We review the properties of the frequency operator for an infinite number of
systems and disprove claims in the literature that the quantum probability
postulate can be derived from these properties.Comment: 21 pages, no figures, REVTEX. Only change in v.2 is change the title
of Sec. IIIC so that it doesn't have a \cite command in it. v.3 incorporates
changes that will be published as an erratum in Annals of Physic