Time-Slice Rationality

Mind 124 (494):449-491 (2015)
Download Edit this record How to cite View on PhilPapers
Abstract
I advocate Time-Slice Rationality, the thesis that the relationship between two time-slices of the same person is not importantly different, for purposes of rational evaluation, from the relationship between time-slices of distinct persons. The locus of rationality, so to speak, is the time-slice rather than the temporally extended agent. This claim is motivated by consideration of puzzle cases for personal identity over time and by a very moderate form of internalism about rationality. Time-Slice Rationality conflicts with two proposed principles of rationality, Conditionalization and Reflection. Conditionalization is a diachronic norm saying how your current degrees of belief should fit with your old ones, while Reflection is a norm enjoining you to defer to the degrees of belief that you expect to have in the future. But they are independently problematic and should be replaced by improved, time-slice-centric principles. Conditionalization should be replaced by a synchronic norm saying what degrees of belief you ought to have given your current evidence and Reflection should be replaced by a norm which instructs you to defer to the degrees of belief of agents you take to be experts. These replacement principles do all the work that the old principles were supposed to do while avoiding their problems. In this way, Time-Slice Rationality puts the theory of rationality on firmer foundations and yields better norms than alternative, non-time-slice-centric approaches
Categories
PhilPapers/Archive ID
HEDTR
Revision history
Archival date: 2013-10-27
View upload history
References found in this work BETA
Unreasonable Knowledge.Lasonen-Aarnio, Maria

View all 23 references / Add more references

Citations of this work BETA
Accuracy, Coherence, and Evidence.Fitelson, Branden & Easwaran, Kenny
The Uniqueness Thesis.Kopec, Matthew & Titelbaum, Michael
Internalism Explained.Wedgwood, Ralph
Dynamic Permissivism.Podgorski, Abelard

View all 23 citations / Add more citations

Added to PP index
2013-10-27

Total views
836 ( #2,273 of 39,588 )

Recent downloads (6 months)
120 ( #3,173 of 39,588 )

How can I increase my downloads?

Downloads since first upload
This graph includes both downloads from PhilArchive and clicks to external links.