“What is the ansible?” “It’s what he’s calling an instantaneous communication device. He says if the temporalists—that’s you, of course—will just work out the time inertia equations, the engineers—that’s him—will be able to build the damned thing, test it, and thus incidentally prove the validity of the theory, within months or weeks.” “Engineers are themselves proof of the existence of causal reversibility. You see Reumere has his effect built before I have provided the cause.”
