“As his body became more and more defenceless, so his means of offence became steadily more frightful.
With stone and bronze and iron and steel he had run the gamut of everything that could pierce and slash, and quite early in time he had learned how to strike down his victims from a distance. The spear, the bow, the gun and finally the guided missile had given him weapons of infinite range and all but infinite power. Without those weapons, often though he had used them against himself, Man would never have conquered his world.
Into them he had put his heart and soul, and for ages they had served him well. But now, as long as they existed, he was living on borrowed time.”
(from ‘2001: A Space Odyssey’, by Arthur C. Clarke)