Breaking the ties: epistemic significance, bacilli, and underdetermination

Area of Science:

• Philosophy of Science
• Scientific Methodology
• Epistemology

Background:

• The underdetermination argument posits that empirical evidence alone cannot uniquely determine theory choice.
• A key premise is that evidence entailment is the sole epistemic constraint on selecting scientific theories.
• This challenges the rational basis for preferring one theory over another when multiple theories fit the data.

Observation:

• Historical case study: Robert Koch's 1882 discovery of the tuberculosis bacterium.
• Analysis of methodological rules applied during Koch's research.
• Examination of how these rules influenced theory selection despite potential empirical equivalence.

Findings:

• Methodological rules possess epistemic significance for both observable and unobservable aspects of theories.
• These rules can provide grounds for theory choice, even when theories are underdetermined by evidence.
• Anti-realist interpretations of underdetermination must account for the tie-breaking role of methodological principles.

Implications:

• Challenges the sufficiency of empirical equivalence for establishing underdetermination.
• Suggests that a nuanced understanding of underdetermination requires considering non-empirical epistemic constraints.
• Highlights the importance of methodological rules in the historical development and rational appraisal of scientific theories.