Lesson · 4 min Stretch
The Imitation Game
In one line Turing replaced “Can machines think?” with a test: can a machine’s conversation be told apart from a person’s?
In 1950 the mathematician Alan Turing published Computing Machinery and Intelligence. He thought the question “Can machines think?” too vague to answer, so he proposed a game. A judge holds typed conversations with a hidden person and a hidden machine. If the judge cannot reliably tell which is which, the machine has passed.
Turing answered many objections in advance. To Lady Lovelace’s claim that a machine only does what it is told, he replied that machines can surprise their makers. To the claim that machines lack feelings, he noted that we cannot check other people’s feelings directly either, yet we grant them minds.
Today’s chatbots can hold fluent conversations. Searle’s room, in The Room That Follows Rules, asks whether fluency is the same as understanding.
Go deeper
Turing predicted that by about the year 2000 an average judge would have no more than a 70 percent chance of telling machine from person after five minutes. Critics argue that the test measures skill at imitation, not intelligence, and that it rewards deception, such as feigned typing errors. Others defend it as fair: it asks of machines what we ask of each other.
The support chat
Dami chats with a company’s help service for twenty minutes before asking whether it is a person. It is not. The replies were quick, polite and helpful.
Dami’s first thought is that it must understand him. Turing would say it passed a version of his test. Searle would ask whether anything in it understood his problem, or only produced fitting replies. Both questions are worth asking before trusting it with something important.
Try this today Next time you use a chatbot, ask one question that needs real understanding, not just fluent words.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “The Imitation Game.” https://quest2reason.com/learn/lesson/the-imitation-game. Accessed 13 November 2026.
Sources
- Stanford Encyclopedia of Philosophy, “The Turing Test” — Covers the test, Turing’s replies to objections and later criticism.
- Wikipedia, “Computing Machinery and Intelligence” — Summarizes Turing’s 1950 paper and its predictions.
- Alan Turing, “Computing Machinery and Intelligence” (Mind, 1950) — The imitation game, the replies to objections, and the prediction for the year 2000.