A linguistic theory is correct exactly to the extent that it is the explici
t statement of a body of knowledge possessed by a designated language-user.
This popular psychological conception of the goal of linguistic theorizing
is commonly paired with a preference for idiolectal over social languages,
where it seems to be in the nature of idiolects that the beliefs one holds
about one's own are ipso facto correct. Unfortunately, it is also plausibl
e that the correctness of a genuine belief cannot consist merely in that be
liefs being held. This paper considers how best to eliminate this tension.