Dedication

To my parents, who started me on my journey to the edges of knowledge

CONTENTS

Cover

Title Page

Copyright

Dedication

Edge Zero: The Known Unknowns

First Edge: The Casino Dice

Chapter 1

Chapter 2

Second Edge: The Cello

Chapter 3

Chapter 4

Third Edge: The Pot of Uranium

Chapter 5

Chapter 6

Fourth Edge: The Cut-Out Universe

Chapter 7

Chapter 8

Fifth Edge: The Wristwatch

Chapter 9

Chapter 10

Sixth Edge: The Chatbot App

Chapter 11

Chapter 12

Seventh Edge: The Christmas Cracker

Chapter 13

Chapter 14

Further Reading

Index

Acknowledgements

Illustration Credits

Also by Marcus du Sautoy

About the Publisher