Table of Contents

Preface.

Acknowledgements.

1. An Analysis of Counterfactuals.

Introduction.

Strict Conditionals.

Variably Strict Conditionals.

The Limit Assumption.

'Might' Counterfactuals and Outer Modalities.

Impossible Antecedents.

True Antecedents.

Counterfactual Fallacies.

Potentialities.

2. Reformulations.

Multiple Modalities.

Propositional Quantifiers.

Comparative Similarity.

Similarity Measures.

Comparative Possibility.

Cotenability.

Selection Functions.

The Selection Operator.

3. Comparisons.

The Metalinguistic Theory: Implicit Premisis.

The Metalinguistic Theory: Factual Premises.

The Metalinguistic Theory: Laws of Nature.

Stalnaker's Theory.

4. Foundations.

Possible Worlds.

Similarity.

5. Analogies.

Conditional Obligation.

'When Next' and 'When Last'.

Contextually Definite Descriptions.

6. Logics.

Completeness Results.

Decidability Results.

Derived Modal Logics.

Appendix: Related Writings by David Lewis.

Index.

About the Author

David Lewis (1941- 2001) was Professor of Philosophy at Princeton University. His publications include Convention (reissued by Blackwell 2002), On the Plurality of Worlds (reissued by Blackwell, 2000), Parts of Classes (1991), and of numerous articles in metaphysics and other areas. Many of his writings are available in his Collected Papers.

Reviews

"'Contrary-to-fact conditionals have provided logical analysts with fascinating puzzles. (This book) has a unitary theme presented clearly and attractively for the most part with only the unavoidable minimum of formal apparatus. The theme is pursued confidently and relentlessly without evasions or qualifications." Times Literary Supplement "This is an excellent book. It combines shrewd philosophical sense with a fine technical expertise. The statement of views is concise and forthright." Kit Fine, Mind "This essay is a virtuoso performance." British Journal for the Philosophy of Science "Beautifully and lucidly written and full of clever ideas. It contains very many philosophical insights and comparisons." J. J. C. Smart, Australasian Journal of Philosophy