What is artificial intelligence (AI)? Explained simply
How AI learns, machine learning and chatbots, the history of AI, AI in daily life, India's AI mission, and the risks of AI and how to use it carefully.
Rohit Tandon · 25 October 2026 · 4 min read
Asking your phone a question by voice, finding the fastest route on a map, automatic translation into another language, or a chatbot that writes an essay — behind all of these is artificial intelligence (AI). Here, in simple words, is what artificial intelligence is, how it works, and what its benefits and dangers are.
What is AI?
AI is the branch of computer science that teaches machines to do tasks that usually need human understanding — such as seeing, hearing, understanding language, learning and making decisions. Older computer programs ran on rules written for every step. Most of today's AI systems learn "patterns" by themselves from huge numbers of examples. Remember, AI does not think or feel like a human; it makes predictions based on data.
How does AI learn?
- Machine learning: the computer is shown thousands or millions of examples — such as pictures of cats and dogs — and learns to tell them apart by itself.
- Neural networks and deep learning: mathematical structures inspired by the brain's neurons, whose many layers together learn complex things.
- Generative AI and chatbots: "large language models" trained on vast amounts of written text, which can produce answers, essays, code or pictures.
A short history of AI
| Year | Milestone |
|---|---|
| 1950 | Alan Turing asked, "Can machines think?" and proposed the "Turing test" |
| 1956 | The term "artificial intelligence" formally appeared at the Dartmouth conference in the USA (John McCarthy) |
| 1997 | IBM's "Deep Blue" beat world chess champion Garry Kasparov |
| 2016 | "AlphaGo" beat Go legend Lee Sedol |
| 2022 | Large chatbots reached the public and generative AI spread fast |
| 2024 | Nobel Prizes for neural networks (physics) and for AI that predicts protein structures (chemistry) |
The "fifth generation" of computers is linked with AI — read The history of the computer. India's story in chess: The history of chess.
Did you know? AI has also brought big leaps in science. An AI called "AlphaFold" predicted the 3D structures of hundreds of thousands of proteins — work that once took years of experiments for each protein. For this, Demis Hassabis and John Jumper shared the 2024 Nobel Prize in Chemistry (with David Baker).
AI in everyday life
- Suggesting routes on maps according to traffic.
- Sorting spam in email and catching fraudulent bank transactions.
- Translation between Indian languages — the Government of India's "Bhashini" platform works on this.
- Helping doctors read X-rays and scans, forecasting weather and advising farmers.
- Suggestions for videos, songs and shopping.
India and AI
In March 2024 the Government of India approved the "IndiaAI Mission", worth more than ₹10,000 crore, which aims to build computing capacity for AI in the country, Indian datasets and AI models for Indian languages. Large numbers of AI engineers and start-ups are working in India. Indian personalities from the tech world: IT and technology.
The risks of AI, and how to be careful
- Wrong answers: chatbots sometimes invent wrong things with complete confidence. Always check important information — especially on health, law or money — with an official source.
- Deepfakes: fake videos and voices can be made with AI; do not trust a shocking video straight away.
- Privacy: do not put your Aadhaar number, passwords or private details into AI tools.
- Studies: use AI to help you understand, not in place of thinking for yourself.
Key points
- AI is the technology that enables machines to see, understand, learn and make decisions.
- The term "artificial intelligence" is linked with John McCarthy in 1956.
- In machine learning, a computer learns by itself from examples.
- India launched the IndiaAI Mission in 2024.
- AI's answers should always be checked against reliable sources.
Frequently asked questions
Who is called the father of artificial intelligence?
John McCarthy, who coined the term; Alan Turing is also regarded as a pioneer of the field.
Does AI think like a human?
No, AI makes predictions based on patterns learned from data; it does not have human-like understanding or feelings.
More articles: Science · Science questions.
Sources
Found this useful? Share it.