  Agents affected by their own future states in a one-dimensional discrete
dynamical system (1-DDS) can replicate two-dimensional images. It is shown that
such replication requires a toroidal spacetime and three rules are needed to
calculate the number of iterations required for exact replication. It is argued
that retrocausal updation used by 1-DDS can replicate any n-dimensional digital
object. It is shown that the way iterations reach a final image are different
for randomly generated images and non-random, meaningful images. Two instances
of real-world events that seem to imply such retrocausal replication are
discussed.
