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Improving the Neighborhood

December 6, 2010

மொறட்டுவப் பல்கலைக்கழத்தில் கணணிப் பொறியியல் பிரிவில் இறுதியாண்டில் எமது விருப்பத் தெரிவாக இரண்டு பாடங்களை தெரிவு செய்ய முடியும். அப்படி நானும் எனது நண்பர்களான நிமல் மற்றும் ரமணன் ஆகியோர் கணித மாணவர்களுக்கு கசக்கும் என எண்ணும் பாடமான Bio Informatics இனை தெரிவு செய்தோம். சுவாரசியமான பாடம். பலவிதமான புதிய தேடல்களை எங்களுக்குள் விதைத்தது அந்த பாடம். அந்தப் பாடத்தில் வருகின்ற பலசொற்பதங்கள் எமது மூளையில் உற்கார வைக்க முடியாமல் போனாலும் உயிரியல் கூர்ப்புக் கொள்கைகளும் அதனோடு இணைந்த புதிய கண்டு பிடிப்புக்களும், உயிர் கருக்களின் கருமையத்தில் காணப்படும் தகவல்களில் ஏற்படும் மாற்றங்களும் அந்தத் தகவல்கள் எவ்வாறு பரிமாற்றப்படுகின்றன என்ற தகவல் பரிமாற்றச் செயல்முறைகளும் இன்றும் தெளிவாக ஞாபக வன்தகட்டில் பதிந்துள்ளது.

அதன் பின்னர் தேடலில் சிக்கிய சில சுவாரசியமான ஆனால் வித்தியாசமான சிந்தனைகள் உங்களுக்கா. மன்னிக்கவும் தமிழில் எழுதினால் ஏராளமான சொற்பதங்களினை நேரடியாக ஆங்கித்தில் எழுத வேண்டியிருக்கும் என்பதனால் முற்றுமுழுதாக ஆங்கிலத்தில் தொடர்கின்றேன்.மாற்று உயிர்(Alternate Life forms) ஏன் உயிரினக் கூர்ப்பில் ஏற்பட்டிருக்கக் கூடாது எனத் தொடர்கின்றது இந்த பகிர்வு.

There is an argument about a Hypothetical question on Alternate Life forms in Earth. We all know, all the known living organisms have the Carbon based DNA (Deoxyribo Nucleic Acid) structures. And this DNA consists of two long polymer strand, with backbones made of sugars and phosphate groups which are joined by Ester bonds. Sugar elements consists of Carbon, Hydrogen and Oxygen. So Basically a DNA strand consist of Carbon, Oxygen, Hydrogen, and Phosphates. Further, the backbone of the DNA strand is made from alternating phosphate and sugar residues.

Well now you clear, the DNA has the basic elements such as Carbon, Oxygen, Hydrogen, and Phosphates. Now the Scientist are thinking about why an organisms should it have this Carbon, Hydrogen and Phosphates in their DNA strand. Can a Life form from other kinds of molecules? The Scientists’ question is, Whether or not, those ‘Thing’s which have a dynamic ‘structure’ like DNA but,

1 – instead of Carbon, other alternate but the same chemical properties; Silicon, Germanium.
2 – instead of Hydrogen; Lithium

3 – instead of Phosphorus; Arsenic, Nitrogen


can create a life on earth? Or are they already exist on earth? Or had they existed? If those ‘Thing’s found, and those have a function like self-reproduction/duplication, that can be considered as ‘Alternate Life form’s. But still this is a hypothetical argument.

Lets think about further; “Improving the Neighborhood” which is one page, science fiction, monologue short story by Arthur C. Clarke. A Germanium based Life form is telling about it’s ancestors who switched from being Carbon based DNA life form. Story is simple. But its open up lots of question in scientific work.

“Improving the Neighborhood” – From NATURE magazine, Nov. 5, 1999 [ ARTHUR C. CLARKE ]

The death of a nearby star system comes as a relief — and a warning.

At last, after feats of information processing that taxed our resources to the limit, we have solved the long-standing mystery of the Double Nova. Even now, we have interpreted only a small fraction of the radio and optical messages from the culture that perished so spectacularly, but the main facts – astonishing though they are — seem beyond dispute.

Our late neighbours evolved on a world much like our own planet, at such a distance from its sun that water was normally liquid. After a long period of barbarism, they began to develop technologies using readily available materials and sources of energy. Their first machines — like ours — depended on chemical reactions involving the elements hydrogen, carbon and oxygen.

Inevitably, they constructed vehicles for moving on land and sea, as well as through the atmosphere and out into space. After discovering electricity, they quickly developed telecommunications devices, including the radio transmitters that first alerted us to their existence. Although the moving images these provided revealed their appearance and behaviour, most of our understanding of their history and eventual fate has been derived from the complex symbols that they used to record information.

Shortly before the end, they encountered an energy crisis, partly triggered by their enormous physical size and violent activity. For a while, the widespread use of uranium fission and hydrogen fusion postponed the inevitable. Then, driven by necessity, they made desperate attempts to find superior alternatives. After several false starts, involving low-temperature nuclear reactions of scientific interest but no practical value, they succeeded in tapping the quantum fluctuations that occur at the very foundations of space-time. This gave them access to a virtually infinite source of energy.

What happened next is still a matter of conjecture. It may have been an industrial accident, or an attempt by one of their many competing organizations to gain advantage over another. In any event, by mishandling the ultimate forces of the Universe, they triggered a cataclysm which detonated their own planet — and, very shortly afterwards, its single large moon.

Although the annihilation of any intelligent beings should be deplored, it is impossible to feel much regret in this particular case. The history of these huge creatures contains countless episodes of violence, against their own species and the numerous others that occupied their planet. Whether they would have made the necessary transition — as we did, ages ago — from carbon- to germanium-based consciousness, has been the subject of much debate. It is quite surpprising what they were able to achieve, as massive individual entities exchanging information at a pitiably low data rate — often by very short-range vibrations in their atmosphere!

They were apparently on the verge of developing the necessary technology that would have allowed them to abandon their clumsy, chemically fuelled bodies and thus achieve multiple connectivity: had they succeeded, they might well have been a serious danger to all the civilizations of our Local Cluster.

Let us ensure that such a situation never arises again.


{ I found this document in – [CTRL] ARTHUR C. CLARKE: IMPROVING THE NEIGHBORHOOD . Unchal-Blog not responsible for any legal copyrights. }

Categories: அறிவியல், எனக்குத் தெரிந்தவை, கதை, படித்தவை ரசித்தவை

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மூளா அழிந்திடல் வேண்டும்.

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சந்தோஷம் கொண்டிருக்கச் செய்வாய்.
என்றும் சந்தோஷம் கொண்டிருக்கச் செய்வாய்…

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