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23 August 2024 at 4:29:04 pm

Deadly Commute

Mumbai has always taken pride in its local trains, which have been celebrated as the city’s lifeline. It has long been a democratic institution that carries millionaires and labourers alike, and a symbol of the resilience that Mumbaikars so often boast about. The brutal murder of a 22-year-old passenger inside a moving local has exposed a darker reality. The city’s most cherished public service is no longer merely overcrowded and uncomfortable but is becoming steadily unsafe. The victim,...

Deadly Commute

Mumbai has always taken pride in its local trains, which have been celebrated as the city’s lifeline. It has long been a democratic institution that carries millionaires and labourers alike, and a symbol of the resilience that Mumbaikars so often boast about. The brutal murder of a 22-year-old passenger inside a moving local has exposed a darker reality. The city’s most cherished public service is no longer merely overcrowded and uncomfortable but is becoming steadily unsafe. The victim, travelling in a first-class compartment of a Churchgate-Nallasopara fast local, became embroiled in an argument over whether the train door should be kept open during heavy rain. The disagreement escalated into fatal violence after the accused pulled out a knife and stabbed him in the abdomen. As blood pooled on the floor of the compartment, passengers merely stood there watched in horror. A video of the aftermath showed the alleged killer walking away with the weapon in hand without anybody stopping him. For years, a rough but effective social order prevailed in the Mumbai local train. While commuters may have jostled for space and exchanged harsh words, there remained an unwritten code of conduct for keeping outright criminality at bay. Mumbai’s trains have long been dangerous in one sense. Every year, hundreds die while crossing tracks, hanging from footboards or falling from overcrowded coaches. But passengers rarely feared being murdered inside the compartment itself. S Even more troubling was the reaction of those present. The footage suggests that dozens of passengers chose self-preservation over intervention. While few citizens would willingly confront an armed attacker, the images nonetheless reveal a growing atomisation of urban life. Millions travel together every day, but increasingly as strangers who feel no responsibility towards one another. Mumbai’s famed collective spirit has now become a slogan repeated only after disasters rather than a reality visible in everyday life. The authorities, too, have questions to answer. How did an individual carrying a knife manage to board and travel through one of the busiest suburban rail networks in the world? Why does visible security remain so sparse despite years of promises about surveillance, modernisation and passenger safety? The Railways have invested heavily in technology, announcements and infrastructure upgrades. Yet commuters continue to encounter inadequate policing and an absence of deterrence. The larger concern is cultural. Across India’s cities, there is evidence of rising public aggression. Minor disagreements increasingly escalate into violence. Road-rage incidents, neighbourhood disputes and social-media-fuelled confrontations frequently end in bloodshed. Patience, compromise and restraint appear to be in retreat. Mumbai likes to imagine itself as different from the rest of India. The local train murder suggests otherwise. A city is judged not by its skyline but by the safety of its ordinary spaces. When passengers can no longer assume that they will return home alive from a routine train journey, something fundamental has gone wrong.

Richard Feynman’s Bottomless Frontier

From a Caltech lecture hall to modern cleanrooms, Feynman’s vision of the atomic frontier continues to guide scientific ambition even today.

During the fourth year of my doctoral research, my Ph.D. advisor gifted me a humongous printed volume. It was an IEEE anthology of selected academic papers, on microfabrication and miniaturization, published over a period of 50 years. That beauty started with a transcript of Professor Richard Feynman’s famous classic talk given on December 29, 1959 at the annual meeting of the American Physical Society (Caltech) titled “There’s plenty of room at the bottom.” That piece was first published in the February 1960 issue of Caltech’s Engineering and Science journal, which still owns its copyright. But that IEEE anthology introduced me to the lecture.


It was 2015-16, I was deep inside the silicon world working 12 hours a day in a bunny suit, with a free-hand to waste as many ‘4-inch’s as I needed, but with a self-inflicted promise of getting the right devices out; the first fully functional MEMS wafer from that cleanroom. I had a beautiful white new Class 1000 at my disposal, a handful of machine technicians and operators to support me with my every need, and an unquestioning advisor with complete trust on my process capabilities. What followed after two years of ungodly experimental battles through 2015 to 2017 were tens of MEMS transducer filled wafers; on silicon, oxidized silicon and glass! And truth be told, I adored the glass ones more than myself.


I never looked back, and I am sure my work to show through the last 14 years have walked the talk. So, that’s not why I am writing today. The context here is that essay; that poetic piece of mathematical techno-logic which later would hook me to this micro come nano-world, and probably forever. What did Richard Phillips Feynman speak of in that lecture?


Radical Proposition

In a nutshell, Feynman explored the largely ignored potential of manipulating matter at an incredibly small scale. He argued that the laws of physics do not inherently prevent us from arranging atoms one by one; rather, our limitations are purely a matter of developing the necessary technical skill and tools. Feynman challenged the scientific community to reconsider how we store information.


He suggested that the entire twenty-four volumes of the Encyclopaedia Britannica could be written on the head of a pin by reducing the text scale by 25,000 times. Taking this to even an ultimate extreme, he showed that if we could use only about 100 atoms to store one ‘bit’ of information, every book ever written, which comes to roughly 24 million volumes, could fit into a space no larger than a business card.


To realize this vision, Feynman pointed to two primary areas of application. The first was biological systems, where he noted that biological cells are essentially tiny factories that store complex instructions in DNA and perform chemical operations at a molecular level, implying that such high-density storage and functional machineries are possible. The second was mechanical reproduction, where he proposed a method of “manufacturing by halves,” in which a set of master-slave hands would manufacture a smaller set of tools, which then could fabricate an even a smaller set, eventually reaching the atomic scale.


Breaking Rules

Now the fun begins. RFP would now propose that as we move into the sub-microscopic world, the rules of the game would completely change. Gravity being almost irrelevant, forces like surface tension and Van der Waals attraction would be incredibly strong. Furthermore, at the smallest levels, quantum mechanical effects like the uncertainty principle would dictate how machines and computers must be designed, presenting both a challenge and an opportunity for entirely new types of engineering.


To spark immediate interest in this ‘bottom-up’ approach, Feynman concluded his lecture by offering two $1,000 prizes. The first was for the person who could reduce the information on a page of a book to an area 1/25,000 smaller in linear scale, making it readable by an electron microscope. The second was for the construction of a working electric motor only of 1/64 cubic inch in volume.


Ultimately, Feynman’s message was that the ‘bottom’ is a vast, untapped frontier. He viewed the transition to the atomic scale not as a violation of physical law, but as the next logical step in human ingenuity. Now we know, that lecture laid the conceptual foundation for micro and nanofabrication by shifting the engineering focus from bulk material processing to the ‘bottom-up’ manipulation of individual atoms and molecules. This visionary perspective directly inspired the development of modern lithography and scanning probe techniques, transforming his theoretical “room at the bottom” into the practical realm of today’s semiconductor and materials science industries.


The scientific world primarily remembers Feynman primarily for his Nobel Prize in physics, his legendary wit, and his role in the Manhattan Project. However, it is this Caltech lecture, delivered almost 70 years ago, and unknowingly gifted to me by my advisor that truly reshaped my perspective. Who would have thought that his vision of a sub-microscopic frontier where we might one day “arrange the atoms the way we want” would transform an obscure young man’s understanding of what is possible and would ultimately define his scientific life. ‘The Master’ lives inside every obscure scientific opportunity that’s knowing or unknowingly waiting to arrive on the technological scene.


(The writer is a Lead Process Engineer with GE HealthCare in France and a columnist with four books to his credit. Views personal.)

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