From the Book - Fourth edition
Introductory essay / by Ian Hacking
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 nature and necessity of scientific revolutions
Revolutions as changes of world view
The invisibility of revolutions
The resolution of revolutions
Progress through revolutions