Posted in History & Literature

The Raven

Edgar Allan Poe is quite possibly the father of horror literature, well-known for his macabre works such as mystery novels, poetry and critiques. His stories are uncanny and gripping at the same time, and it can only be described as “mad genius”. Among his most famous works is a poem called The Raven.

It is a story about a young scholar whose lover has passed on, and his eerie, dream-like conversation with a raven on a winter night. The poem repeats the word nevermore extensively, creating a powerful effect as its meaning varies for every stanza. The narrator constantly cries out to the raven, expressing pain and torment, to which the raven replies – cold and succinctly – “Nevermore”, depriving him of hope.

Here, the raven is a metaphor of the man’s anguish and his eternal devotion and love. Furthermore, as a raven is often a symbol of logical thought and darkness, it sets the atmosphere of the poem very nicely. Lastly, as the reader is left pondering whether the bird actually converses with the narrator, or simply repeating the same word meaninglessly, it brings upon a chill down the reader’s spine, as the man is placed in a perverse conflict between desire to forget and desire to remember. The raven leads him through his descent from weakness and frailty to confusion, and from confusion to madness.

However, the reason The Raven is so famous is not just because of its sinister mood, the metaphor of the young man’s sorrow and anguish or the powerful repetition of the word nevermore, but also because of the actual structure. Poe wrote the poem in the meter of trochaic octameter, where stressed syllables and unstressed syllables alternate to produce beautiful fluidity. The meter together with the rhyming scheme (including internal rhymes and alliterations) allows the poem to be read in a dreamy way, reinforcing the question of whether the raven comes to the man in reality or in his dream.

(Original poem after the break)

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Posted in History & Literature

Meaning Of Family

Father
And 
Mother

Love
You

Although the actual etymology of the word comes from the Latin word familia, meaning “members of a household”, perhaps this acronym best reflects the true meaning of the word.

Posted in Science & Nature

Mobius Strip

A piece of paper has two sides. However, a Möbius strip has only one side. Ergo, if you walk on a Möbius strip, you walk on both sides and end up on the opposite side on the same location you started at in one trip. Because it has one side, it also has one boundary. This means that if you cut a Möbius strip along its length, you end up with not two rings, but one thinner, longer loop with an extra twist.

A similar structure is the Klein bottle. This structure is a self-paradoxical, single curvature, as its opening meets with its base, making the inside and outside indistinguishable. The entry is the exit, the inside is the outside, and the top is the bottom.

Our universe might be such a space where there is no distinction between the beginning and the end.

Posted in History & Literature

Moon

As most people know, the Moon is Earth’s only satellite (or “moon”), and it circles the Earth from a distance of 360000km. This giant rock was most likely formed from a gargantuan heavenly body colliding into the young Earth, displacing material from it. 
The Moon also has oceans, but they are flat, barren rockbeds. As it has a geography, we see a pattern on the lunar surface, which people interpret as the Moon rabbit, Man on the Moon, crab, beautiful woman and whatever else they see through the power of pareidolia.

The Moon, which forms the basis of yin and yang with the Sun, has had a significant impact in every civilisation. In the East, the lunar calendar is still used and many festivals are set to it (such as the Lantern Festival and Mid-Autumn Festival). In the West, the Moon has been associated with lunacy, so called the “lunar effect”. Some people (including Aristotle) believe that people act more crazy and criminal when a full moon is up (werewolves and the Cheshire Cat’s “crescent moon” grin are also linked to this symbolism).

As such, the Moon has always been an important part of human societies. Without it, there would be no tides, the lunar calendar would be useless, the night sky would be darker, werewolves would not terrorise the forests, and most importantly, Sailor Moon would not be able to stop criminals in the name of justice.

Posted in Psychology & Medicine

Sneeze

A sneeze is caused by the body trying to remove something that is irritating the nasal cavity. To do this, it contracts many respiratory muscles instantly to create a powerful expiration. This produces a gush of air and the foreign material at a speed of over 150km/h, which can spread saliva and mucus at a range of over 2m. Therefore, not putting your hand over your mouth during a sneeze is an easy way to spread infections like the common cold.

An interesting fact is that one cannot open their eyes during a sneeze. This is not because of the urban legend that the eyeballs pop out if the eyes are open when sneezing, but part of the reflex and powerful contraction of muscles. Also, pinching between the two nostrils very hard can stop a sneeze reflex successfully.
Lastly, although sneezing is usually due to breathing in an irritant, some people have what is known as a photic sneeze reflex (also called the ACHOO syndrome), wherein they sneeze when stare into bright light such as the sun.

Posted in Psychology & Medicine

Babinski Reflex

Normally when you tickle or stroke the sole of your feet, the toes flex inwards. However, when a newborn’s feet are tickled or stroked, the toes spread outwards. This is known as the Babinski reflex, or Babinski sign. It is a primitive reflex that disappears before 12 months of age.
If this reflex is seen after that, including adults, it is a sign there is something wrong with the nervous system, especially the brainstem or the spinal cord.

A primitive reflex is one shown by newborns but disappears gradually as they develop. These include reflexes such as the walking reflex, swimming reflex and crawling reflex that shows actions that they have not yet learnt, or the rooting reflex and sucking reflex that ensures the baby’s survival.

Posted in History & Literature

Cattle

Alison and John are standing in the same cattle field at the same time. John can see twice as many cows as bulls. However, Alison can see the same number of bulls and cows in the field. How can this be, and how many bulls and cows are there in the field?

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Posted in Psychology & Medicine

Doppelganger

A doppelgänger is popularly known as a “double” of oneself, with the exact same appearance but usually with a completely different personality. 
It comes from German folklore (the word is German for “double walker”), where it is believed that seeing a doppelgänger is an omen of bad luck, possibly death. It is also said that meeting one’s own doppelgänger will result in one of the two dying. 
However, in modern times this concept of doppelgängers have been largely replaced by the first meaning, that of an alter ego who is only identical physically, and completely different persona-wise. This can sometimes overlap with the concept of an “evil twin”, as a doppelgänger is sometimes described to have an inverse personality, values and motives.

Although in most cases a doppelgänger is just a look-alike, it could be the result of the brain projecting an identical image of oneself in another space. 
It has been discovered that electrical stimulation of an area of the brain called the left temporoparietal junction causes the sensation that someone is next to you. This “someone” has the same shape and body posture as the subject, and is sometimes described as having a completely different personality. It is reported that this sensation is extremely unpleasant.
The cause of this phenomenon is that the area of the brain is associated with self-image, such as body posture, location and proprioception (sense of what oneself appears as in space). Therefore, a disruption leads to the self-image being projected elsewhere, which the brain then interprets as a doppelgänger.

There are similar mental disorders such as the Capgras delusion (belief that someone close has been replaced by a doppelgänger), Fregoli delusion (belief that many people are the same person in disguise) and subjective doubles (belief that one’s own doppelgänger is acting on its own to interfere with one’s life).

Doppelgängers are common plot devices in many works, especially fantasy and science fiction where the aforementioned “evil twin” concept is used. However, the doppelgänger may also be described as benevolent or simply a clone.
They are notably used in How I Met Your Mother, where each character has a doppelgänger completely different to their persona (e.g. Stripper Lily, Fertility Expert Barney).

 image

Posted in Science & Nature

Ant Sequence

Find the rule for the following sequence of numbers:

1
11
21
1211
111221
312211
13112221
1113213211

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