Eva, Benjamin and Shear, Ted and Fitelson, Branden (2020) Four Approaches to Supposition. [Preprint]

Preview

Text FATS.pdf Download (259kB) | Preview

Abstract

The primary purpose of this paper is to shed light on the structure of four varieties of normative theories of supposition by systematically explicating the relationships between canonical representatives of each. These include qualitative and quantitative theories of indicative and subjunctive supposition. We approach this project by treating supposition as a form of 'provisional belief revision' in which a person temporarily accepts the supposition as true and makes some appropriate changes to her other opinions so as to accommodate their supposition. The idea is that suppositional judgments are supposed to reflect an agent's judgments about how things would be in some hypothetical state of affairs satisfying the supposition. Accordingly, our representative qualitative theories of indicative and subjunctive supposition are respectively based on AGM revision and KM update, while our representative quantitative ones are provided by conditionalization and imaging. We rely on a suitably adapted version of the Lockean thesis to generate qualitative judgments based on our representative quantitative theories. Ultimately, a number of new results are established that vindicate the often repeated claim that conditionalization is a probabilistic version of revision, while imaging is a probabilistic version of update.

---

Export/Citation:

EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL

Social Networking:

Share |

---

Item Type:	Preprint
Creators:	Creators Email ORCID Eva, Benjamin benedgareva@icloud.com Shear, Ted shear.ted@tedshear.org 0000-0003-0404-0942 Fitelson, Branden branden@fitelson.org
Keywords:	imaging, conditionalization, AGM revision, KM update, belief revision, supposition, indicative, subjunctive
Subjects:	Specific Sciences > Computer Science Specific Sciences > Artificial Intelligence General Issues > Decision Theory Specific Sciences > Probability/Statistics
Depositing User:	Dr Ted Shear
Date Deposited:	22 Aug 2020 03:19
Last Modified:	22 Aug 2020 03:19
Item ID:	18015
Subjects:	Specific Sciences > Computer Science Specific Sciences > Artificial Intelligence General Issues > Decision Theory Specific Sciences > Probability/Statistics
Date:	21 August 2020
URI:	https://philsci-archive.pitt.edu/id/eprint/18015

Available Versions of this Item

• Four Approaches to Supposition. (deposited 22 Aug 2020 03:19) [Currently Displayed]
  • Four Approaches to Supposition. (deposited 22 Nov 2020 04:04)

Monthly Views for the past 3 years

Monthly Downloads for the past 3 years

Plum Analytics

Actions (login required)

View Item