Salt II looms as the subject of our next great national debate. The SALT sellers and the Salt shakers have already outlined their campaign plans. And it is plain even now that a major element of the debate will be the verification process. As the intensity of the debate grows, so too does the likelihood of confusion for a public assailed by cries of alarm on one side and smooth assurances on the other, both proffering platoons of experts, dazzling data, and prognostications of doom if their views are not accepted.