  We examine the dynamical behavior of matter coupled to gravity in the context
of a linear Klein-Gordon equation coupled to a Friedman-Robertson-Walker
metric. The resulting ordinary differential equations can be decoupled, the
effect of gravity being traced in rendering the equation for the scalar field
nonlinear. We obtain regular (in the massless case) and asymptotic (in the
massive case) solutions for the resulting matter field and discuss their
ensuing finite time blowup in the light of earlier findings. Finally, some
potentially interesting connections of these blowups with features of focusing
in the theory of nonlinear partial differential equations are outlined,
suggesting the potential relevance of a nonlinear theory of quantum cosmology.
