"But if all of our Civilizations go down...." Eukonidor began to protest. "Study will show you, youth, that the general level of mind, and hence of strength, is rising," the fused Elders interrupted. "The trend is ever upward; each peak and valley being higher than its predecessor. When the indicated level has been reached—the level at which the efficient use of the Lens will become possible—we will not only allow ourselves to become known to them; we will engage them at every point." "One factor remains obscure." A Thinker broke the ensuing silence. "In this visualization I do not perceive anything to preclude the possibility that the Eddorians may at any time visualize us. Granted that the Elders of long ago did not merely visualize the Eddorians, but perceived them in time-space surve

