  The apparent early thermalization of quark-gluon plasma produced at RHIC and
LHC has motivated a number of studies of strongly coupled ${\mathcal N}=4$
supersymmetric Yang-Mills theory using the AdS/CFT correspondence. Here we
present the results of numerical simulations of Bjorken flow aimed at
establishing typical features of the dynamics. This is done by evolving a large
number of far from equilibrium initial states well into the hydrodynamic
regime. The results strongly suggest that early thermalization is generic in
this theory, taking place at proper times around $0.6$ in units of inverse
local temperature. We also find that the scale which determines the rate of
hydrodynamic cooling is linearly correlated with the entropy of initial states
defined by the area of the apparent horizon in the dual geometry. Our results
also suggest that entropy production during the hydrodynamic stage of evolution
is not negligible despite the low value of $\eta/s$.
