Posted in Psychology & Medicine

Pink

Normally, babies are dressed in blue for boys and pink for girls to differentiate their sex. Even in adult societies, the colour pink is associated with women. As some women have a particular fondness for the colour, the stereotype deepens. Why is femininity related to the colour pink?

The easiest explanation is that it is simply a social construct. In other words, as society says “pink is a girl’s colour”, the stereotype is set. Although this may seem like a simple answer, it shows the power of the majority’s opinion and stereotypes. As evidence to this theory, one can consider the following excerpt. It is taken from an American magazine from 1918:

“The generally accepted rule is pink for the boys, and blue for the girls. The reason is that pink, being a more decided and stronger colour, is more suitable for the boy, while blue, which is more delicate and dainty, is prettier for the girl”.

As you can see, in the past the opposite was the social norm where pink was a boy’s colour. This shows that pink and women have no direct links. This norm was flipped around the 1940’s and pink is still the symbol for femininity.

There is also some scientific data attempting to explain the phenomenon. One study proposed that as prehistoric humans had gender roles where the men hunted and the women gathered, women evolved to seek out red berries, which are ripe and delicious. Thus, they still have a soft spot for pink things. Also, as one can see from cheek blush and red lipstick being common make-ups, women like to accentuate a flush on the face. Pink cheeks and red lips signify that they are healthy and ready for reproduction, causing men to find the colour attractive. Pink clothes further enhance this effect to make the woman look more attractive. A similar technique is used by monkeys (especially baboons) where the female’s backside turns pink or red to alert the males that she is ready to mate.

Posted in Science & Nature

Giant Monster

A gigantic dinosaur monster of 50m height and 20000t weight appears in the centre of Tokyo! The invasion of giant spiders! These are common scenarios in science fiction films. Mankind has always been fascinated by giant creatures. Whether it be a child or an adult, no one passes by the skeleton of a Tyrannosaurus rex without being awestruck. Thus, it is very easy to use such creatures in movies. But the key point of every monster movie is the “stats”. A height taller than a high-rise building and a weight nearing one of a battleship excites people before the movie even starts. The problem is that this is very unscientific (considering it is a “science fiction”).

Let us look at the dinosaur monster first. The moment the monster steps on to land, it will be crushed like tofu. Every structure in its body will collapse and the skeleton will give way, causing 20000t of meat to crash to the ground. Simply put, the monster is just too heavy. Let us hypothesise that the monster is the shape of a gigantic T-rex. Tyrannosaurus rex was 15m tall and weighed 7t. If a 15m dinosaur is stretched to the height of 50m, the height becomes 3.3 times the original. But as the width and depth need to be expanded by 3.3 times as well, the weight becomes 37 times the original. The question is whether the monster can support its own weight. Just as the volume increased by a factor of 37, the cross-sectional area of every part of the body increases by a factor of 3.3 x 3.3 = 11. As muscle strength is directly proportional to the cross-sectional area, the strength only increases by 11 times. Thus, the load on a creature’s body is the same as the factor of expansion (e.g. there is 3.3 times the load on the monster’s muscles). But this is only when the T-rex was simply stretched. According to the stats, the monster weighs 20000t – 2800 times the weight of a T-rex. To support 2800 times the weight with 11 times the muscle, the load on the bones and muscle is 250 times. This is equivalent to having 249 people the same weight as you on your back. Of course, the monster cannot support this and its bones will become crushed and its internal organs will all burst, causing instant death.

Similarly, a giant insect monster also receives the same load as its expansion. But unlike an animal, insects have an exoskeleton instead of a skeletal system. This structure cannot support the load caused by the expansion (also, if you stretch an ant that is not even 1cm to just 10m, the load becomes over a thousand times). Ergo, the monster will collapse instantly. A giant monster is an unscientific creature that can only exist in our imagination.

Posted in Science & Nature

Chalkboard

The sound of fingernails scratching a chalkboard is one of the most difficult sounds to listen to. This “screech” sound gives the sensation of your soul being ripped to shreds and invokes great discomfort. Why is this?

Professor Randolph Blake of Vanderbilt Center, USA, observed that this sound is very similar to the scream chimpanzees and macaque monkeys make when they see a predator. According to other researches on this phenomenon, many species of monkeys also hate this sound greatly. Blake used these facts to hypothesise that as our primitive ancestors used this sound to alert an enemy approaching, it has been programmed into our primitive brain to trigger a negative response. Also, physically this sound amplifies in our ears at a certain frequency to cause intense pain. The pain and our basic instincts combine to generate such an unpleasant feeling.

Posted in History & Literature

Totalitarianism

People take interest in ants for many reasons. Some people are fascinated by how ants have achieved what they deem a perfect totalitarian system. In fact, if you observe it from the outside, an ant nest appears to be completely harmonious as everyone works the same, everyone focuses on the good of the whole and everyone is prepared to sacrifice themselves. But humanity has failed in every attempt at totalitarianism up until now. The Egyptians, Greeks, Romans, Babylonians, Carthaginians, Persians, Chinese, French, British, Russians, Germans, Japanese and Americans all experienced an age of glory and appeared as if the world would be assimilated into them, but fortunately a tiny grain of sand would always fall and destroy their unified systems.

This is why there are people who try to imitate insects who live in hive societies (consider how Napoleon’s insignia was of a honeybee). If what unifies an ant nest’s thoughts into one is pheromones, then modern society’s worldwide media does the same function today. People always suggest something that they believe is good and expect others to follow it. They believe that this way, we will achieve a perfect human society one day. But this is not the way of the universe.

Nature, unlike what Darwin suggested, does not evolve so that the fittest survive and rule (and what standard could possible differentiate “fit” and “undesirable”?). Nature’s powers lie in variation. In nature, there are good, evil, insane, devastated, lively, ill, deformed, demented, happy, depressed, intelligent, foolish, selfish, generous people and big, small, black, yellow, red, white things etc. They must all exist. If there is one danger in nature, it is when one group is destroyed by another group.

If there is a field of corns and only the corns that have the “best” traits (i.e. require the least water, stand cold weather and produce juicy corn) are used to pollinate, then the entire crop can be wiped out by a single disease. Contrastingly, a wild crop with individual corns having unique traits with varied weaknesses and differences can survive diseases as the corns find a way to beat it among the many different traits.

Nature hates standardisation and loves diversity. It is through diversity that nature exerts its original abilities.

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(from The Encyclopaedia of Relative and Absolute Knowledge by Bernard Werber)

Posted in Science & Nature

Grandmother Hypothesis

There are many physiological events that puzzle scientists. Menopause is one of these as it is very uncommon in other mammals. Why do human females stop having periods after aging? From an evolutionary point of view, an organism that has lost reproductive function cannot aid evolution and thus it is a mystery how a trait like menopause survived natural selection. The leading theory in how such a phenomenon happened is the grandmother hypothesis.

According to this hypothesis, as humans are social animals menopause can still be an evolutionary advantage despite not being able to produce offspring. This is because older women can invest the massive amount of energy and time required to upkeep childbearing in other places. For example, they can help their family and society grow by working or taking care of children instead. Furthermore, as the probability of miscarriages and congenital defects rise with aging (generally after a woman hits the age of 30, the chances of a healthy pregnancy decreases), menopause has the function of protecting the gene pool of the species. These facts combined lead to the conclusion that after an individual has reached a certain age, taking care of their children or grandchildren instead of birthing more offspring is more effective in propagating their own genes. Also, there is no one that can propagate massive amounts of wisdom and information to the next generation like the elderly.

In modern society, menopause has more significance than at any point in the history of human beings. As our average life span has surpassed 80 and heading towards 90, almost half of a woman’s life is post-menopause. In some ways, the grandmother hypothesis contains within it a certain philosophy regarding life. As we age, we give birth to children and raise them until they become independent, at which point we escape our basic biological duty of reproducing to lead our “own” lives. Senescence is like a second spring after one’s “biological” life. It is the start to a new life – a more “human” life of your own where you can focus on seeking pure happiness.

Posted in History & Literature

Eros And Psyche

Once upon a time, there lived a beautiful girl named Psyche. Psyche was so beautiful that she even caught Aphrodite’s eyes. Despite being the goddess of love, Aphrodite was known to be very jealous and felt threatened by Psyche’s beauty. She commanded her son Eros, the god of love, to put a spell on Psyche. Eros uses the Bow of Love and anyone shot by his golden arrows falls immediately and helplessly in love with the first thing they see.

Aphrodite came up with a devious plan to have Eros shoot Psyche and have frogs around her, making her fall in love with frogs and fall into a despairing relationship. But her jealous plan was overthrown by an unexpected event. When Eros first saw Psyche’s face, he became entranced and accidentally pricked himself with his own arrow. Thus, Eros became madly in love with Psyche. Aphrodite, enraged by this, cursed Psyche to never find a mate for the rest of her life. Eros became depressed from not being able to see Psyche and gave up shooting golden arrows. After he gave up his job, no animals or human fell in love and no new life was born. Aphrodite could not bear to see such a scene and begged Eros to start shooting arrows again, offering him one thing that he wanted. Eros said that he desired Psyche without hesitation and Aphrodite reluctantly allowed them to meet.

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While this happened, Aphrodite’s curse made no man come to propose to Psyche. Her parents became worried and asked the advice of the oracle at Apollo’s temple. The oracle stated that as she is destined to marry a monster, she must be placed atop a mountain in bridal attire. Accepting her fate, Psyche stood on the mountain but eventually jumped off a cliff in despair. But Zephyrus the West Wind caught her and brought her safely to Eros’ place, just as Eros planned. Psyche enjoyed a comfortable life in the beautiful castle with many maids at her service. However, her husband only came in the deep dark of the night. Whether it was because he feared Aphrodite’s wrath or the difference between a god and a mortal, he asked her to never try find out who he was and that if she truly loved him, she should trust him. But Psyche eventually fell victim to her jealous sisters’ scheme and her curiosity, leading to her accidentally dropping candle wax on Eros’ face as she took a peek at his face. Eros was awakened and became enraged. He chased her away and forbade her from coming back. Psyche fell in despair and threw herself into the river, but the river carried her to the riverside where the shepherd god Pan rescued and consoled her.

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At first, Psyche tried to find Eros while avoiding Aphrodite, but eventually she decides to plea directly to her. Despite her bravery, Aphrodite threw challenging tasks one after another at her like a mean mother-in-law, ultimately commanding her to retrieve some beauty from Persephone, the queen of the underworld (since travelling to the underworld signifies death, Aphrodite must have truly hated Psyche). 

However, Psyche was determined to see Eros even at the cost of her life. Admiring her commitment, a tall tower before the underworld gave her a hint. It told her to place two coins on her tongue and bread in each hand when going to the underworld. The coins would be to pay Charon the ferryman while the bread would distract Cerberus the three-headed dog guardian. She succeeded in seeing Persephone, who gave her a box of beauty and told her to never open it. But wanting to look beautiful in front of her lover (Eros), Psyche opened the box. The box did not contain beauty, but instead contained a death-like sleep from the underworld, putting Psyche in a deep sleep. Although he chased her away, Eros came back to see Psyche and found her in this sleeping state. He took the corpse-like Psyche and kissed her softly on her lips, awakening her from the deep sleep.

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Eros eventually sought help from the king of gods, Zeus, to persuade Aphrodite. After Zeus’ persuasion and seeing the love the two have for each other, Aphrodite accepted the relationship and Zeus gave Psyche the immortal drink ambrosia to make her into a goddess. The now immortal Psyche and Eros were married and had a daughter named Hedone (like in Hedonism), the goddess of sensual pleasures.

Eros symbolises physical and sensual love while Psyche is a Greek symbol for butterflies, the soul and emotional love. Ergo, Eros and Psyche represent the union of physical and emotional love into perfect love. Love and the soul are inseparable things. The most basic instinct of any organism is to reproduce and human beings have evolved that into the sacred concept that is love. To speak bluntly and without philosophy, from a purely biological perspective there is no greater purpose to life than to find a suitable mate and leave descendants. There is nothing more fundamental than pure love.

Posted in Science & Nature

Mitochondrial Eve

We were all born from our parents. Our parents were all born from our grandparents. Everyone has a family tree and a root. If so, is it possible to find the beginning of mankind – our true “root”?

Our cells have an organelle (a part of the cell) called mitochondria. Mitochondria act as the cell’s engine and allow the cell to generate energy through respiration. An interesting fact about them is that they are not originally “ours”. About 1.5 billion years ago, there was an event where a prokaryote (cells without a nucleus, like a bacteria) invaded (or was eaten by) a eukaryote (cells with nuclei, like our cells). The prokaryote and the cell began a symbiosis and the prokaryote became a part of the cell.

Due to the external origin of mitochondria, they have a different genome to us. This is called mitochondrial DNA, shortened to mtDNA, which allows mitochondria to divide and synthesise proteins without the help of the host cell. It used to be a completely independent organism, but it has lost some of its functions to the cell.

mtDNA is inherited in a different way to normal DNA. Normally we receive half of our mother’s and half of our father’s genes, but we only inherit our mother’s mtDNA. This is because sperm keeps mitochondria in the tail which is lost during fertilisation, meaning our father’s mitochondria cannot be inherited. The only way to gain mitochondria is from those in the cytoplasm (the material that fills cells) of our mother’s egg. This is known as maternal inheritance.

Using this information, scientists compared a large sample of people’s mtDNA to turn back the clock. Knowing that a child and its mother share the same mtDNA and the mother and grandmother share the same mtDNA, we can analyse mtDNA to find the origin of mankind, or our first common female ancestor – also called Mitochondrial Eve.

Mitochondrial Eve is estimated to have lived 200,000 years ago in Africa, thus she is also known as African Eve. Her mtDNA is an ancient heirloom passed along generation after generation to us, as evidence of evolution. Every living person on the face of the Earth is a descendant of her. So in some ways, it could be said that we truly are one big family.

Posted in Science & Nature

Lemming

When you think of lemmings, you are bound to think of two things: a small, round rodent and mass suicide. The reason being, we have been taught as children that lemmings often commit mass suicide. This theory originates from the late 19th century when scientists could not figure out why lemming populations seemed to spike rapidly and then fall just as fast. In 1908, a man named Arthur Mee proposed that they kill themselves, writing so in the Children’s Encyclopaedia. He posited that as an overpopulation of lemmings could devastate the European ecosystem, the lemmings were naturally controlling their own population count. His theory was backed by a documentary made in 1958 called White Wilderness that showed a footage of a herd of lemmings leaping off a cliff to their death.

However, this “fact” has a severe flaw. Lemmings do not commit mass suicide. If you think about it for even a second, the thought of an animal that commits mass suicide (other than human beings) is preposterous as the species would die out. The reason why the lemming population spikes is the same as for mice and rabbits: they pride themselves in extreme reproductive abilities. A female lemming can have up to 80 babies in one year. If the population grows at such an alarming rate, then as explained above, the environment would not be able to support it. This causes the lemming population to plateau, not rising or falling, as there is not enough food to feed all the lemmings. However, due to the shortage of food, the lemmings become desperate and hungry. To find more food, the lemmings begin a migration, but the combination of hunger and being in heat causes them to act irrationally and wild. The result is a massive herd of hungry, stupid lemmings frantically running around all over the place. This leads to some lemmings accidentally slipping off cliffs and drowning in the river while swimming. This is not suicide.

Then what was the strange phenomenon of mass suicide depicted in White Wilderness? The answer is simple: it was staged. The producers tried to replicate Mee’s theory by importing a dozen lemmings and filming them running around the place. Then why did these lemmings commit suicide? Because the producers launched them off a cliff from a turntable.

Posted in Science & Nature

Cordyceps sinensis

Cordyceps sinensis is a fungus known as dongchoong-hacho(동충하초, 冬蟲夏草) in Korea, with the same characters used in China and Japan. It literally translates to “worm in the winter, herb in the summer”. It is a peculiar fungus with an interesting life cycle. In the summer when the weather is warm, the fungus infects its host (usually ghost moth larvae) through spores. The infected caterpillar is slowly filled with mycelium (thready part of fungi), until it becomes mummified with only the shell remaining. The fungus keeps replicating until it bursts out of the caterpillar’s head with a club-like fruit body (which holds the fungus’ spores). This makes it look as if the caterpillar, which was an insect in the winter, turned into a fungus in the summer (technically it is at this stage, but the caterpillar is long dead). In English, it is also called caterpillar fungus or vegetable worm (which is a misnomer as fungi are not vegetables).

Cordyceps sinensis is an important ingredient in traditional Eastern medicine as it is believed to be a perfect balance between yin and yang due to it possessing both animal and plant (actually a fungus) properties. It is used to treat many diseases from fatigue to cancer.

Although Western medicine usually looks down on and ignores Eastern medicine, research shows that Cordyceps sinensis actually has medicinal properties. Cordycepin, a chemical extracted from the fungus, has been shown to inhibit the growth of viruses, fungi and tumours through its inhibitory actions on a certain protein. There is also research that suggests it can protect the body against radiation poisoning.

Posted in Psychology & Medicine

Cuteness

The word cute is used in many different contexts: a girl saying a guy is “cute” could mean that she finds him attractive, while a guy saying a girl is “cute” may imply that they find them lovable but not in an attractive way. But essentially, cuteness can be described using the concept of neoteny.

What is neoteny? This is a concept in evolution where adults of a species preserve traits of youth. The end result is a mature organism that appears to be immature. A good example of this is the axolotl, which preserves its juvenile aquatic form (e.g. gills and overall look) in adulthood, even when they are living amphibiously. 
It has been hypothesised that human beings originate from neotenised chimpanzees, as a baby chimp has striking resemblance to a human. 

Cuteness and neoteny have an extremely intricate relationship. It is common knowledge that the most powerful attractors of care from an adult is cuteness. Almost every infant organisms have “cute” appearances that make people instantly feel warm and fuzzy. Ergo, being cute (i.e. neoteny) is a survival advantage as the young are cared for more until they are mature. This simple concept has led to the lengthening of childhood in humans, as children require a long time under the care of adults while they absorb knowledge and learn how to function in society. This also solved the problem of babies being born with immature brains (as the head is already too large to fit through the birth canal) and still having a chance at survival.

It has been scientifically proven that people with cuter faces are seen in a more positive light, more likely to be hired and less likely to provoke aggression in violent people (the human brain is wired to inhibit aggressiveness when faced with cuteness, presumably an effort to reduce child abuse and improve survival). In short, cuteness invokes maternal or paternal love and causes a sudden want to protect the cute thing.

This leads to another advantage of cuteness: attractiveness. Although beauty and cuteness are almost diametrically opposed, many men (and women) find “cuteness” to be appealing in the opposite sex. This is likely related to the brain confusing parental love with romantic love. A youthful look is also associated with fertility, which greatly influences a man’s subconscious choice of a partner. However, it is also true that because of this effect a man may see a cute girl only as a “little sister” figure they need to protect, rather than a potential love interest.

So what makes for a cute person? As stated above, these are traits of neoteny, or in other words:

  • large eyes
  • small nose 
  • small jaw and teeth 
  • flattened and rounded face 
  • large brain/forehead (causing the eyes/nose/mouth to be lower on the face)
  • hairless face and body 
  • limbs shorter than torso length 
  • legs longer than arms
  • upright posture

These characteristics are commonly used in animations and cartoons to boost the audience’s affection towards the character. This is especially the case in Japan where the a cultural obsession with cuteness is clearly evident.