Full Idea
Realism is an empirical theory; it explains the convergence of scientific theories, where earlier theories are often limiting cases of later theories (which is why theoretical terms preserve their reference); and it explains the success of language.
Gist of Idea
Realism is a theory, which explains the convergence of science and the success of language
Source
Hilary Putnam (Meaning and the Moral Sciences [1978], Pt Four)
Book Reference
Putnam,Hilary: 'Meaning and the Moral Sciences' [RKP 1981], p.122
A Reaction
I agree. Personally, I think of Plato's Theory of Forms and all religions as empirical theories. The response from anti-realists is generally to undermine confidence in the evidence which these 'empirical theories' are said to explain.
Related Idea
Idea 6782 Realism is the only philosophy of science that doesn't make the success of science a miracle [Putnam]