Features
‘Sri Lankan geology allows hydro and solar power to be used in conjunction
Interview with CBE awardee Prof Ravi Silva
By Sajitha Prematunge
Every hour the Earth’s atmosphere receives enough solar radiation to meet electricity needs of every human being on Earth for a year. Consequently, the world’s greatest problem can be fixed with just one percent of solar radiation the earth receives. The catch? It’s exorbitant. Fulfilling energy needs has remained an insurmountable challenge for centuries as this huge influx of solar energy is wasted for want of a cost effective way of harnessing solar energy, at least until researchers, the likes of Prof Ravi Silva can fix it. Imagine a technology that would enable printing of solar cells using a process similar to that of printing a newspaper. It would enable production of square kilometres of organic solar cells at a fraction of the current cost, theoretically. This is the kind of cutting-edge technology Silva and his ilk are involved in. Following is an exclusive interview with recent CBE awardee Prof Ravi Silva.
UK-based scientist of Sri Lankan origin and Surrey University Advanced Technology Institute (ATI) Director, Professor Ravi Silva was recently awarded a CBE or Commander of the Order of the British Empire, one of the highest ranking Orders of the British Empire award, for his services to Science, Education and Research over the last three decades.
Silva joined the Cambridge University Engineering Department for his undergraduate and postgraduate work, immediately after his secondary education in Sri Lanka. He joined Surrey in 1995. He was one of the key investigators for the £10m ATI, established in 2002 with the hopes of bringing all solid state electronics and photonics research at Surrey into a dedicated institute. Silva has been its director of since 2005 and also heads the Nano-Electronics Centre (NEC), an interdisciplinary research activity. He helped set up one of the largest carbon nanotechnology laboratories at Surrey.
In 2013 he was elected a Distinguished Professor at Chonbuk National University and in 2016 a Visiting Professorship at Dalian Technology University, China. In April 2017 he was appointed Honarary Director to the Zengzhou Materials Genome Institute (ZMGI), China. In March 2018, he was elected joint Editor-in-Chief of Wiley’s Energy and Environmental Materials. More recently, he has set up the £4m industry-academia Nano-Manufacturing Centre and in 2019 the £1m Marcus Lee Printable Solar Cell Facility.
His research has resulted in over 620 presentations at international conferences, and over 600 journal papers, with circa 21,000 citations and won grants of over £30m over the last two decades. In 2002 he was awarded the Charles Vernon Boys Medal by the Institute of Physics, and in 2003 the IEE Achievement Award. The same year he was awarded the Albert Einstein Silver Medal and Javed Husain Prize by UNESCO for contributions to electronic devices. In 2003 the largest EPSRC Portfolio of £6.68M was awarded to Silva and his team on Integrated Electronics which examined nanoscale design features on the optical and photonic device properties. In 2004, SRIF award for £4M, to set up a Nano-Electronics Centre for multidisciplinary research, was awarded to Silva.
He was awarded the Royal Society Clifford Patterson Award for 2011. In 2014, he was awarded a premium medal by the Institute of Engineering and Technology (IET), the JJ Thompson Medal for contributions to Electrical and Electronic Engineering. In 2015, he won the Institute of Materials, Minerals & Mining (IOM3) premium award, the Platinum Medal for contributing to materials science, technology and industry. In 2016 he won the Government of Sri Lanka Presidential Award in recognition for many contributions in the field of nanotechnology.
Since 2005 he has worked with the National Science Foundation (NSF), Sri Lanka to develop nanotechnology as a vehicle to generate wealth and alleviate poverty in the country. Silva was on the advisory board of Imprimatur Ltd and the National Nanotechnology Initiative (NNI) of Sri Lanka. He was an Advisor to the Minister of Science and Technology in Sri Lanka, and helped set up the Sri Lanka Institute of NanoTechnology (SLINTec) and the Nano-Science Park NANCO (private) Ltd in 2008. He currently acts as an advisor to both these entities and sits on the director board. He has acted as advisor to many national and international organisations, including US, Korean, Japanese, Chinese, Indian, Sri Lankan, Singaporean, Saudi Arabian, Israeli, Hong Kong, Portuguese, Canadian, Brazilian and European governments.
His research interests encompass a wide range of activities with a focus in nanotechnology and renewables. Other fields of interest include electronic devices, sensors and X-ray detectors. “The area that is most significant at present is how to keep our planet safe for the next generation,” said Silva. He explained that climate change is an existential threat for humans, and we must reduce our carbon emissions. He pointed out that the best route to do so is with replacing fossil fuels with renewable energy. Much of his research at present looks at the fabrication and manufacture of new and cheap solar cells, together with battery storage that can act as an integrated solution to green energy provision.
Q:
Which of your research has been put to best practical use, in your opinion?
A:
There are a number of areas in which research conducted within my group has been put to good use. In the field of electronics, it is very difficult to pinpoint precisely where your devices are used as there are many thousands of devices and inventions in even basic consumer electronic systems. For example, patents from our group have been licensed to companies such as Philips, BAE systems, Airbus, Bombardier, Surrey Nano Systems and Silver Ray and they form components of a bigger system or application. The most obvious example of Nanotechnology developed in the group was in the winter Olympics at PyeongChang where the Hyundai Pavilion was covered with Vanta Black, the blackest man-made material in the world. This was also demonstrated through the paint on the BMW X6 model, ‘VBX6’ at the Frankfurt Motor show. These materials originated from research in my labs at Surrey.
Q: What are the contributions solar energy can make to drive the world to a carbon net zero position?
A:
Solar energy is crucial if the world is to go to a net carbon zero position. Typically, the Earth gets enough energy from the sun in one hour to power the entire population of earth for one year. Therefore, the current 80 percent use of fossil fuels to power the world must be decreased significantly in the next 50 years, to be replaced by green energy. In developed countries such as Germany there are predictions which show solar energy would make up 80 percent of the total energy use in 2100. This is simply due to the overwhelming evidence that points to these sources as the most appropriate green energy provider.
Q: Why are governments reluctant to commit fully to solar power?
A:
At present the cost of solar and the inbuilt infrastructure available for fossil fuels makes governments reluctant to examine other sources. The local energy generation and transmission system will need to be overhauled and new investments made in energy, supply, transmission, storage and distribution.
Q: What can Sri Lanka do to popularise renewable energy?
A:
Sri Lanka’s renewable energy efforts are mostly ad-hoc and requires coherent policy and planning. Education on the advantages of renewable energy and how it can be implemented can help. At present, should a full cost analysis be performed on solar energy, it will come up as the most cost-efficient energy provision available in countries such as Sri Lanka.
Q: How do you manage higher efficiency solar energy technology, while maintaining lower cost?
A:
The cost of solar energy provision has been coming down exponentially. If we take one of the measures to judge the cost of solar electricity, cost per Watt, in 1970 this was an eye watering US$74 per Watt. This dropped to below US$ 10 in 1990 and today this is below US$ 20 cents per Watt. The Obama regime ran the Sun Shot Challenge to push the cost of solar electricity below US$ 1 per Watt, as this was when it became competitive with fossils. We are well below that now, and the cost keeps getting lower. Current 450W solar modules can be obtained highly competitively below US 150 if it is bought in bulk.
Q: Yet you have admitted that energy is one thing that has defied all economic models, including the axiom of Supply and Demand. Why have solar energy expenses kept rising rather than coming down, with technological development?
A:
Adam Smith said supply and demand should dictate cost. In solar there is 10,000 times over supply of energy. The problem is the cost of solar cells. We are looking to reduce this with sprayable solar cells. But even today the cost of solar for large solar farms can be well below 10 cents US$, if the infrastructure is provided for the investment to take place. For example in India large solar farms have been set up with costs as low as US$ 4 cents per kilowatt hour with the number below US$ 2cents in Mexico. There is no reason to believe we cannot have similar low-cost solar electricity in Sri Lanka.
Q: What are energy cost drivers, and do they apply to the World Energy provision and by extension to Sri Lanka?
A:
Ease of production of energy, raw material provision and the infrastructure dictates the final costs. There is no reason to believe we cannot provide the raw materials needed, when this happens to be sun light. Furthermore, with the enviable hill country with hydroelectricity provision we have a ready-made battery to store energy with pumped hydro.
Q: Do you mean hydropower can be used in conjunction as a storage technology, to store solar energy during off peak hours or during the day and discharge it by night?
A:
Absolutely. Nature has blessed Sri Lanka with some wonderful geology to allow for this to be done at scale. The NSF and universities should be looking to build on this to provide the country with the ideal solutions to their energy needs. Pumped hydro can be used to store hydro-energy when there is too much electricity produced by solar energy, so it can be used in the nights. The 40 percent hydro-provision is near ideal to ensure base load needs are met, for the rest of the energy to come from solar and wind. I am also sure there will be large scale battery provisions coming soon, with companies such as Tesla and 8minutes already demonstrating this.
Q: What are smart grids and its benefits?
A:
If renewable energies are to contribute to nations energy provision, they need to be able to interface well with the current energy provision and transmission. In particular for solar and wind-based energy to feed-into the national grid, a robust energy network with smart grid provision will help. Smart grids also allow for smaller local networks to provide renewable energy in an efficient manner, having appropriate interfacing with the on-grid supply and often back-up energy storage provision.
Q: What obstacles delay power generation sectors from adopting smart grids?
A:
The singular obstacle is inertia and sticking to old infrastructure, without looking to plan ahead for future energy provision.
Q:
What are polymer cells or organic photovoltaics, and their benefits.
A: In the future, using polymer technology, we can produce solar cells with 15 percent efficiency at a fraction the cost of silicon solar cells. This is driven primarily by the very much lower material cost, together with the thousand-fold decrease in active materials used to make solar cells. By adding nanoparticles into the polymer solar cells you can improve the efficiency even further and thereby give better energy per cost. Under these circumstances the energy payback time is below six months.
Q: What is carbon electronics? And what are its applications for a developing country like Sri Lanka?
A:
Carbon electronics uses the element C for the fabrication of electronic devices. Nano-carbons such as graphene, carbon nanotubes and polymers are becoming more important on a daily basis to provide solutions in electronics, energy and structural materials.
For Sri Lanka, it can make a huge difference. Particularly when some of the highest quality graphene can be produced with the vein graphite available in the country. This can not only be used for next generation electronic devices, but also for lighting and even electrodes for batteries. Companies such as Ceylon Graphene Ltd. have been established in the Sri Lanka Institute of Nanotechnology (SLINTEC) to provide just this impetus to the national innovation eco-system.
Q: Where does carbon electronics factor in, solar energy generation?
A:
Polymer based carbons, particularly if mixed with nanomaterials can be used for next generation solar cells. Only a fraction of the material needed in Silicon solar cells, to produce high quality modules, is required when polymer based carbons are used as active materials.
Q: What are carbon electronics’ other benefits?
A:
We can also use the nano-carbon materials to make major components of the battery, such as its electrodes. So, not only energy scavenging, carbon electronics can also help in energy storage.
Q: What are the benefits of unlimited energy?
A:
Some say there is a significant correlation between national development and energy use per capita. The worlds most developed countries also have the highest per capita use of energy.
If we had unlimited energy, the world would be a very different place. With unlimited energy we can wipe out the poverty gaps between the nations; there will be enough energy to provide clean water to all using desalination technologies; we can wipe out famine with food crops grown under ideal conditions; we can ensure maximum energy is focussed on new drugs, vaccines and highly nutritious foods.
Q: What is your opinion on research culture in Sri Lanka Universities?
A:
Sri Lanka universities have high quality researchers, but less provision for them to be able to fully exploit their prowess to help the nation or have an enterprise culture to contribute to society. A step change is needed to motivate researchers to help elevate the country’s science and technology base with their efforts. High quality research should also be given fast track promotion within the sector.
Q:
In a technological perspective which areas are viable for expansion and which are not, for a country like Sri Lanka?
A:
Sri Lanka needs to motivate and energise the younger generation to contribute fully to the nation. Training in enterprise and spinouts should be made available with suitable grants for technologists to develop their inventions and products. The eco-system for entrepreneurship should be developed, with the universities taking a lead by example, on how they can value add to Sri Lankan raw materials and technologies. In the fields of nanotechnology, energy, materials, AI and new technologies they have much to offer.
Features
‘Lord Edgware Dies’
It has been some time since I read an Agatha Christie, the plot of which I cannot remember. So, I was delighted to find on the shelves of a friend Lord Edgware Dies, which I had a vague memory of, but no certainty about who had done it.
When I read it, I found that my memory of who was probably the killer was correct, but I could not be certain and the red herrings Christie threw in were so diverting that until almost the very end I wondered if I had been wrong.
The plot is very simple. Jane Wilkinson, who is married to Lord Edgware, tells him that she is desperate for a divorce since she is in love with a very proper Anglo-Catholic peer, Lord Melton, but Edgware refuses to divorce her. She asks Poirot to talk to him, which he does, and is surprised to find that Edgware has told Jane he is prepared to give her a divorce. This was, after he had categorically refused, through a letter, which Jane said she had not received.
That night Edgware is murdered, after Jane had been to see him, or so the butler said, and also Edgware’s secretary. But Jane had been that evening at a grand dinner many miles away, where a dozen fellow guests could swear to her presence.
There was a solution however to the mystery of two Jane Wilkinsons, namely a skilful impersonator called Carlotta Adams who, in the opening chapter had impersonated Jane Wilkinson, who had also been at the performance. But when Poirot goes to see her, he finds that she had been found dead on the morning after Edgware had been killed, of an overdose. And in her bag was a gold case, with a strange inscription, that contained the drug, along with a pair of pince-nez.
Her maid said she had written a letter to her sister in America and posted it the previous night. Poirot asks Inspector Japp to get the letter, and a transcript is received from America, and in it the name of Edgware’s nephew Ronald Marsh is mentioned; he had taken Carlotta to dinner after her performance, with which the book opens, and had then set her a challenge. Japp arrests Marsh, but Poirot is not happy and asks for the original of the letter, which the sister sends him. That shows that a page is missing, and the tear is obvious, though that raises the question as to why it had not simply been cut.
Matters are further complicated by the fact that Marsh had gone in a taxi to the Edgware house, along with Edgware’s daughter Geraldine, in the interval of an opera which had previously seemed to provide them with cast iron alibis. Geraldine had gone in to fetch her pearls so that Marsh could raise money he needed, and thus had an opportunity to kill Edgware, as did Marsh, for the driver said he had got out of the taxi while waiting and gone into the house.
Marsh explained why he had gone to the house on the night of the murder as having followed Bryan Martin, an American actor, who had been in love with Jane, whom he saw go into the house with a key. But there was no one visible when he entered, and Geraldine almost immediately came down and they left together. And Martin too has become an object of suspicion to Poirot, for he had been to see him before the murders were discovered with a story of being followed by a man with a gold tooth – a story Poirot immediately realized was false when he was asked how old the man was, and was told he was young, for young people did not have gold teeth.
A heap of French money Edgware had got for a trip to Paris was missing, but since Marsh had no need for it after his cousin’s offer of help, Poirot deduces that it must have been taken by the butler, who has disappeared. Christie has stressed that he is astonishingly handsome, unusual in a butler, and Poirot notes a resemblance to Martin, so he thinks the mysterious man going into the house must have been him.
Incidentally, later Poirot assumes that Edgware’s change of mind was because he was involved in some scandal, and I believe Christie intends us to see the cause of this in his handsome butler, though this is not specified.
Meanwhile, Poirot has asked Japp to find out the provenance of the case found in Carlotta’s handbag, and it turns out to have been made in Paris, specially commissioned, and collected by a woman with pince-nez.
But then another murder occurs—that of another guest at the grand dinner, which provided Jane with her alibi. The victim is an actor who had been bemused when Jane, at a lunch, thought the Judgment of Paris referred to the city. He told Hastings he wanted to see Poirot, but was killed before he could get to the appointment. Poirot had rushed there when told about his request, but it was too late.
Meanwhile, Poirot has tried out the pince-nez on Edgware’s secretary, but she could not see through these. It was only a chance remark heard outside the theatre that led him to try them out on Wilkinson’s maid Ellis, a spare pair that had been appropriated for the night of the murders.
Poirot then lays things out, having summoned Martin and told him that he probably suppressed Edgware’s letter, as he had been dropped by then and he did not want Jane to marry another. But after teasing Martin, Poirot says that Jane was in fact the murderer, and she got Carlotta to impersonate her at the dinner while she went to the house and killed her husband. After meeting Carlotta later and checking with her through a call that she had
not been rumbled, Jane had gone ahead with the murder – she put veronal into her drink and the case with veronal into the handbag. She forgot to take out the pince-nez she had used earlier to imitate an American. Carlotta had registered as the American in a hotel and Jane had gone to see her, and there they exchanged identities. After seen the letter, she made use of it by tearing off the page that referred to her, and the S of She, so that the person who had challenged Carlotta to impersonate her seemed to be a man.
There is a coda in which Jane, condemned to death, writes to Hastings, still full of pride at her ingenuity hoping she will be remembered.
Features
Desilt reservoirs, learn from our ancient irrigation systems
by Prof. O. A. Ileperuma
Silting of reservoirs is a major problem today affecting our hydropower production and irrigation systems. The main Mahaweli reservoirs are silted to a considerable extent reducing the water holding capacity of them. Due to poor soil management practices, floodwaters deposit large amounts of silt in these reservoirs. When the Polgolla reservoir was fully drained about two years back, one could see mountains of silt in the lower reaches of the reservoir. A rough estimate is that 50% of the total capacity of these reservoirs has been lost to siltation. This is a serious issue which affects not only power and agriculture but also flood control.
Our ancient irrigation systems ensured that desilting of reservoirs took place under royal decree where all users of the reservoirs were ordered to carry out desilting of reservoirs during the dry season. The clay thus collected was used in making bricks for the construction of great stupas which dot the landscape of our ancient kingdoms. This ensured that the reservoirs had their full capacity filled with water for the next cultivating season. Our ancient kings were clever enough not to construct reservoirs by blocking main rivers such as the Mahaweli. A classic example is the Minipe left canal where they tapped only the surface water of Mahaweli. Even the bigger tanks such as Nuwara Wewa and Parakrama Samudraya were fed with minor rivulets. There were also other ingenious features in the cascade irrigation systems built by the ancient kings, such as mud sluice canals and forest reservations between the reservoirs in the cascade system. These reservations helped trap silt and remove excess nutrients, which could otherwise contribute to increasing salinity as water flowed from one reservoir to another.
- Parakrama Samudraya
- Kalawewa
- Kotmale
A classic engineering marvel is the former Yoda Ela, which carries water from Kalawewa to Nuwara Wewa and Tissa Wewa. It is 87 km long although the straight distance between these points is only about 40 km. The gradient of this canal is about 10 cm per km or 6 inches per mile. Yodha Ela functions as a moving reservoir and feeds about 4,600 hectares of paddy lands. It is a winding canal with about 120 smaller reservoirs on its way. It was constructed during the reign of King Dhatusena around 459 AD and later expanded by King Parakramabahu by connecting more reservoirs to the network. Unfortunately, during the Mahaweli project our modern-day engineers constructed a concrete canal replacing the winding path of this Yoda Ela also called Jaya Ganga. This effectively removed the ability of the old Yoda Ela to remove silt and nutrients. The bank of this Ela has wet zone trees such as jak and areca nut growing well. They take up the nutrients from the flowing stream making the water suitable for irrigation later.
Ancient Mesopotamian civilisations depended on dams constructed along the two main rivers, Euphrates and Tigris. After continuous irrigation of their fields over several thousand years, salinity of the irrigated lands increased making them unsuitable for agriculture. People died due to famine and this clearly illustrates the danger of blocking main rivers for agriculture. There is scientific evidence that the salinity of paddy soils in the Mahaweli C area is increasing.
We saw the devastation caused by Cyclone Ditwah. The sluice gates of the Kotmale Reservoir were opened, and Kandy and Peradeniya were flooded. If the reservoir had had greater storage capacity, couldn’t the opening of the gates have been delayed? This may not be an argument that modern-day engineers would readily accept, and I am not an irrigation expert. These ideas may well be naïve. But most of us tend to think of reservoirs mainly in terms of hydropower generation and irrigation, while their role in flood control receives much less attention. The question therefore deserves serious consideration. Could restoring lost reservoir capacity through desilting help improve our ability to manage extreme rainfall and reduce flood risks?
Desilting our reservoirs should be considered a national priority.
Features
Losing out to Ethiopia
Export diversification – Missing the wood for the trees – Part III
by Gomi Senadhira
In Sri Lanka, the word “Ethiopia” is often used as disparaging slang to describe individuals or areas experiencing extreme poverty, starvation, or severe economic hardship. This linguistic habit originated in the 1980s with the Western media coverage of the devastating Ethiopian famine of 1983-85. That media coverage shocked the world but also left an outdated and offensive global stereotype that the country is permanently starving. Much has changed since then. By now, with an annual growth rate of around 9%, it is the fastest-growing economy in sub-Saharan Africa. Ethiopia has also emerged as a highly competitive exporter and is challenging not only its competitors in the region but also countries like Sri Lanka. This article is on how Sri Lanka has lost ground to Ethiopia (and a few other countries) in the GCC markets for agricultural and floricultural products.
Sri Lanka – A Pioneer in the Agriculture and Floricultural Market in the GCC
As discussed in Part II of this article, by the mid-1980s Sri Lanka had established a strong foothold in the GCC’s fruit, vegetable, and floricultural market. Geographical proximity and well-established shipping and air links gave Sri Lanka a strong comparative advantage over Southeast Asian and African nations. Thailand, Vietnam, and Kenya were not even in the market. At that time, Ethiopia was experiencing (as BBC news reports described) “a biblical famine”.
The market was not very large, but it was lucrative and growing. Trade Minister Lalith Athulathmudali as well as the Chairman of the Export Development Board, Victor Santiapillai, who visited Kuwait (and the GCC countries), recognised the market potential for these products and encouraged us to continue with our work. The minister was particularly keen to further develop links between the market for these products, exporters, and his Export Production Villages (EPVs). So, it was becoming a successful case not only for export diversification but also for transferring gains from exports directly to rural households.
From Trailblazer to Tailender
As a result, even by the beginning of this century Sri Lanka had a larger market share than most of its competitors from Asia or Africa. But since then, our competitiveness has weakened significantly. The tables below provide a comparative snapshot of Sri Lanka’s performance vis-à-vis Thailand, Vietnam, Kenya and Ethiopia in the GCC market for vegetables, fruits and floricultural products. As illustrated therein, in 2001 Sri Lanka was ahead of Thailand, Kenya and Ethiopia in this small but rapidly growing market. Since then, we have fallen behind Thailand, Kenya and many other countries in that lucrative market. If this trend continues, Sri Lanka will fall behind Ethiopia within the next few years. (See Table 1)
In the GCC market for vegetables (covered in HS chapter 07), Sri Lanka was ahead of most other competitors in 2001. As illustrated in Table 1 , Sri Lanka had failed to develop this market, while Thailand, Kenya, and even Ethiopia had very efficiently increased their market shares. The GCC is a market to which Sri Lanka can supply some vegetables, like cabbages, by sea. It appears Sri Lanka had also failed to exploit this mode of supply.
We can see a similar trend in the market for fruits. Vietnam, Kenya, and Thailand have emerged as major players, while exports from Sri Lanka have staggered on slowly. In this segment, Vietnam has emerged as a leading player during the last twenty years and the GCC imports from Viet Nam have shot up from US$44 thousand in 2001 to US$346 million by 2024. In part one of these articles, I discussed the remarkable increase of jackfruit exports from Vietnam “…just $3 million in 2015 to an impressive $236.8 million in 2023” while most of our jackfruit production rots under the trees. This explains how countries develop their markets, geographically and product-wise. (See Table 2)
Sri Lanka’s performance has been weakest in the market for floricultural products (HS Chapter 06), which groups live trees, cut flowers, and ornamental foliage. When we first entered the market in the 1980s, the market was dominated by the Netherlands, and Kenya and Ethiopia were not even in the market. At that time, we identified the Gulf states as a market where Sri Lanka could have a dominant presence due to geographical proximity. Even in 2001, Sri Lanka was ahead of Kenya, Ethiopia, and Thailand. But by now, Kenya has emerged as the dominant supplier. Ethiopia is also expanding its market share and is the third-largest exporter. (See Table 3)
Missing the Wood for the Trees
In the mid-1980s, Sri Lanka first established its foothold in the GCC market. Since then, Thailand, Vietnam, Kenya, and even Ethiopia have moved well ahead of us and have become leading players. Why did we lag behind in our export diversification efforts in general and, more particularly, in the GCC market?
The reasons are very clear. After the initial attempts in the 1980s and early 1990s, Sri Lanka has not been proactively involved in identifying, developing, and promoting new products and markets, or protecting and further developing new markets already established. The focus has simply been on traditional exports: tea, coconut, cinnamon, and garments, while other products were almost ignored. In essence, we have been and continue to focus intensely on a narrow group of products and markets, and we have lost sight of the bigger picture.
(The writer can be reached at senadhiragomi@gmail.com)
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