 Neither alternative can be defended, according to anti-realists. Concerning the first alternative, massive indeterminacy for perfectly determinate terms is absurd. As for the second, for realists to contend that even an ideal theory could be false is to resort to unmotivated dogmatism, since on their own admission we cannot tell which mapping the world has set up for us. Such dogmatism leaves the realist with no answer to a skepticism which undermines any capacity to reliably represent the world, anti-realists maintain.