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- Title
Hamilton’s Two Conceptions of Social Fitness.
- Authors
Birch, Jonathan
- Abstract
Hamilton introduced two conceptions of social fitness, which he called neighbor-modulated fitness and inclusive fitness. Although he regarded them as formally equivalent, a reanalysis of his own argument for their equivalence brings out two important assumptions on which it rests: weak additivity and actor’s control. When weak additivity breaks down, neither fitness concept is appropriate in its original form. When actor’s control breaks down, neighbor-modulated fitness may be appropriate, but inclusive fitness is not. Yet I argue that, despite its more limited domain of application, inclusive fitness provides a distinctively valuable perspective on social evolution.
- Subjects
INCLUSIVE fitness (Evolution); BIOLOGICAL fitness; HAMILTON, W. D. (William Donald), 1936-2000; ALTRUISM; BIOLOGICAL adaptation
- Publication
Philosophy of Science, 2016, Vol 83, Issue 5, p848
- ISSN
0031-8248
- Publication type
Article
- DOI
10.1086/687869