Computing Machinery and Intelligence
The paper that started it all. Alan Turing asked a deceptively simple question — can machines think? — and in trying to answer it, invented the entire framework through which we still think about artificial intelligence today.
Computing Machinery and Intelligence
Alan Turing · 1950 · Published in Mind (Philosophy Journal)
“I propose to consider the question, ‘Can machines think?’” — Alan Turing, opening line of the paper
That one sentence, written in 1950, launched a field.
Alan Turing was a mathematician, not a philosopher. He had just helped Britain break the Nazi Enigma code during World War II, saving millions of lives. He had also designed one of the first programmable computers. And now, in a quiet academic paper, he was asking a question that made most scientists laugh: can a machine think?
He knew the question was too slippery to answer directly. So he did what good scientists do — he replaced a vague question with a precise one. Instead of “Can machines think?”, he asked: “Can a machine fool a human into thinking it is human?”
This became known as the Turing Test — and it remains the most famous benchmark in all of artificial intelligence, 75 years later.
What is in this paper?
This paper has nine sections for you to read, in order. Each one builds on the last.
| Section | What you will learn |
|---|---|
| Historical Context | What the world looked like in 1950, before AI existed |
| The Problem | What question Turing was really trying to answer |
| The Core Idea | The Imitation Game and why it was a stroke of genius |
| How It Works | The Turing Test step by step |
| The Mathematics | The logic and computation behind the idea |
| The Code | Build a simple version yourself in Python |
| Why It Mattered | What changed because of this paper |
| Limitations | What Turing got wrong, and what critics say |
| What Came Next | The trail this paper left for others to follow |
Paper at a glance
- Difficulty: Beginner — no mathematics required
- Reading time: 45 minutes for all 9 sections
- Why read this: Every AI paper ever written is, in some sense, an answer to this one
- Key terms: Turing Test · Intelligence · Computation
Start reading
Begin with Historical Context →
Or, if you already know the background, jump to The Core Idea →
Next paper in the timeline: The Perceptron (1958) →
Discussion
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