Full Idea
We can refer to things which change over time, which suggests that in thinking of and in referring to an individual we are not constrained to represent it as that which has certain properties.
Gist of Idea
If we can refer to things which change, we can't be obliged to single out their properties
Source
Kent Bach (What Does It Take to Refer? [2006], 22.1)
Book Reference
'Oxford Handbook of Philosophy of Language', ed/tr. Lepore,E/Smith,B [OUP 2008], p.519
A Reaction
This seems a good argument against the descriptive theory of reference which is not (I think) in Kripke. Problems like vagueness and the Ship of Theseus rear their heads.