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Distribution: yearly

  • IIT-B pioneers Nanostructured Hard-Carbon Florets (NCF)

    Nanostructured Hard-Carbon Florets (NCF)

    Central Idea

    • Scientists at IIT Bombay have achieved a groundbreaking development by creating a material known as Nanostructured Hard-Carbon Florets (NCF).
    • This innovative material boasts an unparalleled solar-thermal conversion efficiency, surpassing 87%.

    What is Nanostructured Hard-Carbon Florets (NCF)?

    • NCF Development: It is a material capable of absorbing and storing an exceptional amount of heat energy.
    • Stunning Efficiency: It exhibits an extraordinary solar-thermal conversion efficiency of over 87%, absorbing more than 97% of sunlight’s ultraviolet, visible, and infrared components.
    • NCF Manufacturing: The material is manufactured through chemical vapor deposition, making it easily scalable and suitable for large-scale production.

    Science behind NCF’s Efficiency

    • NCF’s success lies in its unique structure, resembling interconnected carbon cones.
    • This structure combines high photon thermalization (efficiently converting light into heat) with low phonon thermal conductivity (retaining heat without loss).

    Applications of NCF

    • Wide Range: NCF can be applied to diverse surfaces, including paper, elastomer, metal, and terracotta clay, making it adaptable for various contexts.
    • Versatility: The generated heat can be efficiently transferred to air or water, making NCF ideal for smoke-free space heating, particularly beneficial in cold regions like Leh and Ladakh.
    • Eco-Friendly and Cost-Effective: Unlike conventional coatings based on heavy metals like chromium (Cr) or nickel (Ni), NCF coatings do not harm the environment

    Beyond Solar Thermal Conversion

    • Heating Rooms and Spaces: Hollow copper tubes coated with NCF can heat air to over 72 degrees Celsius, demonstrating potential applications in space heating.
    • Efficient Water Vapor Conversion: NCFs have achieved an astonishing water vapor conversion efficiency of 186%, surpassing commercial solar stills.
    • Sustainable Energy Solution: This groundbreaking technology provides a green solution to the global energy crisis, supporting the transition to sustainable energy sources.
    • Commercialization and Recognition: The project is on the path to commercialization through the establishment of a company at IIT Bombay’s Society for Innovation and Entrepreneurship. It has received accolades and support, highlighting its potential to revolutionize the solar-thermal energy market in India and contribute to decarbonization.

  • Understanding the ‘Prisoner’s Dilemma’: A Lesson in Cooperation

    Prisoner's Dilemma

    Central Idea

    • Defence Minister invoked the concept of the “Prisoner’s Dilemma” to emphasize the importance of international collaboration over competing interests.
    • He highlighted the need for countries to find solutions that promote cooperation, trust-building, and risk mitigation in international relations.

    What is the Prisoner’s Dilemma?

    • Game Theory Basis: The Prisoner’s Dilemma is a renowned concept in Game Theory, a scientific branch that studies decision-making in various scenarios.
    • Complex Decision-Making: It illustrates that real-life decisions involve complexity and uncertainty, and outcomes depend on the actions of others.
    • Paradox of Conflict: When applied to international relations, it reveals situations where countries engage in actions, such as arms races, driven by mutual fear and mistrust.

    Prisoner’s Dilemma Scenario

    • Crime Investigation: Imagine two individuals, A and B, facing questioning for a crime without strong evidence.
    • Police Offer: The police offer them a choice:
      1. If one implicates the other, the informant goes free, while the implicated receives a 15-year jail term.
      2. If both stay silent, both serve one year in prison.
      3. If both confess, they each get 10 years.

    Prisoner’s Dilemma Matrix:

    A Stays Silent A Confesses
    B Stays Silent A: 1 year, B: 1 year A: 15 years, B: 0 years
    B Confesses A: 0 years, B: 15 years A: 10 years, B: 10 years

    Dilemma and Decision

    • Optimal Outcome: On the surface, staying silent seems best, resulting in both serving just one year in prison.
    • Uncertainty: However, if one stays silent, they risk a 15-year sentence if the other implicates them.
    • Paradox: To avoid the maximum penalty, confessing becomes the rational choice if trust in the other’s silence is uncertain.
    • Cooperation Ideal: The best outcome lies in cooperation, where both prisoners stay silent, serving only one year.

    Real-Life Applications

    • Business Strategy: Similar dilemmas occur in business, such as price wars between companies selling identical products. Cooperation to maintain sustainable pricing can lead to healthier profits.
    • Geopolitical Agreements: Countries can avoid ruinous arms races and protect their economies by establishing ground rules in geopolitics, fostering cooperation over competition.

  • Transport of Cargo by Railways: Issues and Suggestions

    cargo

    Central Idea

    • Rail transport has long been a cost-effective means of moving bulk cargo.

    Promoting Railway Cargo: Key Policy Initiatives

    • Recognizing its importance in reducing overall logistics costs and promoting sustainable transportation, the Government of India has introduced two key policies:
    1. PM GatiShakti (PMGS) policy for a National Master Plan (NMP): PMGS focuses on creating a seamless multi-modal transport network in India, leveraging technology for coordinated infrastructure planning.
    2. National Logistics Policy (NLP), 2022: NLP aims to establish a national logistics portal and integrate platforms across various ministries to streamline cargo movement.
    • These policies aim to revolutionize the Indian transportation landscape by fostering infrastructure development, technology integration, and green mobility initiatives.

    Barriers to IR’s Bulk Cargo Share

    • Non-Price Barriers: IR faces challenges in maintaining its share of bulk cargo, partially due to non-price barriers. To counter this, IR should reduce these barriers and distribute transaction costs more equitably.
    • Capital-Intensive Siding: Railway sidings are capital-intensive and favor large industries, leading to higher logistics costs for smaller entities, such as many cement plants.

    Initiatives in Bulk Cargo Transportation

    • Private Freight Terminals (PFTs): The introduction of PFTs and relaxation of operating conditions have facilitated specialized cargo movement, including automobiles and fly ash.
    • Common-User Facilities: To reduce logistics costs and encourage patronage of IR, common-user facilities at cargo aggregation and dispersal points in mining clusters, industrial areas, and large cities are essential.
    • Collaboration with States: Collaboration with State governments is crucial, as they possess knowledge of regional clusters and can play a pivotal role in planning industrial and mining activities.

    Exploring New Commodities and Efficiency Measures

    • Fly Ash Transportation: The IR should actively explore the potential of transporting fly ash, aligning with the Ministry of Environment and Forests’ guidelines. This entails retrofitting power plant sidings with fly ash loading facilities.
    • Innovative Wagon Design: The IR should liberalize wagon design to accommodate higher and more efficient loading for various commodities, promoting versatility.
    • Environmental Considerations: Environmental regulations should be mode-agnostic and based on cargo quantity and environmental impact potential. This will prevent cargo from shifting to road transport due to cumbersome rail loading requirements.

    Revamping Parcel Transportation

    • Challenges: The IR’s existing strategy for moving general cargo relies on passenger trains or special heavy parcel van (VPH) trains, but both have experienced setbacks, with a 15% drop in loading leased parcel vans and an 8% decline in full parcel trains.
    • High Tariffs: One contributing factor to the decline is the high tariff, with premium and Rajdhani rates surpassing truck rates when factoring in first and last-mile costs. Exceptions exist for cargo destined to the northeast.
    • Other Challenges: The issues also include inadequate terminals, inconsistent weighbridges, excessive penal charges, unreliable transit times, complex booking and delivery processes, and self-imposed environmental constraints.
    • VPH Parcel Trains: These have proven ineffective and should be discontinued. A covered wagon, specifically a Covered Bogie Wagon Type with Air Brake and Heavy Load (BCNHL), can carry 700% more cargo with 45% more volume. Even if P scale rates are halved, revenue generated would be 3.5 times that of VPH trains.

    Containerization Conundrum:

    • Expectations vs. Reality: IR hoped that private container train operators (CTOs) would boost general cargo movement through containerization. However, 15 years post-privatization, domestic cargo carried by containers constitutes a mere 1% of IR’s loading and 0.3% of the nation’s total freight, primarily due to high haulage rates and market risks.
    • Shipment Size Challenge: General cargo typically involves shipment sizes ranging from a few to hundreds of tonnes. The IR’s current services do not cater to the needs of this diverse segment, creating a gap in service provision.

    Future Strategies

    • Segmentation: General cargo can be categorized as highly time-sensitive (HTSG), medium time-sensitive (MTSG), and low time-sensitive (LTSG).
    • HTSG Cargo: Valuable goods or perishables should continue to be transported by passenger trains. Attaching parcel vans to popular trains can substantially increase parcel loading capacity and revenue.
    • MTSG and LTSG Cargo: These price-sensitive categories should be transported under IR freight rates, which are cost-effective compared to truck rates. Individual wagon bookings should be permitted, even if a train isn’t fully loaded, ensuring timely movement.
    • Policy and Mindset Change: IR should adopt a flexible approach to freight tariff rules, including freight of any kind (FAK) for wagon loads in the tariff table. Single-wagon indents should be encouraged.
    • Incentives and Aggregators: Tariffs may be adjusted based on quantity loaded to promote volumetric loading. Cargo aggregators should be incentivized through policy adjustments.
    • Future Prospects: With concerted efforts, the IR can load substantial general cargo tonnage in the coming years, capitalizing on the existing infrastructure and industry capabilities.

    Conclusion

    • The Indian Railways stands at a critical juncture in transforming cargo transportation for a more sustainable and efficient future.
    • With the support of visionary policies, collaborative efforts, and a proactive approach to diversification and environmental challenges, IR can reassert its position as a key player in India’s logistics landscape.

  • Kathaprasangam: An Art Form’s Century-Long Journey

    Kathaprasangam

    Central Idea

    • Kathaprasangam began as a medium to narrate stories of oppression, untouchability, and human resilience.
    • Today, it finds a place of relevance and renewal in the digital age, captivating audiences, both young and old.

    Kathaprasangam

    • Kathaprasangam is a stage art form of Kerala, which was popular in the mid-twentieth century.
    • Kathaprasangam owes its inception to Kumaranasan (1873-1924), a Malayalam poet who aimed to educate and inspire underprivileged sections of society.
    • He sought to propagate the principles of Sree Narayana Guru and his poems.
    • It started a century ago, touching on themes of oppression, untouchability, and human triumphs.
    • It uses a blend of prose and song, accompanied by a harmonium and tabla, to retell stories.
    • Young performers compete in this art form, earning marks that influence their promotions.
    • It is celebrated for its ability to communicate with urgency and directness, addressing societal issues.

    Relevance in Modern Context

    • Kathaprasangam, born out of the fight against casteism and superstitions, holds even more significance today as religious identities are asserted with violence, posing a threat to societal harmony.
    • While newer forms of entertainment have gained popularity, they still attract young audiences eager to learn and share stories using new media platforms.

  • Salt Consumption and Health: Striking a Delicate Balance

    Central Idea

    • Salt is an essential component of our diet, adding flavor to our food and serving vital bodily functions.
    • However, excessive salt intake can lead to health issues, including high blood pressure.

    Salt Intake in India

    • In India, a recent national survey revealed that men consume 8.9 grams, while women intake 7.1 grams of salt daily (Prashant Mathur et al., Scientific Reports, 2023).
    • While the World Health Organization recommends a daily salt intake of 5 grams, the global average is much higher at 10.8 grams.

    Salt and Health Implications

    • Diverse Health Effects: Extensive research in animals and human surveys consistently link high salt consumption to kidney, brain, vascular, and immune system diseases. Conditions such as kidney stones and osteoporosis are associated with excessive sodium intake.
    • Global Impact: Excessive salt intake contributes to approximately five million deaths worldwide annually, underscoring the global health impact of salt-related health issues.

    The Yanomami Example

    • The Yanomami people, living in the Amazon rainforest, follow a foraging lifestyle and consume a diet primarily composed of Cassava, plantains, fruit, fish, and occasionally tapir.
    • Interestingly, they use peppers for flavor but do not use salt.
    • Their daily salt intake is less than one gram, yet they maintain excellent health and fitness.

    Salt and Obesity Connection

    • Balancing Act: While our bodies require salt for essential functions, excessive salt consumption can lead to health problems, including obesity.
    • Metabolic Impact: High salt intake impairs metabolism and increases the size of adipocytes, the cells that store fat, contributing to obesity.
    • Dietary Preferences: There is a connection between a preference for high-fat and salty foods. Experiments with mice showed that those exposed to high-fat diets during gestation preferred salty water.

    Reducing Salt Intake and Blood Pressure

    • Population Studies: Reducing salt intake by five to eight grams daily can lead to a 4 mmHg drop in systolic blood pressure and a lower risk of cardiovascular disease, as demonstrated in population studies.
    • Clinical Trials: Antihypertensive drugs, which lower blood pressure, show similar results, with an average reduction of 5 mmHg.
    • Salt Alternatives: Replacing normal salt with a mixture of 75% sodium chloride and 25% potassium chloride reduced systolic blood pressure by 3.3 mmHg in a Chinese population study.
    • Caution for Elderly: Reducing salt intake may pose risks for elderly adults, particularly if they are taking blood pressure medication, as it could lead to hypotension and falls.

  • Will QR Codes improve access to Food Labels?

    qr code food

    Central Idea

    • The Food Safety and Standards Authority of India (FSSAI) has recommended the incorporation of QR codes on food products, a significant step toward ensuring food safety and accessibility, especially for visually impaired individuals.
    • This move holds paramount importance in a country with one of the world’s largest markets for packaged foods and a rising burden of non-communicable diseases (NCDs), largely driven by the consumption of pre-packaged foods.

    QR Code move by FSSAI

    • Comprehensive Data: QR codes will contain extensive product information, including ingredients, nutritional facts, allergens, manufacturing date, best before/expiry/use-by date, allergen warnings, and customer contact information.
    • Compliance: This initiative aligns with the FSSAI’s Food Safety and Standards (Labelling and Display) Regulations, 2020, and the Rights of Persons with Disabilities Act, 2016, emphasizing accessibility for individuals with disabilities.

    QR Code Origins

    • Invention: QR codes, two-dimensional matrix barcodes, was invented in 1994 by the Japanese company Denso Wave for labelling automobile parts.
    • Enhancing Brand Image: For food manufacturers, QR codes offer advantages such as improving brand image, fostering customer loyalty, and enhancing operational efficiency.

    Significance of the Initiative

    • India’s Market Dynamics: India’s burgeoning market for packaged foods, coupled with a surge in NCDs, underscores the need for informed consumer choices.
    • Consumer Rights: The initiative empowers consumers to make informed decisions and verify if the product aligns with its advertised attributes.
    • Front-of-Pack Labelling: The FSSAI is urged to combine QR codes for visually impaired individuals with front-of-pack labelling (FOPL) warning labels, ensuring a comprehensive approach.

    Global Trends in QR Usage

    • Top Users: Countries like the U.S., India, France, and the U.K. are among the leading users of QR codes.
    • Market Growth: The global packaged food market, estimated at $303.26 billion in 2019, continues to expand, with QR codes playing a pivotal role in providing consumers with essential product information.
    • Consumer Preference: Consumers increasingly consider food packaging as important as the product itself, with QR codes serving as a technology that enhances information accessibility and influences buying behaviour.

    Conclusion

    • The introduction of QR codes on food products by the FSSAI is a crucial step toward enhancing food safety and ensuring consumers have access to comprehensive product information.
    • In an era of rising health concerns and growing markets for packaged foods, this initiative empowers consumers to make informed choices and underscores the importance of clear food labelling.
    • QR codes are emerging as a global trend, simplifying information access and improving consumer experiences.

  • Cloud Seeding

    cloud seeding

    Central Idea

    • Solapur, a city with limited rainfall due to its location on the leeward side of the Western Ghats, witnessed an 18% relative enhancement in rainfall through a cloud seeding experiment.

    What is Cloud Seeding?

    Explanation
    Definition Weather modification technique to enhance precipitation.
    Objective Increase rainfall or snowfall in areas facing water scarcity or drought.
    Seeding Agents Silver iodide, calcium chloride, potassium iodide, sodium chloride, etc.
    Suitable Clouds Typically convective clouds with moisture and vertical motion.
    Methods of Dispersion Aircraft, rockets, ground-based generators, drones.
    Environmental Impact Generally considered safe with minimal environmental impact.
    Effectiveness Variable; depends on weather conditions and cloud characteristics.

    About CAIPEEX Experiment

    • The initiative, known as the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX phase-4), sought to investigate the effectiveness of hygroscopic seeding in deep convective clouds.
    • Over two hours after cloud seeding, an additional 8.67mm of rainfall was recorded, resulting in 867 million litres of augmented water availability.

    Importance of the Experiment

    • Growing NCD Burden: As India grapples with a rising burden of non-communicable diseases (NCDs), exacerbated by the consumption of pre-packaged foods, informed consumer choices and food safety become paramount.
    • Cloud Seeding Efficacy: The experiment underscores cloud seeding as an effective strategy for enhancing rainfall, particularly in regions with suitable conditions.
    • Cost-Benefit Analysis: The research evaluates the cost-effectiveness of cloud seeding, estimating the cost of producing water through cloud seeding at 18 paise per litre.

    Key Findings and Methodology

    • Randomized Seeding Experiment: The study selected 276 convective clouds, with 150 subjected to seeding and 122 serving as the control group.
    • Criteria for Seeding: Clouds with characteristics such as significant liquid water content, vertical motion indicative of cloud growth, and depth exceeding one kilometre were targeted.
    • Seeding Agent: Calcium chloride flares were employed for cloud seeding, ensuring optimal dispersion and entry into growing clouds.
    • Rainfall Enhancement: Seeded clouds produced more rainfall than unseeded ones, resulting in an 18% relative enhancement.

    Implications and Future Prospects

    • Water Management: While cloud seeding alone cannot alleviate droughts, it can contribute to an 18% increase in rainfall and partially address water requirements.
    • Cost Reduction: Utilizing indigenous seeding aircraft could reduce costs by over 50%, making cloud seeding more accessible.
    • High-Resolution Numerical Model: The study has developed a numerical model to help stakeholders identify target locations, suitable clouds for seeding, and effective strategies for enhancing rainfall.

  • Criminal Procedure (Identification) Act: Balancing Privacy and Law Enforcement

    Central Idea

    • In April 2022, the Indian Parliament passed the Criminal Procedure (Identification) Act (CrPI).
    • It enabled law enforcement agencies to collect and analyze physical and biological samples, including retina and iris scans of arrested individuals.

    Why in the news now?

    • While the rules governing the Act were notified in September 2022, full implementation is pending as the National Crime Records Bureau (NCRB), the nodal agency, is still formulating guidelines and Standard Operating Procedures (SOPs).
    • This legislation replaces the antiquated Identification of Prisoners Act, 1920, which primarily focused on collecting fingerprints, footprints, and photographs of certain convicted and non-convicted individuals.

    CrPI Act: Purpose of the Legislation

    • Modernization: The CrPI Act modernizes the process of capturing and recording biometric data and other measurements, supplanting outdated methods.
    • Data Utilization: The Act facilitates the use of advanced techniques for capturing and recording body measurements, providing law enforcement with more comprehensive data.

    Role of the NCRB

    • Central Repository: The NCRB is tasked with storing, processing, sharing, disseminating, and destroying measurement records.
    • Common Database: Impressions collected at any police station will be stored in a central database accessible to authorized police and prison officials nationwide.
    • Technical Specifications: The NCRB will define equipment specifications for measurement collection, methods for handling and storing data compatible with the NCRB database, and the IT systems to be employed for measurements.
    • Authorized Personnel: The Act extends measurement collection authority to police and prison officials, individuals skilled in measurement collection, registered medical practitioners, and authorized personnel.
    • Data Retention: Records are to be retained for 75 years.

    Implementation Status

    • Fingerprinting: Police have been trained to record fingerprints through the National Automated Fingerprint Identification System (NAFIS), which assigns a unique National Fingerprint Number (NFN) to suspects.
    • Challenges: The provision for iris scanners, DNA collection, and facial recognition systems has not been fully realized. NAFIS workstations are operational in many states, but challenges persist.

    Challenges and Concerns

    • Privacy Concerns: During debates in Parliament, opposition members raised concerns about the violation of fundamental rights, including the right to privacy.
    • Data Protection: Questions have arisen about the safeguarding of DNA samples and facial recognition data.
    • Lack of Awareness: Many officers are unaware of the rules specifying that measurements of individuals detained or arrested under certain sections of the law should not be recorded.
    • Data Destruction: Individuals are responsible for requesting the destruction and disposal of their records from the central database if they have been falsely implicated or acquitted, which poses challenges.
    • Right to Be Forgotten: Advocacy groups have emphasized the need to consider the “Right to Be Forgotten” in data retention policies.
    • Training and Scope: Proper training and clear guidelines for DNA sample handling and storage are needed, and the scope of DNA collection in various types of crimes remains unclear.
    • Connectivity Issues: Smaller states face connectivity challenges, hindering the fulfilment of secured Internet lease line requirements for data protection.

    Conclusion

    • The CrPI Act represents a significant step toward modernizing law enforcement data collection techniques.
    • However, concerns related to privacy, data protection, and training, along with connectivity issues, underscore the need for comprehensive guidelines and safeguards to balance the imperatives of law enforcement with individual rights and data security.

  • What is the ‘SIM Swap Scam’ — and how can you protect yourself?

    sim swap scam

    Central Idea

    • In recent years, the SIM swap scam has emerged as a significant threat to individuals’ financial security.
    • This fraudulent scheme exploits the link between physical SIM cards and banking applications, allowing scammers to gain access to victim’s bank accounts and personal information.

    SIM Swap Scam: An Overview

    • Exploiting Technological Advances: The SIM swap scam capitalizes on the integration of banking applications with phone numbers, enabling the generation of OTPs (One-Time Passwords) and the receipt of critical bank-related messages.
    • Acquiring Personal Data: Scammers begin by collecting victims’ personal details, including phone numbers, bank account information, and addresses, often through phishing or vishing (voice phishing) techniques. Phishing involves sending malware-laden links through emails or messages to steal personal data.
    • Forging Victim Identity: Armed with the stolen data, fraudsters visit a mobile operator’s retail outlet, impersonating the victim with forged ID proof. They falsely report the theft of the victim’s SIM card and/or mobile phone. As a result, they obtain a duplicate SIM card. Notably, fraudsters can secure a duplicate SIM even if the original is still functional. All activation messages and information are directed to the scammer rather than the victim.

    Why do victims receive Missed Calls?

    • Strategic Communication: In contrast to typical scams that involve tricking individuals into divulging OTPs and private data during phone calls, the SIM swap scam operates differently.
    • Distraction Tactic: Fraudsters initiate missed calls to their targets, prompting victims to check their phones and potentially ignore network connectivity issues.
    • SIM Exchange Execution: Perpetrators use these missed calls as a diversion while they execute the SIM swap. Once the SIM is swapped, fraudsters gain control over all calls and messages through the victim’s SIM, allowing them to initiate transactions unnoticed.

    How do scammers withdraw money?

    • Phishing Information: After acquiring personal data through phishing attacks, scammers use this information to access bank portals and generate OTPs required for fund withdrawal.
    • OTP Access: Having control over the victim’s SIM card, fraudsters receive all OTPs, enabling them to authenticate transactions and steal money.
    • Data Sources: Accused individuals purchase data from hackers involved in data breaches or from online portals. Data breaches often involve private companies losing vast amounts of customer data.
    • Example: In April, Rentomojo, an electronics and furniture rental company, reported a data breach, acknowledging unauthorized access to customer data due to a cloud misconfiguration.

    Arrests and Challenges

    • Absence of Arrests: Delhi Police has not made any arrests related to the SIM swap scam. The accused effectively evaded capture by discarding duplicate SIMs and operating from multiple locations.
    • Cryptocurrency Conversion: Stolen funds are often converted into cryptocurrency, making tracking Bitcoin or other cryptocurrency transactions impossible due to encryption.

    Protecting Yourself from SIM Swap Fraud

    • Stay Vigilant: Be cautious of vishing or phishing attacks and avoid clicking on suspicious links or sharing sensitive information.
    • Don’t Ignore Missed Calls: Don’t ignore missed calls or switch off your phone, especially if you receive multiple missed calls. Contact your mobile operator immediately if such activity occurs.
    • Regularly Update Passwords: Change bank account passwords regularly for added security.
    • Set Up Alerts: Register for regular SMS and email alerts for banking transactions to stay informed.
    • Report Fraud: In case of fraud, promptly contact your bank authorities to block your account and prevent further fraud.

  • Why the Lewis Model has worked in China, not in India?

    Central Idea

    • In 1954, the renowned Saint Lucian economist, Sir William Arthur Lewis, presented a groundbreaking theory that suggested developing countries with a surplus labor force could achieve significant industrialization.
    • He envisioned a shift of labor from subsistence agriculture to the expanding manufacturing sector.
    • However, the Indian experience over the years has shown that this model has not unfolded exactly as Lewis had anticipated.

    What is the Lewis Model?

    • Lewis’s Theory: Sir William Arthur Lewis’s influential essay, ‘Economic Development with Unlimited Supplies of Labor,’ proposed that countries with surplus labor could industrialize by paying wages just high enough to attract workers away from family farms.
    • Key Assumptions: The model assumed that higher wages in the manufacturing sector would match the additional output produced, leading to the creation and expansion of industries without limits.
    • Bottlenecks: The primary constraints to this labor transfer were the availability of capital and natural resources, which these countries often lacked relative to their population.

    India’s Deviation from the Model

    • Historical Perspective: In the early 1990s, agriculture employed about two-thirds of India’s workforce.
    • Limited Impact of Manufacturing: While the share of agriculture in employment declined to 48.9% by 2011-12, manufacturing’s share only marginally increased from 10.4% to 12.6% during the same period.
    • Recent Trends: The farm sector’s share increased temporarily due to the Covid-19 pandemic, reaching 46.5% in 2022-23.
    • Manufacturing’s Decline: Conversely, manufacturing’s share dropped to 11.4% in 2022-23.
    • Shift within Subsistence Sectors: Labor movement primarily occurs within subsistence sectors, such as low-paid services and construction, rather than towards manufacturing or high-productivity services.

    lewis model

    State-Level Variations

    • Gujarat’s Exception: Gujarat stands out with nearly 24% of its workforce employed in manufacturing, mirroring Lewis’s model.
    • Industry and Agriculture: Gujarat’s workforce in agriculture remains relatively high compared to other states.

    China’s Model vs. India’s Reality

    • China’s Success: China leveraged surplus rural labor to become “the world’s factory” during the late 20th century.
    • India’s Challenges: India still has surplus labor working in subsistence sectors, but the path to conventional employment opportunities is narrowing.
    • Technological Disruption: Manufacturing is increasingly capital-intensive, incorporating labor-saving and labor-displacing technologies.
    • New Economic Development Model: NITI Aayog is exploring alternative avenues for job creation, emphasizing activities related to agriculture, such as aggregation, processing, transportation, and bio-based industries.
    • Bio-Based Opportunities: Crop residues, bio-fuels, bio-based products, and supply chain services offer potential employment options linked to agriculture.

    Conclusion

    • India’s journey towards economic transformation has deviated from the classic Lewis model.
    • The changing nature of manufacturing and the need for a reimagined labour transition call for innovative approaches that recognize the country’s unique circumstances and opportunities in sectors beyond traditional agriculture.
    • NITI Aayog’s exploration of alternative development models signifies a shift toward addressing contemporary challenges and fostering sustainable economic growth.