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Acta Biotheoretica

, Volume 57, Issue 1–2, pp 129–162 | Cite as

Character Analysis in Cladistics: Abstraction, Reification, and the Search for Objectivity

  • Rasmus Grønfeldt WintherEmail author
Regular Article

Abstract

The dangers of character reification for cladistic inference are explored. The identification and analysis of characters always involves theory-laden abstraction—there is no theory-free “view from nowhere.” Given theory-ladenness, and given a real world with actual objects and processes, how can we separate robustly real biological characters from uncritically reified characters? One way to avoid reification is through the employment of objectivity criteria that give us good methods for identifying robust primary homology statements. I identify six such criteria and explore each with examples. Ultimately, it is important to minimize character reification, because poor character analysis leads to dismal cladograms, even when proper phylogenetic analysis is employed. Given the deep and systemic problems associated with character reification, it is ironic that philosophers have focused almost entirely on phylogenetic analysis and neglected character analysis.

Keywords

Characters Cladistics Phylogenetics Morphology Abstraction Reification Biological theory Epistemology Causation 

Notes

Acknowledgments

This paper emerged from multiple conversations with Olivier Rieppel. I am also grateful to Niels Bonde, Kirk Fitzhugh, David Hull, Fabrizzio McManus Guerrero, Brent Mishler, Elliot Sober, Peter Stevens, Francisco Vergara-Silva, and David M Williams for discussion and comments on an earlier draft. Springer Science and Business Media (Fig. 1), John Wiley & Sons, Inc. (Figs. 2 and 3), and University of Chicago Press (Fig. 4) kindly granted permission to reproduce original material.

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© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Philosophy DepartmentUniversity of CaliforniaSanta CruzUSA

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