Lesson 2: History of AI

From early ideas to today’s powerful machine learning systems

Big Picture

The idea of “thinking machines” is older than computers. But modern AI evolved through well-known milestones: early theory, symbolic AI, the first “AI winters,” and then the rise of machine learning and deep learning. This lesson gives you a clean mental timeline.

Timeline Highlights

1950 — Alan Turing

Turing proposes a test for machine intelligence (“Can machines think?”), inspiring AI as a field.

1956 — Dartmouth Workshop

Often called AI’s birth: researchers coin the term “Artificial Intelligence” and set early goals.

1960s–1970s — Symbolic AI

Rules and logic dominate: “expert systems” try to encode human knowledge directly as rules.

1970s & late 1980s — AI Winters

Funding and excitement drop when expectations exceed results. Important lesson: avoid over-promising.

1997 — Deep Blue beats Kasparov

IBM’s chess system shows narrow AI can rival world champions in specific tasks.

2000s — Machine Learning

Focus shifts to learning from data (SVMs, ensembles). The web creates huge datasets.

2012 — Deep Learning Breakthrough

ImageNet results (AlexNet) spark the deep learning wave; GPUs make training feasible.

2016+ — Superhuman Narrow AI

AlphaGo defeats Lee Sedol; speech, vision, and NLP reach human-level performance in many tasks.

Today — Practical AI Everywhere

Translation, image generation, chat assistants, and recommendation systems are widely used in daily life.

Key Ideas to Remember

Symbolic vs. Learning

Symbolic AI uses rules; machine learning learns patterns from data. Modern AI blends both ideas.

AI Winters

When hype exceeds results, funding falls. Progress continues, but slower — cycles repeat.

Compute & Data

GPUs and large datasets enabled deep learning breakthroughs from 2012 onward.

Quick Quiz

1. The Dartmouth Workshop (1956) is known for…

2. “AI Winter” refers to…

3. What enabled the deep learning wave around 2012?

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