  De Broglie's original idea that a photon is composed of a
neutrino-antineutrino pair bound by some interaction was severely modified by
Jordan. Although Jordan addressed an important problem (photon statistics) that
de Broglie had not considered, his modifications may have been detrimental to
the development of a composite photon theory. His obsession with obtaining Bose
statistics for the composite photon made it easy for Pryce to prove his theory
untenable. Pryce also indicated that forming transversely-polarized photons
from neutrino-antineutrino pairs was impossible, but others have shown that
this is not a problem. Following Pryce, Berezinskii has proven that any
composite photon theory (using fermions) is impossible if one accepts five
assumptions. Thus, any successful composite theory must show which of
Berezinskii's assumptions is not valid. A method of forming composite particles
based on Fermi and Yang's model will be discussed. Such composite particles
have properties similar to conventional photons. However, unlike the situation
with conventional photon theory, Lorentz invariance can be satisfied without
the need for gauge invariance or introducing non-physical photons.
