  We give a pedagogical and concise presentation of dynamical mass generation
involving strongly-interacting mirror fermions. As a paradigm which has been
explicitly shown to predict correctly the weak scale and the weak angle and
thus addressing successfully the essence of the hierarchy problem of energy
scales (contrary to "supersymmetric" or "extra-dimension" models) and the
unification of fundamental forces, it might have already manifested indirectly
its validity experimentally, as first noted by the author in 1998, via the
bottom-quark forward-backward asymmetry and the related coupling parameter A_b.
After a decade during which the particle-physics community was frequently
misled by a particularly obscurantist interpretation of the L.E.P./S.L.C.
precision data, this approach emerges as a strong candidate for new physics
beyond the standard model of elementary particles to be thoroughly tested in
the forthcoming high-energy experiments.
