A Chinese student built an interesting app using vibe coding that visualizes nearly 5,000 artifacts in the British Museum from 99 countries around the world.
The app shows:
• When these artifacts arrived
• Which country they came from
• And how the distribution would look if all artifacts were returned to their countries of origin.
Romantic lip kissing has been documented in only about 46% of existing cultures**.
If it were an entirely irresistible instinct, I think we'd expect to see it in the exact same form across all human cultures; still, I don't think this means kissing can't have a biological basis.
As far as I know, there are three prominent theories about this: the Premastication (Pre-chewing) Theory, the Mate Selection and Genetic Compatibility (Scent Theory), and the Nerve Endings and Biological Reward theory.
++In recent years, an explanation rooted in grooming/cleaning behavior has also been added to these.
For much of human history, mothers in many societies would chew solid foods into a puree and transfer them directly mouth-to-mouth to their babies. According to this theory, even after food transfer disappeared during the evolutionary process, that very act -- lip-to-lip contact -- may have endured as a biological ritual for showing love, trust, and affection.
According to the Mate Selection and Genetic Compatibility theory, coming face-to-face at such close range allows us to pick up on general body scent and some chemical cues. In other words, the habit of sniffing may have evolved over time into kissing, a much closer form of contact.
Finally, there's the nerve endings theory. The lips are one of the areas with the densest nerve networks in the human body. The space dedicated to the lips in the part of our brain that processes the sense of touch is also disproportionately large. Stimulating the lips can trigger systems associated with reward and attachment; social contact and romantic bonding are linked to processes involving oxytocin and dopamine. This biological reward system may have ensured that the act became permanent.
I think kissing was shaped not by a single reason, but by a combination of these factors. While premastication (the mother-infant bond) laid the emotional and affectionate groundwork, scent/mate selection and the sensitivity of the lips may have transformed it into a romantic ritual.
** For the research: https://t.co/QQWBOPXelr
Tiandi Courtyard, a century-old Nakhi residence now turned into a “living museum.” Once home to a family of three imperial scholars, it now echoes with ancient music and dance. 🏡🎶
#sisuglobalyouthinsightonchina#livingculture#nakhitradition
"Americans are attached to violence. They attach themselves to processed violence, out of cans.
They're TV-hypnotized.
TV is the invisible protective shield against bare reality. Twentieth Century culture's disease is the inability to feel the reality.
People cluster to TV, soap operas, movies, theatre, pop idols, and they have wild emotions over symbols, but in the reality of their own lives, they're emotionally dead."
~ Jim Morrison