Necessary Assumptions

Informal Logic 19 (1):41-61 (1999)
Download Edit this record How to cite View on PhilPapers
Abstract
In their book EVALUATING CRITICAL THINKING Stephen Norris and Robert Ennis say: “Although it is tempting to think that certain [unstated] assumptions are logically necessary for an argument or position, they are not. So do not ask for them.” Numerous writers of introductory logic texts as well as various highly visible standardized tests (e.g., the LSAT and GRE) presume that the Norris/Ennis view is wrong; the presumption is that many arguments have (unstated) necessary assumptions and that readers and test takers can reasonably be expected to identify such assumptions. This paper proposes and defends criteria for determining necessary assumptions of arguments. Both theoretical and empirical considerations are brought to bear.
PhilPapers/Archive ID
PLUNA-2
Revision history
Archival date: 2015-11-21
View upload history
References found in this work BETA
Enthymematic Arguments.Hitchcock, David
A General Logic.Slaney, John

Add more references

Citations of this work BETA
Can Cogency Vanish?Plumer, Gilbert
Implicit Premises.Hoaglund, John

Add more citations

Added to PP index
2012-10-19

Total views
294 ( #10,592 of 40,765 )

Recent downloads (6 months)
34 ( #17,361 of 40,765 )

How can I increase my downloads?

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