  The problem of predictability, or "nature vs. nurture", in both ordered and
disordered Ising systems following a deep quench from infinite to zero
temperature is reviewed. Two questions are addressed. The first deals with the
nature of the final state: for an infinite system, does every spin flip
infinitely often, or does every spin flip only finitely many times, or do some
spins flip infinitely often and others finitely often? Once this question is
determined, the evolution of the system from its initial state can be studied
with attention to the issue of how much information contained in the final
state depends on that contained in the initial state, and how much depends on
the detailed history of the system. This problem has been addressed both
analytically and numerically in several papers, and their main methods,
results, and conclusions will be reviewed. The discussion closes with some open
problems that remain to be addressed.
