You've heard "AI" everywhere — but what is it? Artificial Intelligence is when a computer does things that usually need human-like thinking: recognising faces, understanding language, recommending videos, or answering questions. Here's the key difference from ordinary code: in normal programming a human writes every rule. In modern AI (called machine learning), the computer learns patterns from lots of examples (data) instead of being given every rule. Show it thousands of cat photos and it learns what "cat" looks like. AI is a powerful tool made by people — it is not alive, not conscious, and doesn't truly "understand" the way you do. It's very clever pattern-matching.