2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46296I discuss some recent results on the systematic behavior of final state rescattering which makes use of the limit of a heavy B meson. The results suggest that soft final state interactions do not disappear in the large $m_B$ limit. Soft and hard final state phases can both contribute to CP violating asymmetries in B decay. The way that the soft phases occur is interesting theoretically and suggests the violation of local quark-hadron duality.6 pages, Latex, talk presented at the 3rd German-Russian Workshop on Heavy Quark Physics, Dubna, May 1996High Energy Physics - Phenomenologytext