Full Idea
I cannot think of any point in making the counterfactual supposition that Babe Ruth is a billiard ball; there is nothing I can say about him in that imagined state that I could not just as well say about billiard balls that are not him.
Gist of Idea
Why imagine that Babe Ruth might be a billiard ball; nothing useful could be said about the ball
Source
Robert C. Stalnaker (Anti-essentialism [1979], p.79)
Book Reference
Stalnaker,Robert C.: 'Ways a World Might Be' [OUP 2003], p.79
A Reaction
A bizarrely circumspect semanticists way of saying that Ruth couldn't possibly be a billiard ball! Would he say the same about a group of old men in wheelchairs, one of whom IS Babe Ruth?