The logic of projectibility

Philosophy of Science 39 (3):302-314 (1972)
Projectible conditions are (roughly) those whose universal generalizations are con firmed by their positive instances. This paper proposes certain modifications to the above definition in order to capture the pre-analytic notion it is supposed to explicate. Then we investigate what logical operations, when performed on projectible conditionals, yield new projectible conditionals. A number of surprising theorems are proven, and these theorems indicate that few conditionals having complex antecedents and consequents are projectible. It is also shown that projectibility is not closed under contraposition, and this is proposed as a solution to the Paradox of the Ravens. Finally, a general conjecture is made concerning just what conditionals are projectible, and it follows from this conjecture that although most conditionals are not projectible, they can still be dealt with inductively, but in ways more complex than recognized by classical confirmation theory
Keywords No keywords specified (fix it)
Categories (categorize this paper)
DOI 10.1086/288452
 Save to my reading list
Follow the author(s)
My bibliography
Export citation
Find it on Scholar
Edit this record
Mark as duplicate
Revision history Request removal from index
Download options
PhilPapers Archive

Upload a copy of this paper     Check publisher's policy on self-archival     Papers currently archived: 15,879
External links
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
Through your library
References found in this work BETA

No references found.

Add more references

Citations of this work BETA

Add more citations

Similar books and articles
John Moreland (1976). On Projecting Grue. Philosophy of Science 43 (3):363-377.
Will Barrett (2006). Luck and Decision. Journal of Applied Philosophy 23 (1):73–87.
Marc Lange (1994). Earman on the Projectibility of Grue. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994:87 - 95.
Rami Israel (2006). Projectibility and Explainability or How to Draw a New Picture of Inductive Practices. Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 37 (2):269 - 286.

Monthly downloads

Added to index


Total downloads

9 ( #245,981 of 1,725,176 )

Recent downloads (6 months)

3 ( #210,900 of 1,725,176 )

How can I increase my downloads?

My notes
Sign in to use this feature

Start a new thread
There  are no threads in this forum
Nothing in this forum yet.