What is Machine Learning?
Imagine teaching a child to recognize cats. You don't write rules — you show them thousands of pictures. Machine learning works the same way. We show computers millions of examples and they learn patterns.
Supervised vs Unsupervised Learning
In supervised learning, we provide labelled data. The model learns the mapping from input to output. Unsupervised learning finds hidden structure in unlabelled data — like clustering customers by behaviour.
Real World Applications
From Netflix recommendations to medical diagnosis, ML is everywhere. The key insight is that these systems improve with more data — they literally get smarter over time.