Tag: learning

Posted in Science & Nature

Brontosaurus

Posted on by Jinavie

Brontosaurus (“thunder lizard” in Latin) is one of the most well-known dinosaurs. It is the poster child of the sauropods, a group of massive four-legged dinosaurs with very long necks and tails, known as some of the largest animals to ever walk on land.

After going extinct around 66 million years ago, the Brontosaurus was rediscovered in fossil form in 1879 by palaeontologist O.C. Marsh, who is infamous for his rivalry with another palaeontologist called Edward Drinker Cope as part of the “Bone Wars”. The Bone Wars was the fierce competition between the two palaeontologists, involving aggressive digging to discover as many dinosaurs as possible, while both tried to slander and impede each other through dishonest, unprofessional means. This dispute resulted in rushed announcements of new discoveries sometimes, leading to fascinating stories such as Cope accidentally putting the skull of the Elasmosaurus on its tail instead of the neck.

So what does the historical context of the Bone Wars have to do with the Brontosaurus? In 1903, another palaeontologist argued that the Brontosaurus was actually a specimen of the already discovered Apatosaurus. Two years later, the American Museum of Natural History unveiled the first mounted sauropod skeleton and named it a Brontosaurus. However, they had accidentally used the skull of a different dinosaur called Camarasurus, mounted on the skeleton of an Apatosaurus. With no further evidence supporting Brontosaurus as a separate genus, the scientific community agreed that the Brontosaurus was really just an Apatosaurus.

Despite this news, Brontosaurus remained hugely popular amongst the general population thanks to its early publicity. At the same time, Brontosaurus not being a real genus of dinosaur became a popular factoid (false information accepted as fact due to popularity). In a field such as palaeontology where evidence can be scant or incomplete, such misclassification is common. For example, the Triceratops is in fact simply the juvenile form of another dinosaur named the Torosaur.

But then in 2015, a group of scientists used computer modelling to analyse sauropod fossil data including the original fossil discovered by Marsh. What they discovered was that there were enough differences between the Brontosaurus and Apatosaurus, such as differences in pelvic bone structure, to classify Brontosaurus as its own genus. After more than a century, the Brontosaurus has had its name cleared and restored to its former glory.

The story of the Brontosaurus is a great example of one of the principles in science: nothing is 100% true. Science never proclaims something as the one truth. We can hypothesise, support it with evidence and construct a theory that makes sense of the cosmos, but we can never be sure that we definitely have the answer. In the face of new evidence and re-examination of the analysis, what was once regarded as “truth” can easily be proven to be wrong.

This is an unpopular aspect of science, because people tend to want security and certainty to soothe their anxieties about not knowing. But instead, we get to stay curious and continuously question the nature of the universe and how everything works, making fascinating discoveries and learning something new every day.

For how boring would life be if we had nothing more to learn?

Posted in History & Literature

Headline

Posted on by Jinavie

With the advent of the internet, the media has become faster and more accessible than ever before. Nowadays, breaking news is reported within minutes and you can browse multiple different news agency at the click of a button. But speed and access has become a double-edged sword, with many articles following a trend of focussing less on the content (or the truth) and more on how sensational the headline is, so that more people will click on it (known as clickbait).

Sensational headlines have always been popular, particularly in tabloid journalism. Headlines such as “Are the government lying about event X?” or “Have scientists found the cure to cancer?” attract people as hypothetical questions allow journalists to report on something without conclusive facts or evidence. Luckily, there is an old journalistic adage that allows us to combat this.

Betteridge’s law of headlines was devised by technology journalist Ian Betteridge, based on an old journalistic principle. It states that: 

“Any headline that ends in a question mark can be answered by the word no”. 

If you apply this law to the above sensational articles, then you can avoid wasting time reading an article that will add nothing to your knowledge.

Learning is not only about acquiring knowledge, but also knowing what “knowledge” to avoid.

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Posted in Philosophy

Mary And The Black And White Room

Posted on by Jinavie

Mary is a brilliant scientist who specialises in colour. She knows everything about colour – the spectrum, wavelengths, properties of light, the mechanism of how human vision works… She knows exactly how a certain wavelength of light will excite the retina and what kind of electrical impulse it will send in the brain. However, Mary has never seen colour. She has lived all of her life in a black and white room and can only observe the world through a black and white TV screen. The question is: if Mary was to leave the room and see the colourful world for what it is, would she learn something new?

Considering that Mary already knows everything theoretical about colour, would her seeing colour change anything? Or is the experience of seeing a colour something that you cannot learn without actually experiencing it?

This was a thought experiment proposed by Frank Jackson to question the nature of knowledge. Is physical knowledge truly everything, or is there something more than that? In philosophy, there is a concept called qualia, which describes the subjective, qualitative properties of experiences. That is, experience is a unique type of knowledge that cannot be learnt without experiencing it first-hand.

A further expansion of this idea is the refutation of physicalism – the school of thought that argues that everything (including knowledge and the mind) is physical. The logic is that since Mary knew everything “physical” about colour before leaving the room, her learning “something’ (i.e. experience of colour) is a direct argument against all knowledge being physical, as she learnt something “new”.

Another way to look at it is this. Some things in life can only be learnt through experiencing it. It is not enough trying to learn about life and the world purely from stories and books. To truly learn everything, you must get out there and experience it yourself.

Posted in History & Literature

Han Suk-Bong

Posted on by Jinavie

Han Suk-Bong is a famous writer from the Joseon Dynasty (Korea during 14th to 19th century), who was praised as “the master writer of the East” even in the Ming Dynasty (China during 14th to 17th century). His writing and calligraphy were partly thanks to his inborn talent, but also because of his intense training and practise throughout his life. There is a famous story regarding his training.

Han Suk-Bong practised calligraphy since a young age by himself, practising every day. The villagers all praised his talent and his mother sent him to a famous temple to study. After four years of studying, Han missed his mother so much that he sneaked out during the night and returned home. When he told his mother that he there was nothing more for him to learn, she told him to turn the lights off and said: “I will slice rice cakes while you write, then we will compare our skills”. After the two silently did their best work in the darkness, they turned the light on and it was evident that Han’s letters were all crooked and unsightly while his mother’s rice cakes were perfectly sliced in even thickness. Han deeply repented his arrogance and realised there was so much more to learn. His mother told him off and told him not to set foot in the house again until he could write perfectly even with his eyes closed, just as she could slice rice cakes perfectly. Thanks to his mother’s passion for his education, Han became one of the most well-known masters of calligraphy and literature in the Far East.

The best type of parent is one who identifies a child’s natural talents early on and helps them develop those skills. If the child becomes lost, loses their way or fall into the pit of arrogance believing they are the best, it is the parent’s duty to correct them. The moment you believe that there is nothing more to learn, you become a failure.

Posted in Psychology & Medicine

Learned Helplessness

Posted on by Jinavie

The following is an incidental finding from an experiment studying conditioning in dogs. In stage 1, a dog was tied on a leash in a room with electrified floors to prevent it from running away and was shocked for a day. Next, the dog from stage 1 and another dog were left in the same room without any leashes, leaving the door opened so that they could run away when they were shocked. Although the dog that did not pass stage 1 (fresh dog) immediately ran to the next room, the dog from stage 1 just helplessly lay down on the floor, receiving the electric shock. In stage 3, the same dog from stage 1 was taught that going to the next room prevents it from getting shocked. However, even after learning this, the dog refused to move and stayed in the room and accepted the shock. It had learned helplessness.

Everyone has depressing moments in their lives, but when these repeat over time it can cause you to feel that life is an inescapable pit of despair. You will learn a sense of helplessness that no matter what you do, the result will be failure and disappointment. But the moment you accept this helplessness, the nightmarish fate that you loathe so much becomes reality. There is no such thing as fate or destiny. If you do not like the fate given to you, free yourself the restraints of life, break away from the fetters and pioneer a new future for yourself. 

Posted in Science & Nature

Alex The Parrot

Posted on by Jinavie

Alex (Avian Language EXperiment) was the name of an animal psychology experiment that ran for 30 years starting from 1977. The experiment was designed to see if birds could undertake complex problem solving and learn languages like primates. For this, Dr Irene Pepperberg bough an African grey parrot, named him Alex and started teaching him how to speak. Before Alex, scientists believed that animals needed a large enough brain like a primate to handle the complex problems related to language. But Alex proved otherwise.

Before Dr Pepperberg, scientists failed to establish any two-way communication with parrots. She used a new training technique called the model/rival technique, where two trainers act in front of the parrot to teach it things. The method is as follows. One trainer (the rival) shows the other trainer the desired student behaviour they want the parrot to learn. The other trainer then compliments the trainer and shows attention. The parrot sees that the behaviour gets the trainer’s attention and learns it to compete with the rival. This technique was extremely successful and Alex began picking up words at a very fast rate (technically it was more of a two-way communications code than “language”).

Once communication was possible, Dr Pepperberg taught Alex many different concepts. Over the course of his life, Alex learnt 150 words, how to differentiate between seven colours and five shapes and also understood the concept of numbers and sizes. If you showed Alex two objects, he could answer many questions regarding one object (thus showing that his response was not a conditioned one). For example, if you showed him a small blue key and a large green key, he could answer what colour the larger key was, or which one was the green key. Furthermore, if a plate full of objects of different colours and shapes was presented to him, he could correctly count how many green blocks (or any other shape or colour) there was among the objects. The important point here is that he could pick out just the green blocks, excluding green balls or blue blocks from his answers (showing he fully understood the question and could attribute more than one characteristic to one object). He knew how to express himself, such as saying “Wanna go back” when he was tired, and would give playful, incorrect answers when bored of the repetitious experiments. According to Dr Pepperberg, Alex had the intelligence equal to a dolphin, a great ape or a five year-old child. He also knew how to attain knowledge by asking questions, such as when he asked what colour he was to learn the word “grey”.

Alex, who told us so much about the intelligence of a parrot, unfortunately died in 2007. The night before he died, he said the following last words to Dr Pepperberg: “You be good. I love you”.

Posted in Psychology & Medicine

Transactive Memory

Posted on by Jinavie

It is common to find couples, families or teams where someone always asks another member about a certain memory, while the opposite happens for a different memory. For example, a mother might always consult his son about computers and technical difficulties, while the father might always consult the mother about his plans for the month. This kind of “shared memory” is named transactive memory, where a group becomes organised in a way to share memory around in an efficient manner. This is usually done by the group reorganising itself so that each member specialises in a certain field, with the other members only remembering that that person is the expert. This means that instead of memorising every field, you can simply remember who is the expert in that field. It is much like learning where the reference text is rather than learning the contents.

Although it may look like dependence, transactive memory is an extremely useful tool in tight groups such as a couple or a small team. By having members specialise in certain domains of knowledge, the group is able to expand their capacity to acquire knowledge and create innovation. Transactive memory allows for a group to become efficient and effective in learning and retrieving knowledge. Overall, it improves decision making processes and the efficiency of the group, allowing for better outcomes. This is achieved by the division of responsibilities from specialising, shortening the time needed for finding the appropriate knowledge (as everyone knows the “guy” or “gal” to go to) and the shared understanding of the teammates regarding the interpersonal relations in the team. This means that everyone knows exactly who to go to for a certain domain of knowledge, while understanding their strengths and weaknesses, allowing for well coordinated interactions. Because of this, transactive memory only works in groups with limited numbers, with the maximum number being similar to the Monkeysphere (150).

Many studies prove the effectiveness of transactive memory. It has been found that couples have much better memory recollection compared to when they are paired with a stranger. In the modern technological era, transactive memory has expanded to the internet, with studies showing that people are more likely to know the source of information (such as Wikipedia) rather than the actual information. Given the ease of access to the internet and large databases containing all the information we need, sometimes it is far more efficient learning how to find these sources rather than rote learning all the information.

Posted in History & Literature

Deal With The Devil

Posted on by Jinavie

Faust is a famous German legend telling the tale of a man who sold his soul to the devil in a deal. The legend has been retold in many forms, in both literary and artistic forms, with the most famous versions being Christopher Marlowe’s and Goethe’s. The story goes as follows:

Faust was a very knowledgeable scholar who grew bored and disappointed of earthly knowledge. To seek more knowledge, he summons the devil, Mephistopheles. Mephistopheles proposes a deal to Faust, suggesting that he will serve Faust with his magical powers and with knowledge beyond this world. In exchange, after a certain amount of time has passed he would seize Faust’s soul and send him to damnation for eternity. 

After making this pact, Faust proceeds to satisfy his wants by using the devil’s powers. Eventually he seduces a beautiful, innocent girl by the name of Gretchen, but ends up destroying her life instead of living a happy life with her. However, she is saved by her innocence and ascends to heaven. 

Faust, with his term now over and about to burn in the eternal inferno of Hell, is saved by God’s grace via his constant striving. It is also said that his salvation is largely brought on by Gretchen, now a symbol of the Eternal Feminine, pleading to God to save Faust. 

Although this is the tale that is familiar in modern times, earlier versions of the Faust story end in damnation, with the devil carrying away Faust’s irrevocably corrupt soul. Faust accepts his sins and his punishments, regretting making a pact with the devil and destroying the life of his beloved Gretchen.
Faust serves to remind us that although every person has a right to be happy and satisfy their wants, there are boundaries that must be followed. By satisfying one’s needs and wants by destroying someone’s life and causing harm, one is subject to eternal punishment.

It is fascinating to see that one could go to such length to attain more knowledge. Is ultimate knowledge worth your soul being damned to eternity? Or is it wiser to accept that the only way to gain true knowledge is by continuously learning and thinking rather than finding a shortcut?

Posted in Philosophy

Least Common Multiple

Posted on by Jinavie

The most common experience every people on Earth have with animals is with an ant. There are plenty of people around the world who have never seen a cat, dog, bee or snake. However, it is hard to meet someone who has never played with some ants once or twice. Interacting with ants is an experience that is common to all of us.

When observing an ant walking across our palm, we can find these basic facts:
Firstly, an ant moves its antenna to find out what is happening.
Secondly, an ant goes any where it can go.
Thirdly, if you block the path of an ant, the ant crawls on top of that hand.
Lastly, if you draw a line in front of ant with a wet finger, you can stop it in its tracks. The ant hesitates as if there is an invisible wall and eventually goes around it.

There is no one that does not know these facts. But this basic, childish knowledge that is shared between us and our ancestors is never used in our lives. Schools do not teach it as it has no practical use in finding a job. What we learn in school about ants is simply boring. Who would honestly find memorising the various parts of an ant’s anatomy fascinating?

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

Posted in Psychology & Medicine

Dunning-Kruger Effect

Posted on by Jinavie

People are very interesting animals that, despite possessing the most powerful brain out of all the species, exhibit many strange psychological phenomena. For example, in psychology there is a well-known cognitive bias (the act of subconsciously making bias while thinking) called the Dunning-Kruger effect. 
This effect states that people who are unskilled are more likely to fail to recognise their incompetence and rather overestimate their capabilities. It is most prevalent in cases where someone first learns a skill, such as singing at the karaoke, then believing that they are extremely skilled or an expert in the field when it comes to learning knowledge.

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This strange effect is caused by the belief that learning is an easy process. For example, it is simple to understand the basic principles of science, but it takes far more effort to understand the deeper, more complex pieces of knowledge to become an expert in the field. However, people are deluded into thinking that the time required for a beginner to become an amateur is equal to the time for an amateur to become an expert. This can be easily explained through the analogy of a role-playing game, where “levelling”, or gaining more experience, is much easier in the earlier levels compared to much later. For example, the time taken to go from level 1 to 30 may be equal to the time taken to go from level 30 to 33.

The Dunning-Kruger effect scientifically explains the proverbial frog in the well (who believes he is the best, not knowing that there is a bigger world). Also, this effect extends to those who are actually skilled, as it causes them to believe they are not as skilled and rather underestimate themselves. This is often due to them understanding that it is much more difficult to master a skill and that they are “nowhere near” that point. 

These two factors combine to produce a strange paradox where the less skilled are less likely to believe they are incompetent and rate themselves as more skilled than the expert. This is frequently seen on the internet or during debates and arguments.