66:8.3

From the arrival of Prince Caligastia, planetary civilization progressed in a fairly normal manner for almost three hundred thousand years. Aside from being a life-modification sphere and therefore subject to numerous irregularities and unusual episodes of evolutionary fluctuation, Urantia progressed very satisfactorily in its planetary career up to the times of the Lucifer rebellion and the concurrent Caligastia betrayal. All subsequent history has been definitely modified by this catastrophic blunder as well as by the later failure of Adam and Eve to fulfill their planetary mission.