2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43538The status of the heavy quark expansion for inclusive B decays is briefly reviewed from the perspective of confronting theory with data and of extracting the heavy quark parameters. A good agreement between properly applied theory and new precision data is observed. Some recent applications to the exclusive heavy flavor transitions are addressed. I recall the `1/2 > 3/2' paradox for the transitions into the charm P-wave states.7 pages, LaTeX, four figures; uses moriondmod.sty; XXXIXth Rencontres de Moriond: QCD and Hadronic Interactions, March 28 - April 4, 2004, La Thuile, ItalyHigh Energy Physics - Phenomenologytext