The milk packets were still sitting outside apartment doors, cold and sweating in the damp morning air, when the world began to flicker.

In Chennai, the crows had barely launched their customary morning argument with the rising sun. Early walkers were stepping into the half-light, and somewhere a brass kettle was beginning to whistle on a kitchen stove. It was that gentle, forgiving hour when the day hadn’t yet decided what it wanted to become.

Yet, beneath a million light cotton blankets, small glass rectangles were already glowing like trapped fireflies. A message arrives.

A bitter fruit, it claims, will dissolve a tumour. A video clip shows a famous politician making an outrageous statement. A photograph captures a disturbing event. A distinguished scientist is quoted as revealing a secret that powerful people supposedly don’t want the public to know.

And beneath it all are those familiar instructions that define our age:

Forward immediately to everyone you care about.
So we do.
The person forwarding that message might be highly educated. He might have multiple university degrees framed on his office wall. She might be a doctor, an engineer, a professor, a judge, or a senior civil servant. They can read every word fluently.

What they often cannot do is determine whether any of those words are true. And there, hidden behind our glowing screens, lies what may be the most dangerous form of illiteracy in the twenty-first century.
As we approach World Literacy Day on September 8, it is worth reflecting on how dramatically the battlefield of the human mind has changed.

There was a time when illiteracy was easy to recognise. A man stood before a railway timetable unable to decipher its meaning. A woman placed her thumbprint on a legal document because she could not sign her name. A child stared at letters written on a slate, seeing only strange symbols instead of language.
We understood that problem, and because we understood it, we also understood the solution.

Build schools. Train teachers. Print books. Teach the alphabet.

India’s long march against traditional illiteracy remains one of the great success stories of the modern era. Around the time of Independence, only a small percentage of Indians could read or write. Over the decades, schools expanded into villages, universities multiplied, and educational opportunities reached millions.

It was a remarkable national achievement. But history had one more surprise waiting.

Just as we finally taught people how to read, technology transformed the very nature of information itself.

The literacy challenge of 1947 was simple:

Can you read this?
The literacy challenge of 2026 is far more dangerous:

Should you believe it?
For most of human history, seeing was almost synonymous with believing. A photograph carried the weight of evidence. A recorded voice was considered authentic. Creating a convincing fake required specialised equipment, technical expertise, and significant resources.

Artificial intelligence has dismantled those assumptions.

Today, algorithms can generate a human face entirely. A riot can be created in a city where nothing ever happened. A familiar voice can be cloned in seconds. A video can place words into the mouth of a public figure who never uttered them.

The problem isn’t that deception exists. Human beings have always lied.

The problem is that the economics of deception have changed completely.
The cost of manufacturing falsehood has collapsed. The technical barrier has almost disappeared. A lie can be created over a morning cup of coffee and reach millions before lunchtime.
Truth, meanwhile, still moves at the speed of investigation. Truth must verify. Truth must examine evidence.
Falsehood simply needs an internet connection. This is why our traditional definition of literacy no longer protects us. Reading, writing, and arithmetic remain essential, but they are no longer sufficient.

Modern citizenship demands a different set of intellectual skills. We need to understand that realistic images and videos may not represent reality. We need to distinguish journalism from opinion, evidence from anecdote, and scientific research from social-media folklore. We need enough financial awareness to recognise that many digital deceptions are designed to separate us from our money.

Above all, we need the habit of critical thinking: the discipline of asking one question before accepting any claim:

How do I know this is true?
These are no longer academic luxuries.

They are survival skills.
We would never hand an eight-year-old the keys to a car without explaining how the brakes work. Yet we routinely hand children smartphones connected to billions of people, sophisticated algorithms, misinformation networks, financial predators, and AI-generated content, expecting them to navigate this landscape by instinct alone.

During my years in policing, I learned that investigators develop a particular mental habit.

When a witness arrives with an extraordinary story, an experienced investigator doesn’t accept it immediately. He asks questions.

How does the witness know this? Where was he standing? Who else was present? What evidence supports the claim?

When a document appears on your desk, you ask where it came from. When a dramatic photograph appears online, you ask who created it. When a sensational story begins spreading across social media, you ask who benefits from it.

This isn’t cynicism. It is disciplined doubt. Disciplined doubt is the deliberate act of creating a pause between impulse and action. The digital world hates the pause. Manipulation thrives on urgency. Transfer the money now. Forward this before it is deleted. Your account will be suspended within ten minutes.
Falsehood always seems to be in a hurry because it understands something important: if people stop for even a few moments and think critically, the illusion begins to collapse.

My own professional journey has taken me through three seemingly unrelated worlds.

I began as a scientist, studying microorganisms while pursuing a doctorate in microbiology. I then spent decades in policing, investigating crimes and observing human behaviour under conditions of stress, deception, and conflict. Today, I work in artificial intelligence, helping develop technologies designed to identify manipulated digital content and combat deepfake fraud.

Those experiences have taught me one enduring lesson. Technology can assist us, but it cannot replace human judgment. Software can identify anomalies. Algorithms can detect suspicious patterns. But the final line of defence against deception does not sit inside a computer server.

It sits inside the human mind.
And that brings us to an uncomfortable truth. A university degree does not protect anyone from misinformation. An educated person can still circulate a fabricated medical cure. A highly accomplished professional can still fall victim to a sophisticated financial scam.

Knowledge alone does not guarantee wisdom. Science taught me something far more valuable than information. It taught me intellectual humility.

Science isn’t a collection of permanent answers. It is a disciplined way of asking questions. You test a hypothesis. You search for contradictory evidence. You remain open to being wrong. And when new evidence emerges, you begin again.

Perhaps the three most intelligent words in any language are these:

I don’t know.
Unfortunately, social media rewards certainty rather than curiosity.

Algorithms amplify outrage rather than nuance.

A sensational claim spreads rapidly because it provokes powerful emotions. A measured, evidence-based explanation often struggles to compete. Beneath it all lies another invisible force: the recommendation algorithm.

There was a time when we searched for information. Today, information searches for us. Algorithms observe what captures our attention and then deliver more of the same. Eventually, we begin to make a dangerous mistake.

We start believing that our social-media feed represents reality. It doesn’t. Our feed is merely a carefully constructed mirror reflecting our existing fears, interests, prejudices, and preferences.

Its purpose isn’t to make us wiser. Its purpose is to keep us engaged.

If I were designing a school curriculum for 2040, I would introduce a new subject called Truth Studies. Students would learn how to authenticate images, trace viral messages to their sources, compare genuine recordings with AI-generated audio, and recognise digital manipulation.

Most importantly, they would learn to ask difficult questions. The final examination wouldn’t ask, What did the textbook say? Instead, it would ask: Why did you choose to believe it?
Yet solving this problem doesn’t necessarily require complex technology. Human beings already possess one of the most effective defensive tools imaginable. It costs nothing. It requires no batteries. It takes only a few seconds to use.

The pause. Before forwarding a message, ask three simple questions: Who created this? What evidence supports it? What harm might I cause if it turns out to be false? That final question may be the most important.
Digital communication conceals consequences.

A finger moving across a smartphone screen seems insignificant. Yet one forwarded rumour can spread through families, communities, and entire nations. And an even greater danger now looms on the horizon.

The real threat of deepfakes isn’t simply that we might believe false information. It is that we might stop believing genuine information. A real recording emerges. Someone dismisses it as artificial intelligence.

An authentic photograph appears.Someone calls it synthetic. This phenomenon has a name: the liar’s dividend.

Once society accepts that anything can be fabricated, technology becomes the perfect excuse for avoiding accountability.

Democracy requires trust. Journalism requires trust. Medicine requires trust. Even friendship requires trust. Trust isn’t an abstract virtue. It is the invisible infrastructure upon which civilisation rests. Perhaps, then, we should expand our definition of literacy.

The great literacy movement of the twentieth century taught people how to decode words. The literacy movement of the twenty-first century must teach people how to decode intentions.

Who wants my attention? Who wants my money? Who benefits from my anger?

Cognitive agency—the ability to decide for ourselves what deserves entry into our minds—may become the most precious freedom of the digital age.

Evening eventually returns to Chennai.

The screens finally go dark.
The harsh glow gives way to the softer light of sunset reflecting from the tops of the neem trees.
Somewhere nearby, a child sits beneath a whirring fan with an open book, slowly learning that one arrangement of letters forms the word house, another forms river, and another forms truth.

Something timeless and beautiful about that scene. Literacy liberated humanity because it allowed truth to travel. But now falsehood travels too—faster, cheaper, and often disguised as someone we trust.

The answer isn’t to fear technology. The answer is to cultivate wisdom. Our next great educational mission must move beyond reading and writing. We must teach verification. We must teach respect for evidence. We must teach intellectual humility. And we must teach our children the four simple words that have guided every great thinker throughout history:

How do you know?
Because the most dangerous illiterate of the twenty-first century may not be someone who cannot read.
He may hold multiple degrees.
He may speak several languages.
He may carry in his pocket a device containing the accumulated knowledge of human civilisation.
He may read a thousand words before breakfast…and believe every single one of them.

Dr K. Jayanth Murali is a former Director General of Police (DGP) of Tamil Nadu and holds a PhD in Microbiology from the Indian Agricultural Research Institute, New Delhi. A marathon runner, technology enthusiast and author of ten books, he writes extensively on leadership, human performance, emerging technologies and the future of work. He is currently an advisor to leading institutions in industry, education, and technology.