  We revisit the proposed theoretical model for a small but nonzero
cosmological constant which seems supported increasingly better by recent
observations. The model features two scalar fields which interact with each
other through a specifically chosen nonlinear potential. We find a very
sensitive dependence of the solutions of the scalar field equations on the
initial values. We discuss how the behavior is similar to and different from
those in well-known chaotic systems, coming to suggest an interesting new type
of the dissipative structure.
