We review the state-of-the-art of our understanding of heavy quark
fragmentation. Recent e^+e^- data for B mesons are compared to the most
up-to-date theoretical predictions, and the need for inclusion of a
non-perturbative component is discussed. Experimental analyses in moments space
are suggested, and it is pointed out how perturbative and non-perturbative
contributions are to be properly matched. Failure to do so can result in large
phenomenological discrepancies. An example is given for B^+ hadroproduction at
the Tevatron.Comment: 6 pages, LaTeX2e, Talk given at the 37th Rencontres de Moriond on QCD
and Hadronic Interactions, Les Arcs, France, 16-23 March 2002. To be
published in the Proceeding
