and closed postures, and all the rest, is an absolute animal foundation. An open posture means being open to attack. A closed posture is the opposite. Generally, without lengthy retraining, conditioning, or pressure, a person quickly achieves a correspondence between their internal state and posture. And posture is constantly changing, both because different parts of the body become tired and because the situation—the person's opinions and feelings—has changed.
Addition.
A stone falling downwards is normal. A stone flying upwards is an anomaly. Teeth are always about killing another living thing, even a seed or a blade of grass. They cannot be a gesture of true friendliness, which is expressed in physical closeness: shoulder to shoulder, back to back, side by side, like a fish protecting a coral. Similarly, none of the described laws are ever violated without an external source of energy or at least asymmetry (a stone flying on a helium balloon). Civilization has an abnormally high energy level, purely physically (we burn an order of magnitude more calories than we consume), so there are endless anomalies, like every fifth stone flying upward, and without further investigation, it seems to happen automatically. I mean, there are a million cases, some convoluted social structure, where it's cool to be bald, to stand on all fours, and to take an anal probe, but in the end, it turns out that it's only cool because everyone who does otherwise is quietly thrown in the torture chamber or killed.