Entrenchment and Retractability: A Preliminary Report
نویسندگان
چکیده
In the coherentist approach to belief change, all beliefs are assumed to be ordered according to their epistemic entrenchment. On the other hand, in the foundational approach to belief change, which explicitly distinguishes “basic” beliefs from “inferred” beliefs, basic beliefs are ordered according to their retractability. Both entrenchment and retractability are distinct tie-breaking mechanisms, although there is a suggestion in the literature that they might determine each other to some degree. Some writers, such as Neil Tennant, confuse these two mechanisms and, as a result, thoroughly confound the issue of belief change. In this paper we offer some results of our investigation into the interplay between entrenchment and retractability.
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