ersatzer

noun

A proponent of ersatzism, the doctrine that possible worlds are merely abstract and do not have the same reality as the present world

My quarrel with the Ersatzer is perhaps not very deep, and I should not be too distressed if I were forced back to his position. But the quarrel is real. Mere representations of possibilities, which is what the Ersatzer uses, are not to be identified with the possibilities that we seek to represent.