but i shall once more call attention to the date , reminding you of both the current technological prowess and also the current rate of expansion of spacea rate that has been accelerating since the beginning of timeand simply assert , without any reasonable refutation available to you , that the bounded range of the permitted negotiation of my position could be sufficiently small so the net difference between it and the predicted increase in distance between myself and the observers due to metric expansion will be in favor of the latter while my reasonably certain velocity is c for our sufficiently small .