  I 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.
