Full Idea
It is a tenet of Russell's theory that all expressions, and especially definite descriptions, whose denotation is dependent upon contingent circumstances must be eliminated.
Gist of Idea
For Russell, expressions dependent on contingent circumstances must be eliminated
Source
David Kaplan (How to Russell a Frege-Church [1975], II)
Book Reference
'The Possible and the Actual', ed/tr. Loux,Michael J. [Cornell 1979], p.214