Author: Jinavie

Posted in Science & Nature

Folding Paper

Posted on by Jinavie

Take any piece of paper and fold it in half. Then fold it in half again. Chances are, you will not be able to fold the paper more than seven times. Try it. No matter how thin the piece of paper is, it is extremely difficult to fold a piece of paper in half more than seven times. The reason? Mathematics.

A standard sheet of office paper is less than 0.1mm thick. By folding it in half, the thickness doubles and becomes 0.2mm. Another fold increases it to 0.4mm. Already, the problem can be seen. Folding a paper in half doubles the thickness, meaning every fold increases the thickness exponentially (2ⁿ). By seven folds, the thickness is 2 x 2 x 2 x 2 x 2 x 2 x 2 = 128 times the original thickness. This makes the piece of paper so thick that it is “unfoldable”.

Another limitation is that folding the paper using the traditional method means the area also halves, decreasing exponentially. With a standard piece of paper, the area of the paper is so small after seven folds that it is mechanically impossible to fold it. Furthermore, the distortion caused by the folds is too great for you to apply enough leverage for folding the paper.

Could these limitations be overcome by using a larger piece of paper? Sadly, no matter how large the piece of paper, it is impossible (or at least extremely difficult) to fold a piece of paper over seven times. This has been a mathematical conundrum for ages, until it was solved in 2002 by a high school student named Britney Gallivan. Gallivan demonstrated that using maths, she could fold a piece of paper 12 times. The solution was not simple though. To fold the paper 12 times, she had to use a special, single piece of toilet paper 1200m in length. She calculated that instead of folding in half every other direction (the traditional way), the least volume of paper to get 12 folds would be to fold in the same direction using a very long sheet of paper.

Mathematics, along with science, is what makes something that seems so simple, impossible.

Posted in History & Literature

Dracula

Posted on by Jinavie

Dracula is a fantasy/horror novel written by Bram Stoker in 1897. It is written as a series of letters, diary entries and other log entries, telling the battle between the vampire Count Dracula and Professor Van Helsing (with the help of some other people). It is one of the most well-known horror fictions in history and defined the modern image of vampires. Although it seems unlikely, the blood-sucking, immortal, creepy vampire that is Count Dracula is (loosely) based on an actual person.

Vlad III Dracula of Wallachia was a Romanian prince who led his army to fight against the invading Ottoman Empire during the 15th century, which was expanding its reach throughout Europe at the time. He was also referred to as Vlad the Impaler due to his incredibly cruel punishment of prisoners and enemies. He would kill the victims by stabbing their bodies with spears, typically through the anus up to the mouth. He would then have the bodies hanging as a warning to others. The victims would die a slow and painful death as they were drained of blood.

Another interesting fact is that Vlad III was an expert in guerilla warfare and would frequently hide his army in trees and strike the enemy at nighttime. This earned him a legend that he was bat-like – hanging from trees and only attacking at night to drain people of their blood. It is likely that Stoker took this legend and incorporated it into his novel, making Count Dracula able to transform into a large bat.

It is fascinating to see how someone who is portrayed as a noble hero in Romania and Slavic countries is remembered as an archetypal monster in modern times. This serves to remind us that no matter what good deed we may do, the world will only focus on a certain aspect and define you by that characteristic. The world is stubborn, critical and narrow-minded. Ergo, it is a waste of time trying to convince the world that you are a certain kind of person. As long as you know what kind of person you truly are and accept it, you will be able to live a happy life.

Posted in History & Literature

Voyeurism

Posted on by Jinavie

Generally speaking, people do not like it when someone watches them undress or see them in a compromising situation. The act of looking in such a situation when a person explicitly tells you not to is called voyeurism, which is French for looking. Peeking is an extreme violation of trust and privacy and can even be considered a crime. However, there are people like Edgar Degas who made a career out of peeking. Degas is very famous for his portraits of women bathing, combing their hair and drying themselves with towels. Through peeking through windows without permission, Degas was able to capture the women’s natural beauty without any artificial manipulation (if he was not caught).

The prohibition against looking is well-established in heroic mythology.

In the bible, when God decides to destroy Sodom and Gomora (two cities that become so indulgent and decadent that they become the symbol of sin itself), angels warn Lot to leave Sodom with his family. They tell Lot and his family not to look behind them as they flee, for they would become consumed by the sin. However, his wife looks back as they leave and is turned into a pillar of salt.

This story is likely to have been derived from the Greek mythology of the musician Orpheus and his wife Eurydice. When Eurydice is unfortunately killed by falling in a pit of vipers, Orpheus becomes struck with grief and turns to singing and playing his lyre for comfort. The gods are so moved by his sad, mournful songs that they advise him of a way to save Eurydice. On their advice, Orpheus travels to the underworld and persuades Hades and Persephone to release Eurydice back to life with his music. The king and queen of the underworld, who are never moved by such things, are brought to tears by his music and accept Orpheus’ request. However, Hades tells him not to look at Eurydice until they reach the surface. Overjoyed, Orpheus takes Eurydice’s hand and leads her back to the living world. When Orpheus reaches the surface, he looks back in anxiety to make sure Eurydice is still behind him. However, he does not realise that both must be above the surface and when he looks back, Eurydice has not reached the upper world yet. She is dragged back into the underworld, never to return again.

There are many other instances of voyeurism being punished in literature, such as the Peeping Tom who is struck with blindness when he tries to peek at Lady Godiva in the nude, or anyone who makes eye contact with Medusa turning to stone. It is clear that voyeurism has been an integral part of humanity throughout history. No matter how immoral the act may be, the stories show that the hero always looks.

Posted in Psychology & Medicine

Reverse Psychology

Posted on by Jinavie

If you tell a child not to do something, chances are he or she will do it. This is a simple rule of parenting that everyone has experienced at some point in their lives. People (especially children and teenagers) are wired in a certain way so that if they are told they cannot do or have something, they react by wanting it more. They then rebel by reasserting their freedom and express anger towards the person restricting their freedom. This is a natural response for a person that is beginning to develop a sense of self and ego, as they feel an instinctive desire to protect their right to free will. This psychological phenomenon is known as reactance.

Although reactance can be very troublesome and annoying to deal with, you can easily turn it around to your advantage if you understand the basic principles behind the effect. Under the assumption that a child will always react to your commands and advice by doing the opposite, we can deduce that if you say the opposite of what you want, they will end up doing what you want. This is reverse psychology. It is a surprisingly effective method of manipulation, especially in those with high reactance (usually children or those who are as immature and stubborn as children).

It has been scientifically proven that reverse psychology is extremely effective in children, as they would rather protect their (perceived) free will than avoiding study or not eating their greens. An example of reverse psychology would be telling a child to stay home when they actually want them to go out and play. However, reverse psychology is not the most ideal way of parenting as it reinforces the idea that it is okay to do the opposite of what you ask, thus undermining your authority.

Reverse psychology works just as well in adults when used right. For example, using a strong imperative tone against a person effectively assaults their ego, which provokes their natural instinct of reactance. If you are not in a position of authority and the person has the option to defy you, it is likely that they will revert to an irrational teenager and do the opposite of what you commanded. However, repetitive use of reverse psychology may lead the person to think that they are being manipulated, causing them to nullify it by reverse reverse psychology. Reverse psychology can be a double-edged sword if this happens, so it is important to know when it is most likely to be effective.

Psychological reactance is more likely to arise if the restricted option appears more attractive and important. The greater the restriction of freedom, the greater the psychological reactance. Also, arbitrary threats produce high reactance as they do not make sense, making people more rebellious. It is important that reverse psychology be used subtly and sparingly on people who are resistant to direct requests. Mastery of the above skills will help you manipulate a person into doing your bidding under the illusion that they are acting on their free will.

Posted in Science & Nature

Metal

Posted on by Jinavie

Next to the discovery of fire and the wheel, the discovery of metals and the mastery of metalworking was arguably one of the most important advances for prehistoric humanity. Metal was far superior to rock, clay, wood or any other natural resource known to man in terms of strength and sharpness. Because of these properties, metal soon became a valuable commodity. It can be seen how much impact metal had on humanity’s history, considering that the stages of human prehistory were named after the type of metal (or lack thereof) that was mastered then: Stone Age, Bronze Age and Iron Age.

The discovery of metal came in two ways.

One was through mining, where prehistoric people discovered that shiny, hard objects were buried in the ground. They later discovered that with enough heat, they could melt the metal out of ores (copper and tin were the first metals to be gathered this way) and mould them into any shape. After smelting technologies developed, our ancestors found that mixing copper and tin produced bronze – a much stiffer and more durable metal than either of its components. A mixture of metals is called an alloy. This was the start of the Bronze Age. Bronze was extremely useful and people quickly came up with innovative ways of using it, such as farming equipment and weapons.

Some other metals used during this age were: gold, silver, lead and mercury. It is likely that gold was one of the earliest metals used as it comes in pure nuggets and is easily workable thanks to its chemistry. However, given that gold is rather soft and was treated more as jewellery than a practical metal, it was not used as much to advance technology.

The second way mankind came upon metals was in the form of “gifts from the gods”. A prime example is iron. Although the Iron Age began around 1200BC at the earliest, there are iron objects (mainly jewelleries) that have been dated back to 5000BC. How could this be? This was before mankind had the technology to smelt iron ores (which is more difficult and needs much higher temperatures than copper or tin ores), so the iron could not have been gathered through mining. The answer to this conundrum lies in meteorites. About 6% of meteorites contain iron and nickel, which prehistoric civilisations may have stumbled onto and taken the shiny pieces back to their tribe. The people would have considered the gathered iron a “gift from the gods”, as it had crashed down from the “heavens”. Because of this reason, iron was considered more valuable than gold or silver and was frequently used for jewellery. This is reflected in Arthur C. Clarke’s science fiction short story, The Songs of Distant Earth, where sentient sea scorpions hoard metal objects stolen from the humans and wear it proudly as a badge of honour.

The history of iron and how it was believed to be a gift from the heavens relates to a common superstition of how finding a penny (or any coin) represents good luck. As “metal” (mainly iron) was considered a holy gift bestowed unto mankind, finding a piece of metal was believed to be a blessing and some form of protection against evil. This is also represented in various traditions such as hanging horseshoes over doorways and wearing charm bracelets with metal on it.

Although it sounds like a silly superstition, it clearly shows how metals have been an integral part of the development of civilisation.

Posted in Psychology & Medicine

Flow

Posted on by Jinavie

Have you ever had a moment of pure passion, where you are so immersed in what you are doing that everything around you does not matter and you are in a state of total bliss? In that moment, you feel fully alive, present and completely engaged with what you are doing. When the happiness and creativity expert Mihaly Csíkszentmihályi was studying how painters work, he noticed an odd thing. When their painting was going well, they did not care about getting tired, hungry or uncomfortable. They just carried on. But when the painting was finished, they rapidly lost interest in it.

Csíkszentmihályi described this state of mind as a flow state: the experience of being fully engaged with what you are currently doing. When in a flow state, an hour can pass in the blink of an eye, action and awareness merges and the experience is intrinsically rewarding. You feel that what you are doing is important, in full control and not self-conscious. Flow state does not just involve ultimate concentration. It is a complex state of mind where you are solely driven by focused motivation, operating at your peak level of mental and emotional engagement. Essentially, your mind uses 100% of its capacity for the task at hand, rather than wondering what is for dinner or peeking at the beautiful girl across the road. Because of this, a person in flow state not only works with great efficiency and creativity, but they also feel positive, energised and happy. In fact, the intense spontaneous joy brought on by flow state can almost be considered the mental equivalent of an orgasm.

So how can you achieve flow state? Flow state is not something that one chooses to go into. It is only attained when certain criteria are met.

  • Flow state can happen with any activity, but it is more likely to occur if you are internally motivated (i.e. you are doing the activity mainly for its own sake).
  • You should have clear short-term goals for what you are trying to achieve. This adds direction and structure to the task.
  • An important aspect of flow is that the activity must be challenging enough to stretch your skills almost to the limits, but not more. If it is not challenging enough, you will get bored. If it demands more skill than what you are capable of, you will become anxious. That being said, the balance only has to be between “perceived” challenge and skill. In other words, all you need is confidence that you can take on the challenge.
  • The activity should provide immediate feedback on how you are doing (e.g. seeing how a painting is turning out, hearing yourself sing). This allows you to adjust your performance in order to maintain flow state.

Flow is an incredibly useful thing. Through flow, you can forget about your worries and your strife, reach a state of pure happiness and inner peace and produce something truly great. The key to happiness is knowing what allows you to reach flow state and routinely entering flow state. For example, I know that the three things that give me flow are: music, humour and obsessions. Ergo, I play my guitar and sing, watch television shows that make me laugh and write an entry for the Encyclopaedia of Absolute and Relative Knowledge every day. All of these activities allow me to be truly happy, no matter what the situation may be.

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Posted in Psychology & Medicine

Reaction

Posted on by Jinavie

If you were walking along the street and found a bird lying on the ground, how would you react? You would probably poke the bird to see if it is alive. We have a peculiar habit since we are children of poking living things that we see for the first time. Through poking, we discover whether it is alive or dead, soft or hard, slimy or furry, docile or aggressive.

Prompting a reaction and observing the reaction is a surprisingly useful way of learning. In chemistry, we react an unknown substance with other chemicals to discover its identity. In medicine, we stimulate parts of the brain with electricity to discover what each part does. In physics, we build giant accelerator to crash particles together to find out their constituents and properties. If you fell into a cave so dark you cannot see even one foot ahead of you, the best way to find out if there is a wall or a hole or water ahead of you is throwing a rock in that direction.

This principle can be applied to psychology. To learn how people around you behave, provoke them. Human beings are extremely sensitive to stimuli and even when they consciously try to hide it, they will subconsciously react. If you keep (subtly) poking the person, you will soon be able to predict how they will react to something, what actions they will take, and you may even discover what is on their mind.

We cannot see the wind, but we can infer that it exists because the leaves blow. The best way to prove something that you cannot see inducing and looking for reactions.

Posted in Life & Happiness

Communication

Posted on by Jinavie

What I am thinking,

What I want to say,

What I think I am saying,

What I say,

What you want to hear,

What you think you are hearing,

What you hear,

What you want to understand,

What you think you understand,

What you understand,

Because there are ten possibilities between what I think and what you understand, there is great difficulty in our communication.

But even so, we must try.

Posted in Science & Nature

Caesarean Section

Posted on by Jinavie

(To read about how babies are made and born, read the From Cell to Birth miniseries! https://jineralknowledge.com/tag/arkrepro/?order=asc)

Most animals give birth through a female’s vagina. Of course humans are the same when it comes to natural birth, but nowadays, it is not uncommon to find women wanting a caesarean instead of the traditional method. A caesarean (also called C-section) is a surgical procedure where the fetus is taken out by cutting through the lower abdomen into the uterus. The history of caesareans is quite dark. Back in the old days when medicine was not advanced, caesareans were mostly used to rescue fetuses from mothers who had died during childbirth. The first record of a successful caesarean where the mother survived dates back to the 1500s. Many people believe the word “caesarean” came from the Roman emperor Julius Caesar, who was allegedly born via a caesarean. However, it was rare for caesareans to be performed in Roman times and even if they were, the mothers almost certainly died in the process. Given that his mother was alive and healthy well into his adulthood, it is highly unlikely that Caesar was born by caesarean (there are no concrete records of it either).

There is much debate to whether a caesarean is better or worse than natural birth (except in emergency situations where a caesarean is required). According to research (in cases without known risks to the fetus), the mortality rate is definitely higher in babies born by caesarean compared to those born naturally. This is most likely due to a caesarean bypassing some of the physiological changes that occur during vaginal birth.

Another debate is about the use of general versus regional anaesthesia (spinal block) when doing a caesarean. A fascinating fact about childbirth is that when a baby is born, it cries to expand its lungs but then quietens down for about an hour (unless it is in pain or there is some stimuli). This is possibly a mechanism to allow bonding between the mother and baby. New mothers often remember the moments following the birth of the child as extremely emotional and blissful. Contrastingly, mothers who are under general anaesthesia and not awake when their child is born bond less with the baby initially (some mothers do not even recognise the baby as their own). Thus, unless it is an emergency caesarean, a spinal block (which allows the mother to be awake and painless) is preferable over general anaesthesia.

Lastly, it is common tradition to cut the umbilical cord straight after the child is born. But is this okay? When the fetus is in the uterus, it shares its cardiovascular system with the placenta. The umbilical cord connects the two and carries blood to and fro. At any given point, the placenta contains 30~50% of the fetal blood. If the umbilical cord is suddenly cut, the fetus essentially loses this blood, being born in a state of low blood volume. If you look at the umbilical cord, you can see that it is about 1m in length, which is enough for the baby to be put next to the mother’s breasts for breastfeeding and bonding. Perhaps we are cutting the cord too soon, not letting the blood flow back from the placenta to the fetus.

If you think about it, humanity has been giving birth without too many problems to survive generation after generation for 200,000 years (otherwise we would not exist). Although the mortality rate was high, Mother Nature has optimised childbirth over time through evolution. Ergo, it is possible that modern medicine is intervening too much in a natural process. We must always consider whether medical advances are helpful or harmful to us.

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Posted in History & Literature

Hiring

Posted on by Jinavie

The Central Intelligence Agency (CIA) of the United States is famous for using a variety of hiring strategies to find agents who would be well-suited for spying. There were many strange and unique strategies among these. The following is a good example of a very strange, but simple and effective strategy.

First, put out a job advertisement on the newspaper. The ad tells people who are interested should come to a certain office at 7am on a certain day. The ad says nothing about what documents you need to bring, whether it is an interview or a test, or even what the job is. About a hundred applicants arrive on the day at 7am, but the office is empty with no employers or instructions. For two hours, no one comes and many impatient applicants complain that they fell for a prank and leave. An hour later, more people express frustration and leave, saying how rude the company is. By 1pm, about half the group has left, slamming the door behind them. By 5pm, only about a quarter remain. Finally, it becomes midnight. There are only one or two people left by this stage. These people are automatically hired.