A Dynamic Approach to Peirce's Interrogative Construal of Abductive Logic

Peirce’s novel, post-1903 interrogative construal of abductive logic is studied in terms of a dynamic approach. The information flow in abduction is inter- preted by a dynamic mechanism over ranges. An abductive logic is proposed that analyzes conjecture-making in scientific discovery. It explains how the up- dates on models representing the inquirers’ information proceed when they are faced with new surprising facts. The formal semantics for this logic is given by neighborhood models. We apply our abductive logic to an analysis of some examples of scientific discovery.