``Gapless semiconductor model for quarks and leptons.''

It is an old idea of ours that a most general material 
with only translational symmetry but otherwise no symmetries
should generically have some small regions in quasi momentum
space where you actually ``see'' an approximate Weyl equation 
behavior. The Weyl equation is the relativistic equation for a 
(left handed) neutrino. This remark means that one could imagine 
that there were behind Standard Model of Higg energy physics  a 
very general chrystal model with very little symmetry. Even for the 
Yang Mill or electrodynamics types fields a similar philosophy 
is possible. There are though some problems with this 
solid state type model beyond  the Standard model, for which we have 
some remedy by means of homolumo gap effects. Now adays the kind 
of material we speculated is being found and very high conductivity 
achieved.