Belew, Micah
(2025)
Replication is an epistemic principle in material theory of induction.
[Preprint]
Abstract
In John Norton’s Material Theory of Induction, background facts provide the warrant for inductive inference and determine evidential relevance. Replication, however, is excluded as a principle of inductive logic. While Norton argues replication lacks the precision and methodological clarity to serve as a material principle of inference, I argue that replication nonetheless functions as an epistemic principle of induction. I examine how replication contributes to epistemic justification within both externalist and internalist frameworks and show that its role extends beyond procedural repetition. Replication acts as a reliable belief-forming process for identifying stable facts and inferences. This reframes MTI as a theory shaped not only by local facts but by how scientists determine which facts can function as background warrant.
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