Posted in Psychology & Medicine

Pica

Occasionally, there are news stories about a man who eats steel or a girl who likes to eat plastic. Such a condition where the person develops an appetite for a non-food substance is called pica. Pica is more common than one would think. The most common cases are those of dirt, clay and chalk, with the disorder being much more prevalent in children or pregnant women. Although pica is officially a mental disorder (possibly related to OCD), it is possible that it is a neurological mechanism to cure a certain mineral deficiency. For example, patients with coeliac diseases or hookworm infections tend to be iron-deficient and the substances they eat tend to contain iron. It is unclear how the brain knows what “food” to eat to cure a disease, but there are many cases where people subconsciously consume foods that would improve their health. According to a study, between 8% and 65% of people have had a sudden urge for a very strange appetite. However, as substances commonly involved in pica (such as dirt and ice) are solids, they can damage the oesophagus and the digestive tract. Also, they may contain toxic chemicals which can cause poisonings, making pica a potentially dangerous condition.

Posted in Philosophy

Monkeys And Acorns

A man living in the Song Dynasty had many monkeys. He was wary that he might not have enough food to feed the monkeys, so he implemented a rationing system, telling the monkeys “As we are short of food, I will limit the acorns you get to three in the morning and four in the evening”. The monkeys screamed and protested, so the man told the monkeys: “Then I will change it to four in the morning and three in the evening. The stupid monkeys could not figure out that the sum was the same and were overjoyed. This is the story behind the proverb: cho sam mo sa ("Three in the morning, four in the evening”, 조삼모사, 朝三暮四).

It is common to see people who cannot see the forest for the trees and only focus on the immediate gains, just like the monkeys. Although there might be some short-term benefit, the results will be the same (or worse) in the long run and not seeing this is very foolish. To lead a successful life one must have the insight to understand how the happiness gained now will affect the future and the wisdom to achieve the balance between short-term and long-term benefits. Too many people lack these qualities and fall into the trap of hire purchases, mortgages and frauds.

The monkeys made another critical mistake. If they protest against the man’s plans for a better future, he can just say “If you’re not happy, starve” and everything will be over. To throw away the future for a quick fix is an incredibly idiotic act.

Posted in Science & Nature

Microwave

The following are some strange things that happen when certain objects are placed in a microwave (and then turned on).

  • Never put metallic objects in a microwave. Metals act as an antenna, collecting the microwave and creating an electric current. This causes the metal to heat up, burning the food or melting plastic containers. Also, if the metal is pointy, it may cause an electric arc (sparks) which can be very dangerous. 
  • Ice alone does not melt in a microwave. This is because microwaves cause vibrations of particles to generate heat, but in ice the water molecules are tightly bonded and so vibration does not occur. 
  • Microwaves can cause something called superheating of liquids. This means that the liquid is heated to beyond its boiling temperature without boiling. A superheated liquid can spontaneously begin to boil in an explosive manner when disturbed. This is dangerous as it can mean that a cup of boiling hot water may suddenly explode in your face.
  • Certain foods are known to generate sparks in a microwave. For example, when two oblique slices of chilli pepper are placed near each other point-to-point, a flame sparks between the two points from the arcing electricity. Grapes do the same thing.
  • Some foods such as grapes and eggs explode in a microwave. This is because of the pressure building up within it from all the steam being released all at once. This is amplified with something like an ostrich egg where the shell is strong enough to contain an immense pressure. But when a certain pressure is reached, the egg will literally explode and send shrapnels of microwave pieces flying out like a bombshell.
  • A piece of garlic will spin rapidly in a microwave as garlic has a thin tube running on one side. As water evaporates, the vapours rush towards both ends causing the garlic to spin. Also, if you cut the bottom of a clove of garlic then microwave it for about 15 seconds, the pieces of garlic will pop out easily.
  • As explained above, metal conducts microwaves and generates a current. This is most obvious when a CD is placed in a microwave, where sparks dance on the surface (assuming the reflective surface is facing up). Similarly, a fluorescent tube will light up in a microwave from the electricity generated.
  • Placing an open flame, such as a lit candle, inside a microwave produces a very strange phenomenon. The naked flame will become ionised plasma and shoot up to the ceiling of the microwave. This is observed as a ball of light floating around. Note that this is extremely dangerous and most likely will destroy the microwave.

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Posted in Life & Happiness

Fried Chicken

Although it may be unhealthy, it cannot be denied that fried chicken is one of the most delicious foods in existence. The following is a simple recipe for fried chicken without using a deep frying machine.

Ingredients:

Chicken drumsticks x 4 (although any piece can be used)
Flour 50g
Egg x 1
Breadcrumbs 50g
Salt 1/2t
Cajun spice or paprika 1t
Canola oil

  1. Wash the chicken then season it with salt and cajun spice. It is good to rub oil on the chicken as well to keep it moist.
  2. Let the seasoning set in for about 10~15 minutes. Meanwhile, preheat the oven to 180°C and line an oven tray with tin foil.
  3. Pour the flour into a plastic zip-lock back. Place the chicken in the bag, seal it, then shake it to coat the chicken with the flour.
  4. Beat the egg then dip the chicken in the egg to coat it.
  5. Coat the chicken with breadcrumbs. You can sprinkle some thyme, oregano or parsley on top as well.
  6. Rub or spray some oil on the tin foil to prevent the chicken from sticking.
  7. Use a knife to make 2~3 deep gashes in the chicken. This helps it cook through.
  8. Arrange the chicken on the tray then put it in the oven for about 15 minutes until the top is golden.
  9. Flip the chicken over to make sure both sides are thoroughly cooked. Cook for another 10 minutes.
  10. When the outside is crisp and golden, take out the chicken and check that the inside is cooked well.
  11. Serve with some potato fries and vegetables.

Posted in Psychology & Medicine

Spinach

Spinach is a vegetable that is excellent for your health as it is rich in nutrients such as vitamins and minerals. If you ask someone the first two things that come to mind regarding spinach, they will most likely reply Popeye and iron. Popeye is a cartoon that began airing in the 1930’s and every child knows that the man gains superhuman powers from eating a can of spinach. In fact, after Popeye began airing, US consumption of spinach grew 33%. Most people believe that Popeye gains powers due to spinach having a high iron content. Thus, adults always tell children that if they want to be as strong as Popeye, they must eat their spinach.

Unfortunately, eating spinach does not make you as strong as Popeye. In fact, it is not even related to iron either. Firstly, the reason why Popeye eats spinach was because the producers wanted to advertise the high vitamin A content in spinach. Furthermore, spinach does not have a high iron content. The spinach iron myth originated from a German scientist named Emil von Wolff. In 1870, von Wolff was analysing the nutrition contents of different foods when he, from severe fatigue, accidentally misplaced a decimal point while recording the iron content of spinach. This led to spinach being known to have ten times the amount iron it actually has (to the level of red meat).

One problem with this is that this story is not true either. There are no detailed records of von Wolff’s experiments and no one knows if he misplaced a decimal point or not. The myth most likely originates from a 1980 article in The British Medical Journal that first brought up the story. Does that mean spinach is actually is a good source of iron? Wrong. Vegetarians often claim that spinach has iron levels close to red meat, but there is something about iron that they do not know. Many plants have a high iron content (it is found in chlorophyll which is used for photosynthesis), but this is mostly non-heme iron. There are two types of iron the human body can absorb: heme and non-heme. Heme iron can be used directly after absorption whereas non-heme iron needs to be metabolised by the liver to be usable. This takes a long time and is inefficient meaning it is far more effective to eat foods rich in heme iron. Plant iron is all non-heme iron while 40% of iron in red meat is heme iron, meaning it is a much better source of iron. Furthermore, spinach has a high oxalate content, which is an iron absorption inhibiting agent, making what little usable iron it has unabsorbable. 

In short, it is true that spinach has “iron” but as we cannot absorb it or use it, it practically has no iron content. But if you tell this to your parents and refuse to eat spinach, you may get into a lot of trouble.

Posted in Philosophy

Politics

The following is an excerpt from the Analects by Confucius, titled The Secret of Politics:

Confucius’ disciple Zi-gong asked him: “What is politics?”
Confucius replied: “The key to politics is to make food plentiful(足食), keep enough soldiers(足兵) and earn the people’s trust(民信).”

Zi-gong thought about this, but decided it was too hard to do all three. He asked again: “If you had to give up one, which would you choose?”
Confucius replied: “I would give up the soldiers.”

Zi-gong asked again: “If you had to give up one more thing, which would you choose?”
Confucius thought for a minute and said: “I would give up food. If you believe, you can withstand hunger for a while and withstand the hardships of war, but if you lose trust you will immediately lose everything.”

The character 信 stands for trust, which is believing in another person. Of course there must be trust among the people, but Confucius teaches us that the trust between the people and their leaders is the most important. In fact, with trust and faith you can overcome anything. If you can respect and trust in your leaders, you can endure hunger and at times, even summon the strength to defeat your enemies with your bare hands.

An administration that has lost the hearts of the people will fail.

Posted in Science & Nature

Umami

Normally when people think of “tastes”, they think of sweet, salty, sour and bitter (“spicy”, or piquance is not a taste). However, in 1985 the family of four basic tastes were introduced to a new member: umami. Umami, commonly known as “savouriness” is a taste that has had its own word in Asian countries (e.g. 감칠맛, or gamchilmaht in Korean) for thousands of years but has not had a proper English word until very recently (much like piquance). Umami is a portmanteau of two Japanese words: うまい(umai) and (mi), which means “delicious” and “taste” respectively.

Sweetness comes from glucose, saltiness from sodium and sourness from acids. Then where does umami come from? Umami is the taste born from glutamates, which is found in high concentrations in meat products, thus leading to the association between umami and the taste of meat. For example, bacon is known to have six different types of umami flavours, creating a unique and addictive taste. Another product high in glutamate is monosodium glutamate, or MSG. MSG is essentially glutamate plus a sodium ion and thus brings out the full taste of umami when added to food. As umami has a powerful effect of boosting appetite and having a slightly addictive property means that chefs like putting MSG in foods to boost sales. Contrary to popular belief that MSG is detrimental to your health, recent researches have shown that unless you have an allergy to it, MSG is safe to consume even in high concentrations.

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Posted in History & Literature

Sandwich

Although the concept of eating two pieces of bread with meat and vegetables in between has existed since the invention of bread, the word “sandwich” is a much more recent invention. 

During the 18th century, there was an aristocrat called John Montagu, 4th Earl of Sandwich who loved to gamble. He loved gambling so much that he barely had time to eat a proper meal, so he frequently ordered simple foods from his servants.

His favourite was two pieces of bread with sliced meat in between. Every time he gambled with his friends, he would order this snack from his servants and his friends would say “the same as Sandwich!” when ordering. This playful comment stuck over time and people began officially naming the type of food a “sandwich”.

A sandwich is the perfect snack invented just for those who have no time or are too lazy.

Posted in History & Literature

Whaling

The Faroe Islands are a group of islands between Scotland and Iceland in the North Atlantic Ocean. Although a small nation, they are known to the outside world for their tradition of whaling – specifically pilot whales that are native to the North Atlantic Ocean. The media often show photos of bloody shorelines with a line of whale carcasses, decrying the so-called “inhumane hunting” of the whales. The dramatic scene and cuteness of the whales seems to appeal to the masses and has caused quite a controversy regarding the Faroese tradition, known as grindadráp. However, the media often tells a misinformed story regarding the whaling. One thing to know is that Faroese whaling is fundamentally different to whaling seen in other parts of the world, such as Japanese whaling. 

The Faroese have been killing pilot whales for food for the past millennium and have done so in the most humane and sustainable way possible. Despite popular belief, the pilot whales are not endangered and in fact overpopulated in the North Atlantic Ocean. As they are carnivorous, an overpopulation of the whales causes a shortage in fish. Fishing is the major industry in the Faroe Islands and constitutes their livelihood; so ironically, the pilot whales can endanger the Faroese people by consuming all the fish in the surrounding sea. Thus, the Faroese kill a small portion of the whale population (roughly 0.1%, a completely sustainable rate) to balance the ecosystem while protecting their most important industry and their livelihood.

Faroese whaling is not commercial and only enough whales are killed to provide enough food for the people (equally distributed to the participating families). The killing is not for fun or money, but simply to support the lives of the people. As such, the Faroese have also come up with the most humane way to kill the animals.

When whaling season starts and the pilot whales come near the shore, “drives” are initiated where a semi-circle of boats herd nearby whales towards the shoreline (only whales near the shoreline are killed). When the whales approach the shore, the people use blunt blowhole hooks that catch the whales without causing wounds (unlike harpoons and spears) and draw them closer to shore. Only adult males are drawn in (no females or babies) and only enough that can be killed swiftly are drawn in.

Once drawn in, the men quickly use their knives to cut the spinal cord and artery supplying the brain, killing the whale within 15 seconds of being beached. It is the quickest and most painless way to kill the whales and only those who have been trained to do it properly are allowed to kill. As a major artery is cut and whales are big mammals, a large volume of blood is released, dying the sea a bloody red colour.
The whales are then divvied up equally, with no part of the whale going to waste. As only nearby whales are killed, sometimes no whales are killed for years.

Unfortunately, due to pollution in the ocean, there have been increasing levels of heavy metals such as mercury found in the whale meat. This is endangering the health of the island population and the deeply engrained tradition of grindadráp. The saddest part is that the pollution is from industrialised countries such as USA and European countries, not the Faroe Islands. Yet the Faroese have to put up with bigotry from those who do not understand the culture, process or the reasoning behind the tradition. If anything, it is by far more humane and sustainable than killing animals after a lifetime of captivity then sending them to a slaughterhouse.

It is extremely important to see the truth behind controversial issues such as this, as more often than not the truth is shrouded by bigotry and subjective comments by people who have only seen the issue through some photographs on the internet.

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(Notice the single, deep horizontal slash through the dorsal aspect of the spinal cord, just before the brainstem. Such a cut would immediately sever any pain signals and cause almost instant unconsciousness due to ischaemia of the brain.)

Posted in Philosophy

Town Musicians Of Bremen

Once upon a time, a donkey who had worked hard for his master all his life on a farm was about to be sold off simply because he was old. The donkey fled to Bremen where he hoped to be a travelling musician. On his way to Bremen, he met a cat, a dog and a rooster who were all placed in a similar predicament. The four animals decide to form a band of animal musicians. While travelling together, they came across a house full of delicious food and a warm fire. 

However, they soon found out the house was inhabited by robbers. The animals decided they should somehow chase away the robbers and ultimately came up with the plan of the rooster jumping on the cat’s back, who was on the dog’s back who was on the donkey’s back. The quartet began singing at the top of their voice. The robbers were startled by the strange sound and terrifying figure and ran for their lives, thinking the house was haunted. The musicians then feast on the food and spend a warm night in the house.

Later that night, the robbers returned and sent one of their members to scout the house. In the dimly lit room, he sees the cat’s eyes but believes it to be candlelight. At that moment, the cat scratched his face, the dog bit his leg, the donkey kicked the robber and the rooster chased him out the door. The robber then told his companions about how he was scratched by the long nails of a witch (cat), stabbed by an ogre’s blade (dog), hit by the club of a giant (donkey) and worst of all, chased away by the shrieks of a dragon (rooster). The robbers gave up on the house and the animals spent the rest of their lives in that house happily ever after.

The moral of this story is that even after being thrown away, if you stay optimistic and work through the troubles you can still live a happy life. A similar lesson is found in a quote by General Douglas MacArthur: “Old soldiers never die. They just fade away.”. If you have passion, dreams and a friend who has the same mindset, nothing is impossible.

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