851: LIFE PRINCIPLES ON STATED PRINCIPLES SERIES

 

Shared my Life Principles on the Stated Principle Series.

 

Link to the site:-

https://app.stated.in/principles/air-marshal-anil-khosla

 

Your journey spans more than four decades in the Indian Air Force, fighter operations, command, instruction, strategic planning, capability development, modernisation and senior national leadership. You have also carried those experiences into research, writing, mentoring and strategic thought after retirement. Rather than asking you to recount your career, we would like to understand the principles and lessons that shaped your thinking, decisions and leadership across these different stages.

 

  1. You began your career as a fighter pilot and went on to command squadrons, operational bases and major formations before serving as Vice Chief of the Air Staff. What principle helped you remain effective as the scale of responsibility grew?

I consider myself highly privileged to have served in the Indian Air Force, where I had the opportunity to operate fighter aircraft, assume command positions, collaborate with various organisations, and hold senior appointments. My service also included overseeing operations such as Doklam and Balakot.

During my career, I observed that as one progresses, the scope of responsibilities and the challenges encountered also expand. It is essential to adopt appropriate guiding principles for these challenges. I divide my service career into three distinct phases.

The first phase, which I call the ‘worker phase,’ emphasises individual performance. During this period, the guiding principles I adhered to included “take the initiative and make the first move”, as overcoming inertia is often challenging. By taking the first step, subsequent steps tend to become easier. My primary principle was to “set ambitious goals while taking incremental steps towards achieving them”. Additionally, I believed in full involvement in every task, i.e. giving 100%. I also believed that failure is an inherent part of life; one should not get discouraged by setbacks, but instead learn from them and try again.

The second phase is termed the ‘supervisory phase,’ where the focus shifts to overseeing and ensuring others complete tasks. This includes leadership roles such as commanding squadrons and stations. I was fortunate to command two important Indian Air Force air bases (Ambala and Jaisalmer). From this experience, I learned the importance of adaptability, i.e. “playing with the cards you’re dealt”. A relevant maritime adage states, ‘If you cannot change the wind, adjust your sails.’ In this stage, careful planning and organisation are essential. Effective planning requires addressing all possible contingencies to make the plans adaptable, flexible, and resilient. To implement and monitor these plans successfully, you need appropriate mechanisms, including reviews and mid-course adjustments.  Crisis management and problem-solving are essential leadership skills during this phase. My personal hobby is puzzle solving, and I follow a fundamental principle: break complex problems into smaller, manageable parts to identify solutions more easily. On the other hand, crises are unpredictable and can present numerous unexpected challenges. My approach aligns with aviation practices: immediate action, subsequent actions, and long-term preventive actions. By applying common sense and acting quickly, one can contain and manage crises effectively and prevent escalation. Subsequent actions involve controlling the situation and implementing corrective measures. Long-term, predictive actions focus on preventing recurrence, allowing thoughtful planning to avoid similar crises.

The third phase, known as the ‘leadership phase,’ involves decision-making and setting long-term objectives. Inspiring and motivating others is paramount. I firmly believe a leader should have a vision of the organisation’s future, emphasising long-term gains over short-term objectives. As a leader, calculated risk-taking is essential, but impulsive decisions should be avoided. A vital guiding principle I follow is delegation: entrust tasks to capable individuals. Trying to do everything oneself is counterproductive, like “keeping a dog but barking yourself”. These guiding principles have been instrumental in fulfilling my duties across various stages of my service career.

 

  1. Military leadership often requires decisions when time is limited, information is incomplete, and the consequences are significant. What have you learned about making difficult decisions under pressure, and what should young leaders understand about responsibility when the outcome is uncertain?

This question has two aspects. One relates to decision-making, and the other to younger leaders’ responsibility when outcomes are uncertain.

I believe that decision-making constitutes both an art and a science. This perspective stems from the understanding that the decision-making process is highly scientific, while its application requires artistry. Additionally, as one progresses to higher positions within an organisation or in life, the significance and impact of one’s decisions become considerably greater. In other words, many people are affected by your decisions, and their effects can last a very long time.

It is essential to make deliberate, well-considered decisions rather than act impulsively. The art of decision-making can be refined through consistent practice and the effective utilisation of available tools. One such tool involves relying on one’s common sense, intuitions, and instincts. As experience accrues, these intuitions and instincts are enhanced and can play a significant role in the decision-making process. Furthermore, seeking counsel from trusted advisors is advisable; however, the individual remains responsible for the final decision. Therefore, it is imperative to assess the potential outcomes of decisions against both personal core values and organisational principles to reduce the risk of errors. Additionally, consideration of the long-term consequences of decisions is crucial. It is also recommended that decisions should not be made under emotional duress, as this can increase the likelihood of errors. A useful method I have used is listing the advantages and disadvantages, which helps clarify the decision-making process. Documenting these factors can promote clearer and more objective thinking.

The second aspect of your inquiry concerns the responsibilities inherent to young leaders. In my view, these responsibilities stem from adhering to and developing the principles of accountability, reliability, and dedication. These qualities are of paramount importance. Accountability is established when the fundamental principle is that “it is my job and my responsibility.” Reliability means that when a task is assigned, the person assigning it can be confident it will be completed on time and to a high standard. Dedication, as discussed earlier, means committing fully (100%) to the task at hand. Perseverance is another important aspect: continuing until you complete the task successfully. Another important aspect for young leaders is the ability to deal with failure. Failure will happen, but in those cases, the person should have the broad shoulders to accept it and own it, rather than pass the buck and blame someone else.

 

  1. You have led people in operational, instructional and strategic environments. What makes a team dependable when circumstances become difficult, and what principles have you followed to build trust, accountability and a culture of high performance?

Team spirit is an important part of life, not only in services but also in personal and professional life. The guiding principle is “To go fast, go alone; to go far, go with your team”. At a young age and in junior ranks, one should learn to work with and be part of the team. In senior appointments, it is essential to build a team and keep it together, motivated, and focused on organisational goals.

For team building, I used to draw inspiration from the car. I drew an analogy that decision-makers are like drivers. They decide where the vehicle should move, which direction it should go, and at what speed. Middle-level supervisors function as the steering mechanism, facilitating the vehicle’s response to the driver’s commands, while employees are the other components that ensure the vehicle works. Any malfunction or misalignment of these components adversely affects the entire system. Effective management is required for the vehicle to operate smoothly. I employed a similar approach when managing an organisation.

Maintaining the Same Tyre Pressure Across All Wheels. Ensuring the car tyres are inflated to the correct, uniform level is extremely important for safety, longevity, and good vehicle handling. You need to check the tyres periodically and inflate or deflate them as needed to maintain the same optimum pressure in all tyres. Similarly, human resources in any group also need to behave in a conducive manner. At times, factors like overconfidence/underconfidence, excessive eagerness/callousness, and ego can make individuals behave irrationally and ignore the important principles of teamwork. A team member may sometimes need a boost (encouragement). At the same time, there may be a requirement to control and regulate others. A good manager and leader should know when to do that. Take special care when regulating and controlling to avoid permanent damage to enthusiasm (praise loudly, blame softly). It is best to do so privately and use a suitable leadership style (i.e., with a little explanation).

Wheel Alignment. Proper wheel alignment is essential for the vehicle to move steadily in the intended direction without pulling to one side. Similarly, all team members must work together toward the intended organisational goal. This is one of the leader’s or manager’s key tasks, and it requires constant effort to keep team members together and focused.

 Wheel Rotation. Tyre wear and tear is never uniform across all four wheels of a vehicle. Hence, to ensure uniform wear of all four tyres, it is advisable to interchange tyre positions periodically. Tyre rotation is crucial for longer tyre life and better performance. Similarly, human beings also need periodic changes in tasks and challenges. Stuck in one type of job, they tend to stagnate, which adversely affects their performance. However, introducing changes too often is also not good for the organisation. An effective leader knows when to introduce change to avoid stagnation among their members.

 Wheel Balancing. Wheel balancing in the wheel/tyre combination is important for a smooth, stable drive, reduced tyre wear, and eliminating vibrations. In team functioning, maintaining a balance between the task and providing the wherewithal to execute it is very important. It is the job of the leader and the manager to provide the correct amount and quality of resources for the allotted task.

 Spare Wheel. A vehicle has a spare wheel to cater for unforeseen circumstances. The spare wheel also needs to be maintained in good condition, like any other wheel. Similarly, in a team, it is good to have a standby person available for different tasks. The standby person needs to know the task and its progress so slotting in is easy if the need arises.

 

  1. Across flying, command and professional education, you have pursued high standards and continued learning. What does excellence mean to you beyond achievement, and how can individuals build the discipline to keep improving when nobody is watching?

Two aspects stand out: excellence and discipline. Not discipline, actually self-discipline.

Excellence

Two drivers shape a person’s output level. One is the desire to succeed, and the other is the fear of failure. The desire to succeed is considered positive, and the fear of failure is considered negative. However, in my opinion, if you harness both, you move from average to excellent performance.

You should have a desire to leave a legacy wherever you go. People should remember you for something good. Many people think enough has already been done and there is no scope for further improvement, which I think is totally wrong. There is always scope to improve your standard of living, your processes, yourself, and your organisation. The principle you should follow is to make things better every day.

What I follow is very straightforward: “hard work”. There is no shortcut in life. Some people ask me whether you should work smart or hard. I tell them there’s no question of one or the other; it means you have to work smart and hard. Another principle I follow is “one step extra”. It means that when you feel you have done enough for a task, take one or two extra steps. That is what makes the difference between average output and above-average or excellent output.

Self-Discipline.

Self-discipline is doing the right things when nobody is watching. I came across a very good example or definition of self-discipline, i.e., “the ability to make yourself do the right thing at the right time, whether you like it or not”. It means you should be able to control yourself. You should be able to overcome various temptations that come your way. So self-restraint and willpower are essential for self-discipline.

Another significant facet of self-discipline is its relevance not only in work culture but across all facets of life. Whether concerning professional conduct, health, dietary habits, civic responsibility, social etiquette, manners, behaviour, road discipline, time management, or financial discipline, these aspects should all be maintained with self-discipline. 

 

  1. You have been involved in operational planning, capability development, force modernisation and strategic thinking. How should leaders balance proven methods with the need to adapt to new technology, changing threats and an uncertain future?

Military leaders must constantly deal with new technologies, changing threats, and an uncertain future.  They have to adapt to these changes constantly.

Technology

It’s often said that “technology is a good gadget, but a bad weapon,” highlighting its double-edged nature. In times of war, though, the lines blur, and there is no good or bad. Transforming technology into effective warfighting tools takes considerable time and effort. The Air Force, especially, is a technology-intensive service. Recently, technologies such as quantum, AI, robotics, hypersonic systems, and drones have rapidly transformed warfare.

To adapt to new technology, one needs to think and ideate constantly, i.e., how to use the new technology for military purposes and how to convert it into military capability. This process must occur concurrently, and development should proceed in parallel, ensuring capabilities are integrated into both civil and military domains at the same time. As far as possible, dual-use systems are better, as they can serve both purposes.

 Changing Threats

Change is the only constant; resisting it can be exhausting, and adapting to it is a strength. Today’s world is changing very fast, and so are the threats.

Therefore, it is essential to maintain a close watch on the adversary. Observing the adversary means evaluating both their capability development and their attitudes. However, our preparation should focus on the adversary’s capabilities rather than their current attitude. The adversary’s attitude may change at any time, whereas their capabilities may be used against us.

Uncertain Future

Decision-making in an uncertain environment is one of the most challenging tasks military leaders face. Therefore, military leaders must allow their imagination to explore all potential scenarios. This involves rigorous thinking, considering every possible outcome and preparing accordingly for each contingency. This approach ensures plans incorporate essential qualities such as adaptability, flexibility, and resilience, which are critically required in a rapidly changing world. During capability enhancement, mid-course reviews and course corrections matter because conditions change quickly. This is how you deal with a changing world.

 

  1. You have served as an instructor, mentor, speaker and writer after your active service. What do you believe experienced leaders owe the next generation, and what lessons do you most want students and young professionals to carry into their own lives and careers?

Responsibility Towards the New Generation

In the military domain, leadership positions change constantly as individuals retire at their designated retirement age. Experienced leaders, at the time of their exit, possess extensive knowledge and wisdom which they are expected to pass on to the succeeding generation. This process resembles a relay race, where one hands over the baton to the next runner rather than starting afresh.

It is therefore essential to leave a legacy that is memorable and reflects established capability, while also allowing room for future enhancements based on forthcoming changes. Furthermore, alongside developing capabilities and strategic planning, it is crucial to provide a clear and effective roadmap for the future. This roadmap provides a foundation for subsequent generations to adapt and build. Equally important is mentoring and training the successors, ensuring they are well prepared to assume future roles and responsibilities. Additionally, cultivating a motivated and competent team is vital, as this enables incoming leaders to develop further and refine the established framework. In my view, these are the key actions experienced leaders should take to support the transition and ease the next generation’s tasks.

Lessons for Young Professionals

Regarding lessons for young professionals and leaders, I have previously advocated several in my earlier response. Moreover, there are a few additional ones.

It is advisable always to adopt a balanced approach. This involves, firstly, maintaining equilibrium across professional, personal, and social settings. Secondly, it requires diligent effort while also acknowledging the importance of leisure; a guiding principle I have consistently upheld is “work hard and play harder”. Furthermore, in professional pursuits, both substance and presentation are critical; however, it is essential to balance them. This philosophy embodies what I consider a balanced approach to life.

Second, the foremost priority should be being a good human being. It is essential to recognise that possessing professional excellence does not necessarily equate to being a good human being. To cultivate goodness, one must show tolerance towards others and respect their ideas and beliefs. It is important to show empathy towards subordinates, remain honest in all interactions, and uphold fairness in dealings. I believe these qualities are fundamental to earning others’ respect. Therefore, they are essential.

And lastly, and most importantly, it is essential to lead by example. Your motto should be Do as I do’ rather than ‘ Do as I say ’.  This is because people tend to forget or doubt what you say, but they always observe and trust what you do. They pay close attention to your actions and look for consistency. Therefore, you must lead by example.

 

  1. After four decades in uniform, you have continued contributing through research, writing, strategic analysis, teaching and public engagement. What has the transition from active service to the next chapter taught you about purpose, identity and continuing to contribute?

Retirement Transition

The transition from forty years of military service to retirement has, I must admit, been somewhat challenging, mainly because it requires an adjustment period. One day, you are in a very high-ranking position, addressing numerous crises and constantly taking calls. The next day, however, your phone goes completely silent, and you’re totally out of the loop. It takes time to adjust to the new way of life.

In my case, the process has been instructive, offering numerous insights into purpose and ongoing contribution. One such realisation is that the skills and knowledge acquired through service are equally applicable to everyday life, which has proven highly beneficial. Furthermore, the extensive experiences gained over a span of forty years should not be squandered; rather, they ought to be shared with others so they too can benefit from these lessons.

Additionally, I have recognised that there remains much to learn. During active service, the focus is predominantly on one’s profession, often leaving less attention for other areas. However, later reflections reveal that one can acquire much more knowledge and develop many additional skills. Moreover, it became clear that life encompasses much more than the monetary wealth, rank, and power people often pursue during their careers. Understanding that health and relationships matter more than material gains underscores the importance of purpose and meaningful contribution.

Purpose in Life

Retirement does not imply that one merely ceases all activity; rather, it is essential to remain both physically and mentally engaged. This engagement is not necessarily to earn additional income, but it is essential for one’s physical and intellectual well-being.

In my case, a peculiar situation arose following my retirement. During the COVID period, I experienced considerable idle time. Consequently, I began documenting and discussing the knowledge I had accumulated over forty years. This endeavour gradually evolved into my life’s purpose: to read, learn more, and share my insights with others. I established a blog (https://55nda.com/blogs/anil-khosla/?), which now hosts about 850 posts, and I also manage a YouTube channel. Both platforms are self-operated. Additionally, I participate in seminars, discussions, and lectures at various colleges, universities, and think tanks. This involvement keeps me actively engaged.

Furthermore, I value continuous learning, meeting new people, and sharing knowledge through my blog and YouTube channels. These activities benefit one’s well-being and also contribute to society. It is mutually advantageous.

Having a clear purpose is a Japanese concept called “Ikigai”, which means “a reason for being” {It combines iki (to live) and gai (reason)}. Ikigai is a significant factor contributing to the longevity of Japanese people. Therefore, having a purpose in life post-retirement is exceedingly important.

 

  1. Looking across your entire journey—from flying and command to strategy, scholarship and mentoring—what is the one principle you would most like future generations to remember from your life and service, and why?

One principle I want everyone to remember is captured in the acronym “LIVE.”

L Stands for Learning. Learning is an ongoing process that continues throughout one’s life. In my view, the day you cease to learn, you also cease to live truly. Learning keeps us curious, adaptable, and open to new possibilities.

I Stands for Ideation. Learning must lead to thoughtful reflection, questioning, and brainstorming. In today’s world, we need thinkers, individuals who can generate new and innovative ideas. But an idea, unless acted upon, remains only an idea.

V Stands for Value Creation. The true value of learning and ideas lies in their implementation. We must translate our ideas into action, create meaningful outcomes, and continuously improve upon what we do. Implementation turns ideas into practice and creates value for ourselves and others.

E Stands for Exchange. Knowledge, experiences, and innovations gain greater meaning when they are shared. We have a responsibility to pass on what we have learned, including our successes and failures, to the next generation and to others who can benefit from our experiences.

Thus, LIVE represents a continuous cycle: Learning, Ideation, Value Creation, and Exchange. It is a simple but fundamental principle: keep learning, keep thinking, turn ideas into value, and share what you learn with others. That is what it means to LIVE truly.

 

If there is any experience, principle, lesson, story, observation or message that the questions above have not captured but you believe should be part of your Principles, please feel free to share it.

I want to share a personal experience with you. It is not merely a story, but an actual event that occurred in my life. During my school years, particularly in class nine for the higher secondary board (class 9 to 11), my father wanted me to take up biology and become a doctor. At that time, opportunities were quite limited. His reasoning was simple: my elder brother had become an engineer, so I should pursue medicine. Consequently, I enrolled in biology alongside physics and Chemistry, among other subjects. After a year of study, I realised my interest in biology was limited, while I strongly liked mathematics. I approached my mathematics teacher to ask whether I could include mathematics alongside the other three science subjects. He expressed concerns about my ability to cope, given that I had not studied mathematics for a year. I asked for a chance to try, promising to drop the subject if I could not manage it. He agreed and convinced the principal to allow me to take mathematics as a fourth subject in Class 10. In the board exams, mathematics was the only subject in which I obtained a distinction. Subsequently, mathematics became a mandatory requirement for joining the Air Force.

When I applied and cleared the selection process for the National Defence Academy, a second issue arose. My father questioned my desire to join the services. After I convinced him, he suggested I consider joining the Navy, arguing that his background in the Air Force and my brother’s service in the Army would ensure all three services were represented in the family if I joined the Navy. However, my heart was set on the Air Force, so I chose that path. Later, my mother raised concerns about the risks of flying and advised me against it. I explained that if I joined the Air Force, I wanted to become a pilot. Subsequently, I began flying in the Air Force, and my aviation career grew from there.

I share this story not to portray myself as a rebel against my parents. On the contrary, they understood and supported my feelings and aspirations. The key takeaway from this narrative is the importance of self-awareness, i.e. understanding your strengths, weaknesses, likes, and dislikes. Once you understand yourself clearly, you should follow your dreams. Everyone has aspirations; pursuing them is crucial. By doing so, the guiding principle of “doing what you love and loving what you do” naturally emerges. This approach lets you give your best effort to your pursuits and ultimately succeed. This is the core message I wish to convey through this story.

 

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References and credits

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to the respective owners and is provided only for wider dissemination.

 

 

850: WORLD SUDOKU DAY: CELEBRATING THE PUZZLE OF LOGIC AND NUMBERS

 

Every year, World Sudoku Day is celebrated on September 9 to recognise one of the world’s most popular number puzzles. The date, 9/9, reflects Sudoku’s familiar 9-by-9 grid, which contains nine rows, nine columns, and nine 3-by-3 boxes.

Sudoku is much more than a pastime. It is an engaging mental exercise that encourages logical thinking, concentration, patience, observation and problem-solving. People of all ages enjoy solving Sudoku for relaxation, entertainment, intellectual stimulation or simply as a way to take a break from screens and everyday distractions.

What makes Sudoku particularly interesting is its simplicity. You can understand the rules in minutes, but mastering difficult puzzles can take years of practice. It demonstrates an important lesson: a problem does not have to be solved all at once. With careful reasoning and a step-by-step approach, even a complicated challenge can become manageable.

 

The History of Sudoku

Although Sudoku became internationally famous in the early 21st century, its origins trace back much further. The puzzle is closely related to the mathematical concept of Latin squares, which Swiss mathematician Leonhard Euler studied extensively in the 18th century. In a Latin square, symbols are arranged so that each symbol appears only once in every row and column.

The modern form of Sudoku emerged much later. In the late 1970s, American architect and puzzle constructor Howard Garns created a puzzle similar to today’s Sudoku. It was published in Dell Pencil Puzzles and Word Games under the name “Number Place.”

The puzzle gained particular popularity in Japan after being introduced there in the 1980s. Japanese puzzle publisher Nikoli played an important role in developing and popularising the format. The name Sudoku comes from a shortened Japanese expression referring to the requirement that numbers occur only once.

From Japan, Sudoku gradually spread to other parts of the world. Its popularity increased dramatically in the 2000s when newspapers began publishing Sudoku grids alongside crosswords and other puzzles. Sudoku books, magazines, websites and competitions soon followed.

Today, Sudoku is available in newspapers, puzzle books, websites and mobile applications. It has also developed into a competitive activity, with national and international competitions attracting enthusiastic solvers.

 

How Sudoku Works

A standard Sudoku puzzle consists of a 9-by-9 grid divided into nine smaller 3-by-3 boxes. The objective is to fill the empty cells with the numbers 1 to 9.

There are three basic rules:

    • Every row must contain the numbers 1 to 9 without repetition.
    • Every column must contain the numbers 1 to 9 without repetition.
    • Every 3-by-3 box must also contain the numbers 1 to 9 without repetition.

Sudoku does not require advanced mathematics. In fact, it usually involves no addition, subtraction, multiplication, or division. Instead, the puzzle depends mainly on logic, deduction, pattern recognition and elimination.

This makes Sudoku an excellent example of structured problem-solving: solvers gather information, consider possibilities, eliminate incorrect options, and gradually construct a solution.

 

Benefits of Solving Sudoku

  1. Improves Logical Thinking

Sudoku requires players to examine possibilities and eliminate incorrect choices. This encourages logical and analytical thinking. Instead of making random guesses, successful solvers learn to base their decisions on evidence. This reasoning habit can help beyond puzzles, including in academic work, planning, and everyday decision-making.

  1. Enhances Concentration

A Sudoku grid contains many small details. Solving it requires sustained attention and careful observation. Regularly engaging with these puzzles can encourage people to concentrate on one task without constant distraction. In an age of notifications and rapidly changing digital content, activities that encourage focused attention can be particularly valuable.

  1. Develops Problem-Solving Skills

Every Sudoku puzzle presents a problem with incomplete information. The solver must determine what can be concluded from the numbers already provided. This encourages systematic thinking. Rather than becoming overwhelmed by a difficult puzzle, the solver can break it into smaller questions: Which numbers are missing? Where can they go? Which possibilities can be eliminated? The same approach applies to many life challenges: break a large problem into smaller parts and solve them one step at a time.

  1. Encourages Patience and Perseverance

Not every Sudoku puzzle can be solved quickly. Challenging grids may require considerable thought and several rounds of deduction. This teaches an important quality, i.e. perseverance. When one strategy does not work, the solver can pause, reconsider the possibilities and try another logical approach. Sudoku therefore provides a simple way to practise patience without making the experience feel like work.

  1. Keeps the Mind Engaged

Sudoku provides mental stimulation and encourages people to use their reasoning abilities. Like many other intellectually engaging hobbies, it offers an enjoyable way to keep the mind active. However, Sudoku should be seen as recreation and mental exercise rather than a guaranteed way to prevent memory loss or neurological disease. Its greatest value lies in making thinking enjoyable and encouraging regular engagement with mentally challenging activities.

  1. Can Be Relaxing

Although Sudoku can be challenging, many people find it relaxing. Focusing on a grid can temporarily shift attention away from everyday worries and distractions. For some, the experience is similar to other quiet hobbies such as reading, drawing or solving crossword puzzles. The satisfaction of gradually filling the grid can create a sense of progress and completion.

  1. Builds Confidence

Completing a difficult puzzle can provide a genuine sense of achievement. Beginners can start with easy grids and gradually move to intermediate and advanced levels. Each completed puzzle demonstrates that persistence and logical reasoning can lead to success. This can encourage people to approach other challenges with greater confidence.

 

Sudoku for All Ages

One of Sudoku’s greatest attractions is its accessibility. Children can begin with simple puzzles, while experienced adults can attempt extremely challenging grids.

Teachers can also use age-appropriate Sudoku puzzles as supplementary classroom activities to encourage logical reasoning and careful thinking. For children, simplified versions can make the activity both educational and entertaining.

Older adults may also enjoy Sudoku as a convenient recreational activity. It requires little equipment (just a pencil and a puzzle) and can be completed in a few minutes or over a longer period.

Sudoku can therefore bring different generations together. A child learning the basics and an experienced solver may approach the same puzzle differently, but both can enjoy the satisfaction of finding a solution.

 

Sudoku in the Digital Age

The rise of smartphones and computers has changed how people play Sudoku. Traditional newspapers and puzzle books remain popular, but digital platforms have made puzzles available almost instantly.

Online Sudoku applications can offer different difficulty levels, hints, timers and error checking. Some platforms also let players compete with others or take part in timed challenges.

Despite this technological evolution, Sudoku’s fundamental appeal has remained unchanged. Whether it is printed on paper or displayed on a smartphone, the challenge is the same: use logic to complete the grid.

 

Pick Up a Pencil and Start

World Sudoku Day celebrates a deceptively simple puzzle that has crossed cultural, geographical and generational boundaries. From its mathematical connection with Latin squares and its early publication as Number Place to its global popularity as Sudoku, the puzzle has become an important part of modern puzzle culture.

Its enduring appeal comes from a rare combination of simplicity and challenge. The rules are easy to learn, yet every new puzzle presents a fresh problem. There is no single formula that solves every grid; instead, each puzzle invites the solver to observe, reason, eliminate possibilities and persevere.

This World Sudoku Day, picking up a pencil and solving a puzzle can be a meaningful way to challenge the mind, practise concentration, develop logical thinking and enjoy some quiet time. So, take a few minutes, open a Sudoku grid and begin. You may discover that behind those nine numbers lies a surprisingly powerful exercise in patience, logic and persistence.

 

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849: ENGINEERING TRUST IN THE DIGITAL AEROSPACE ERA

 

Shared my views on the subject at the DSCI Summit

on 09 Sep 26

 

 

Aerospace is undergoing the deepest transformation since the shift from piston to jet propulsion, except that this one is digital rather than mechanical. Aerospace systems are becoming software-defined, networked, and AI-enabled.

Flight control laws, mission systems, maintenance procedures, and command networks are increasingly mediated by software, sensors, and, increasingly, machine learning models.  These models can make decisions or influence them at a speed no human operator can independently verify in real time.

In an era where aerospace systems are defined as much by lines of code as by laws of aerodynamics. A compromise of software, data or communications can have consequences comparable to physical damage. In this environment, the “Engineering Trust” is taking on a new connotation.

 

Transformation of the Definition of “Engineering Trust”.

Engineering trust means designing, testing, and building systems so predictably safe and transparent that humans and regulators can rely on them without hesitation. The digital aerospace era has transformed the scope of “engineering trust”. Beyond the stated definition, it now also includes “having complete confidence that digital tools, data networks, and artificial intelligence (AI) systems are safe, secure, and fully verified”.

Trust must therefore extend from the physical platform to code, data, identity, networks, AI and the supply chain. It is no longer merely a peripheral technical concern. Engineering trust has become a central focus. Engineering digital trust requires validating each link, including hardware, flight software, network communications, and operational execution. It must be demonstrated, verified, and maintained throughout the system lifecycle.

The challenges relate to both the software code and the Data.

    • Code-related matters emphasise the importance of trust, Verification, authentic updates, and isolating compromised software to enhance resilience.
    • Data-related matters include data poisoning, Model manipulation, Adversarial inputs, AI Hallucination, unreliable outputs, and supply-chain digital compromises.

 

Core Pillars of Digital Aerospace Trust

Safety, Reliability, and Airworthiness. Safety, reliability, and airworthiness require that digital systems (such as flight controls, mission systems, avionics, MRO platforms, and autonomous functions) act predictably in normal, failed, and off-nominal situations without compromising platform or mission safety.

Cybersecurity and Cyber Resilience. The term cybersecurity, with an expanding scope, has been transformed into “digital mission assurance”. Aircraft, satellites, ground systems, and supporting infrastructure must be protected against cyber threats. Protective systems must prevent, detect, contain, withstand, and recover from attacks. This protection is required across the product lifecycle and supply chain.

Software Assurance and Verification. The development, verification, and certification of flight-critical software must be thorough and should follow the certification procedures adopted by aviation regulatory bodies such as the FAA and EASA. Formal methods and mathematical verification can complement testing and provide greater assurance of correctness, especially for functions that require a high level of assurance. Assurance must also extend to software updates, digital twins, and the growing number of adaptive systems.

Data Integrity and Sovereignty. Ensuring data integrity and sovereignty means that navigation, telemetry, sensor, maintenance, and operational data must be accurate, genuine, and readily available. It must also be protected against manipulation or spoofing.  Solid data pipelines, anti-spoofing methods, and sensor integration (for example, combining GNSS, INS, and optical tracking) can increase resilience. Regarding data sovereignty, it is also necessary to control where the data is stored, who can access it, and which legal or regulatory system applies, especially for multinational and classified programs.

AI Trustworthiness and Bounded Autonomy. AI/ML is used in predictive maintenance, decision support, pilot assistance, and autonomous systems. In these cases, evidence of robustness, transparency, accountability, and suitable human oversight is required. Autonomous features must operate within clearly defined and verifiable safety limits; deterministic safety mechanisms or “wrappers” (protective software boundaries or guardrails that surround an adaptive AI algorithm to restrict its behaviour and ensure safety) should keep adaptive algorithms within their certified operational envelopes.

Human–Machine Trust. The trust humans place in automation requires that pilots, engineers, and operators have enough insight into the system’s status, limitations, uncertainty, and decision-making logic to know when to rely on the automation and when to intervene or take over.

Supply-Chain and Firmware Integrity. Trust must extend throughout the entire manufacturing process, from component sourcing to software development, integration, deployment, and maintenance.

Continuous Lifecycle Assurance.  Trust cannot be established once and then assumed; it must be maintained through configuration control, monitoring, vulnerability management, software updates, supplier changes, operational data, and evidence provided throughout the entire system lifecycle.

 

Policy Framework for Engineering Trust in the Digital Era

Appropriate measures are required to ensure that India’s digital ecosystem for the aerospace and defence sector is secure, sovereign, traceable, certifiable and internationally trusted. The framework should contribute to national security, speed up the adoption of digital engineering and AI, improve supply chain resilience, support certification and exports, and, at the same time, increase confidence in India’s expanding indigenous aerospace and defence industrial base.

Make Digital Engineering Safe and Trustworthy. Set up a reliable digital engineering framework for the aerospace and defence sectors to guarantee the safety, reliability, security, and integrity of digital models, software, hardware, and digital twins. Adopt internationally recognised aerospace standards where appropriate and create end-to-end digital traceability covering the entire process from requirements, through design, implementation, verification, to certification. At the same time, maximise the automation of verification and testing and incorporate cybersecurity throughout the entire engineering lifecycle.

Protect Manufacturing and MRO from Cyber Attacks. Build robust and cyber-secure manufacturing, maintenance, repair and overhaul (MRO), testing, and operating environments using zero-trust principles. Ensure strong identity management, multi-factor authentication, least-privilege access, network segmentation, continuous monitoring, and strict third-party controls are in place. Cybersecurity requirements must cover the entire supply chain, including measures to ensure production and maintenance can continue during a cyber incident.

Make AI Safe and Trustworthy. We should establish a governance and assurance framework so that AI may be safely introduced into the aviation and defence sectors. Clear boundaries must be set regarding the level of autonomy of AI, and there must be adequate human supervision for any decisions which are of safety or mission importance. AI systems must be thoroughly tested under normal, abnormal, and failure conditions, monitored throughout their operational life, and supported by appropriate measures for accountability, data provenance, transparency, security, and auditability.

Create Digital Traceability for Parts and Products. Set up a complete digital traceability system for important aerospace and defence parts and components. Give each item a unique digital identity and keep reliable records relating to its origin, certification, configuration, inspections, repairs, modifications, and full lifecycle history. Apply tamper-evident technologies and digital product passports, as appropriate, in order to enhance authenticity, prevent the use of counterfeit components, and meet regulatory and customer assurance requirements.

Control Sensitive Data and use the Sovereign Cloud. Establish a national framework which covers the classification, protection, storage, processing, and controlled sharing of sensitive, classified, proprietary and export-controlled information. Sensitive aerospace and defence data should remain under the proper control of the nation and the organisation. For important programmes, use sovereign or controlled cloud environments, while allowing secure international cooperation without jeopardising sensitive data or intellectual property.

Develop Certifiable Digital Engineering Capability. Build national and industrial capabilities in the areas of model-based engineering, model-based systems engineering, and digital twins. Ensure digital engineering practices conform to international aerospace standards and automate verification where possible. Create definitive digital evidence to support airworthiness certification, obtain regulatory approval, and gain international customer acceptance.

Set up a Zero-Trust Defence Industrial Base. Introduce a zero-trust approach to cybersecurity in all defence organisations and within their industry ecosystem. Protect critical networks and systems by implementing robust identity management, using multi-factor authentication, applying segmentation, applying the principle of least privilege, and maintaining continuous monitoring. Make cybersecurity assurance a fundamental requirement of defence procurement and supplier management, backed by a common framework for managing cyber risk across the defence industrial base.

Develop sovereign AI and Cloud Capabilities. Create sovereign AI and cloud infrastructure for sensitive aerospace and defence applications, ensuring the nation maintains control over critical data, models, infrastructure, and intellectual property. Develop secure AI capabilities for areas including UAVs, predictive maintenance, mission support, simulation, and other defence applications, while allowing controlled collaboration with international partners.

Establish Governance for AI in Safety-Critical Systems. A governance protocol is required for using AI in safety-critical systems.  It should contain clearly defined sector-specific rules.  It should also include requirements for human supervision, intervention, testing, monitoring, accountability, and assurance throughout the system lifecycle. The governance framework must align with established principles of trustworthy AI, including safety, security, transparency, privacy, fairness, robustness, and accountability.

 

Concluding Thoughts

A digital platform, network, or system that you do not trust should not be considered a capability but rather a liability. The principle in question—that trust is essential—has not changed with digitalisation; in fact, digitalisation has made it harder and more urgent to engineer trust.

Trust in the digital aerospace era should not be treated as a secondary issue or as a compliance item to be dealt with after the project has been completed; instead, it must be built into the system from the very first line of code, the very first component, and the very first hour of operator training. It must be maintained throughout the system’s entire lifecycle.

Engineering trust in the digital era is therefore not merely about aerospace system reliability. It is about ensuring that their safety and security are continuously demonstrable, auditable, and verifiable.

 

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to the respective owners and is provided only for wider dissemination.

 

 

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