The structure of scientific revolutions

Introductory essay / by Ian Hacking

Preface

Introduction: a role for history

The route to normal science

The nature of normal science

Normal science as puzzle-solving

The priority of paradigms

Anomaly and the emergence of scientific discoveries

Crisis and the emergence of scientific theories

The response to crisis

The nature and necessity of scientific revolutions

Revolutions as changes of world view

The invisibility of revolutions

The resolution of revolutions

Progress through revolutions

Postscript-1969.