  Confinement indicates an asymptotic quark state not observable except its
energy is zero. Unitarity indicates that the total probability of a definite
state of quark system to transit to any final state is exactly one. This talk
reviews some important conclusions/predictions from the basic properties like
unitarity of the combination model, as addressed by the title.
  We also in the Postscript section address the bottom quark energy loss. In
the discussions around the dinner table in the Rencontre, the author combined
the large transverse momentum J/Psi suppression and the contribution to J/Psi
by B decay in large transverse momentum, made the expectation that bottom quark
energy loss could be quite similar as light quark for b quark transverse
momentum enough larger than b quark mass. This refers to the physical picture
of the jet-medium interaction introduced in la Rencontre de l'annee derniere.

High Energy Physics - Phenomenology