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Lesson 18 min

What is AI?

What AI, ML, and Deep Learning actually mean — and how they fit together.

What you will learn
  • The difference between AI, ML, and Deep Learning
  • Why ML learns rules from data instead of being hand-coded
  • How modern AI differs from traditional rule-based software

Explanation

Artificial Intelligence (AI) is the field of building software that performs tasks we normally associate with human intelligence — understanding language, recognising images, making decisions, and generating content.

Three nested ideas are often confused. AI is the broad goal. Machine Learning (ML) is the main technique: instead of hand-coding rules, we show a program many examples and let it discover the patterns. Deep Learning (DL) is a powerful kind of ML built on large neural networks with many layers.

The key shift: traditional software follows rules a human wrote, while ML writes its own rules by learning from data. That is why modern AI can handle messy real-world inputs like speech and photos that are almost impossible to capture with fixed if/else rules.

Real-world use

When Netflix recommends a show, an ML model has learned patterns from millions of viewing histories — no engineer wrote a rule that says 'if the user watched X, suggest Y'.

Common mistakes
  • Assuming a chatbot 'understands' meaning the way a person does — it predicts likely text.
  • Using 'AI' and 'ML' as if they were the same thing.
Practice

In your own words, write a one-sentence definition of AI, ML, and DL, and give one everyday example of each.

Knowledge check
0/2 answered

1. Which statement best describes Machine Learning?

2. Deep Learning is best described as...

Answer all questions to check.