| List of Figures | |
| List of Tables | |
| Preface | |
| Acknowledgments | |
| Pt. 1 | Explanations | 1 |
| Ch. 1 | Explaining Science | 3 |
| Ch. 2 | Explaining Disease | 20 |
| Pt. 2 | The Bacterial Theory of Peptic Ulcers | 37 |
| Ch. 3 | Ulcers and Bacteria: Discovery | 39 |
| Ch. 4 | Ulcers and Bacteria: Acceptance | 56 |
| Ch. 5 | Ulcers and Bacteria: Instruments and Experiments | 71 |
| Ch. 6 | Ulcers and Bacteria: Social Interactions | 84 |
| Pt. 3 | Cognitive Processes | 99 |
| Ch. 7 | Causes, Correlations, and Mechanisms | 101 |
| Ch. 8 | Discovering Causes: Scurvy, Mad Cow Disease, AIDS, and Chronic Fatigue Syndrome | 118 |
| Ch. 9 | Medical Analogies | 135 |
| Ch. 10 | Diseases, Germs, and Conceptual Change | 148 |
| Pt. 4 | Social Processes | 165 |
| Ch. 11 | Collaborative Knowledge | 167 |
| Ch. 12 | Medical Consensus | 185 |
| Ch. 13 | Science and Medicine on the Internet | 199 |
| Pt. 5 | Conclusion | 217 |
| Ch. 14 | Science as a Complex System | 219 |
| References | 243 |
| Index | 259 |
