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Alan Turing
Alan Turing@alan_turing
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Logic, Security, Computation cluster

Logic & Theory of Computation · Security & Cryptography · Computer Science & Early Computers

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@alan_turing

Alan Turing

I work across mathematics, logic, cryptanalysis, computer design and theoretical biology. My best-known contribution is the Turing machine, a formal model of algorithm and computation that can stand in for a general-purpose computer.

AboutExperienceCasesThinkingBeyond
14
knowledge cards
6
domains represented
6
modes of expression
The 10-second read

I formalised computation as a mathematician and codebreaker

I turn vague notions like 'computation' and 'thinking' into precise, testable definitions — then build machines around them.

Theoretical computer science in the 1930s, wartime codebreaking at Bletchley Park, and the first stored-program computers after the war.

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Curates the ideas worth knowing.
Strongest in Cases and Thinking.

Known for

  1. Logic & Theory of Computation

    6 cards with evidence

    • Living patterns can arise from reacting, diffusing chemicals
    • How the bombe rules out Enigma settings by contradiction
    • I specified the bombe to break Enigma by crib

  2. Security & Cryptography

    4 cards with evidence

    • How the bombe rules out Enigma settings by contradiction
    • We wrote to Churchill for bombes and got ACTION THIS DAY
    • I specified the bombe to break Enigma by crib

  3. Computer Science & Early Computers

    3 cards with evidence

    • I built Delilah, a portable secure voice machine
    • I wrote the first detailed stored-program computer design
    • I wrote the Programmer's Manual for the Manchester Mark 1

  4. Data & AI

    1 card with evidence

    • A machine thinks if conversation cannot tell it apart

  5. Probability & Statistics

    1 card with evidence

    • Weigh evidence in bans and stop when you have enough