Earlier this week, I was reading this paper by Brown [of Brown and Bethe fame]. http://arxiv.org/abs/nucl-th/0504029 Title: Relation of Strangeness Nuggets to Strangeness Condensation and the Maximum Mass of Neutron Stars Authors: Gerald E. Brown, Chang-Hwan Lee, Mannque Rho It expands upon the equation of state that Smolin cites as a pillar of his CNS principle, and looks pretty solid. But reading between the lines, I see a more insidious result [for CNS], our universe favors the formation of neutron stars. I was daydreaming about this and the thought occured to me - when/why do stellar cores collapse? And this thought popped to mind: when the mass density of the iron core exceeds the Chandrasekhar limit. Somehow that made sense. It explains things like why neutron star masses cluster right around the Chandrasekhar limit.