I am under impression that all current climate models can't see farther than their nose of returning to «
global equillibrium» after perturbation in «forcing», any substantial excursions of state trajectories are dismissed as numerical errors, so the global glaciation - deglaciation episodes have no support in current global climate models.
Maybe simply because your current assumption of globally -
stable equillibrium failed to explain any of critical events in climate history?
In a science of nonlinear dynamics it means that the system is out
of equillibrium, in constant dynamics, so the climate components are continuously OUT OF BALANCE.
Paperback books will naturally experience a decline until they will reach
an equillibrium with the newer technologies.