I never understood the ultimate answer. That was beyond me. It took the combined skills of three great civilizations far apart in time to frame that godlike concept in which the tangible universe itself was only a single factor.
And even then it was not enough. It took the Face of Ea — which I shall never be able to describe fully.
I saw it, though. I saw it...
Ch. 1 : Encounter In Rio - The Time Axis (1949)