  A new and radical scenario of the simple 2006 model of radiative neutrino
mass is proposed, where there is no seesaw mechanism, i.e. neutrino masses are
not inversely proportional to some large mass scale, contrary to the prevalent
theoretical thinking. The neutral singlet fermions in the loop have masses of
order 10 keV, the lightest of which is absolutely stable and the others are
very long-lived. All are components of warm dark matter, which is a possible
new paradigm for explaining the structure of the Universe at all scales.
