Full Idea
Can't I name all the real numbers in the interval (0,1) at once? Couldn't I name them all 'Charley', for example?
Gist of Idea
Could I name all of the real numbers in one fell swoop? Call them all 'Charley'?
Source
Alvin Plantinga (De Re and De Dicto [1969], p.40)
Book Reference
Plantinga,Alvin: 'Essays in the Metaphysics of Modality' [OUP 2003], p.40
A Reaction
Plantinga is nervous about such a sweeping move, but can't think of an objection. This addresses a big problem, I think - that you are supposed to accept the real numbers when we cannot possibly name them all.