Index

Table of Contents

11  Introduction

15  while(true)
    On the Fluidity of Signs in Hegel, Godel, and Turing

29  Traces of the Mouth
    Andrei Andreyevich Markov’s Mathematisation of Writing

55  There Must Be an Angel
    On the Beginnings of the Arithmetics of Rays

79  Enigma Rebus
    Prolegomena to an Archaeology of Algorithmic Artefacts

113 Resurrecting the Bomba Kryptologiczna:
    A Reconstruction of the Polish Crypto Device

135 Scrambling T-R-U-T-H
    Rotating Letters as a Form of Thought

175 Programming ENTER
    Christopher Strachey’s Draughts Programme

189 Programming Degree Zero
    A Genealogy of Turing’s Machines and Algorithms