The DARK MATTER should be called TRANSPARENT MATTER. I propose a 
baryonic solution. 14 milliard years since the big-bang are not 
sufficient for a baryonic solution. The introduction to THE PAPER 
repeats and details derivation of paradigm shift presented in 
IARD2012 that increase the time since CMB to 90 milliard years. 
The PAPER of IARD2018 shows fast production of He4 in quasars+AGNs
and fast dispersion by their jets. The PRESENTATION and the
PAPER explain in detail how this explains the DARK MATTER as the
TRANSPARENT MATTER, and consequently explain the resulting 
structure and EVOLUTION of galaxies, galaxy clusters, and 
the large CELL STRUCTURE of the universe, all not-yet-understood, 
and additional observations. It is not easy to understand, because 
the explanations involve rotation issues, and in particular the 
implications of the law of conservation of the angular momentum.