▁Joseph ▁II ▁in ▁Ama de us ▁( a ▁film ▁which ▁As im ov ▁adm ired ), ▁although ▁he ▁is ▁not ▁very ▁similar ▁to ▁the ▁historical ▁Joseph ▁II . ▁ ▁Ar gu ably , ▁the ▁most ▁significant ▁event ▁of ▁Cle on ' s ▁rule ▁occurred ▁in ▁ 1 2 , 0 2 0 ▁G E , ▁when ▁the ▁young ▁math ematic ian ▁H ari ▁S eld on ▁came ▁to ▁Tr ant or ▁and ▁revealed ▁that ▁psych oh istory ▁was ▁a ▁theoretical ▁possibility . ▁ ▁Cle on ▁I ’ s ▁reign ▁represented ▁a ▁curious ▁interval ▁of ▁quiet ▁between ▁trouble d ▁times . ▁This ▁is ▁und ou bt edly ▁due ▁to ▁the ▁skills ▁of ▁his ▁Chief ▁of ▁Staff , ▁E to ▁Dem er zel . ▁Cle on ▁would ▁never ▁have ▁learned ▁of ▁this ▁development ▁by ▁his ▁own ▁efforts ; ▁ins ulated ▁from ▁the ▁Gal axy ▁and ▁conf ined ▁to ▁the ▁Imperial ▁Palace ' s ▁grounds , ▁he ▁re lied ▁upon ▁Dem er zel ▁to ▁conduct ▁the ▁Mach ia vel li an ▁man eu vers ▁required ▁to ▁keep ▁the ▁Empire ▁function ing . ▁Dem er zel ▁became ▁aware ▁that ▁S eld on ▁could ▁possibly ▁develop ▁a ▁mathematical ▁method ▁for ▁predict ing ▁future ▁history , ▁and ▁he ▁( ind irect ly ) ▁informed ▁the ▁Emperor , ▁who ▁took ▁an ▁immediate ▁interest ▁in ▁the ▁matter . ▁While ▁Cle on ▁was ▁content ▁to ▁use ▁S eld on ▁as ▁a ▁source ▁of ▁self - ful fill ing ▁prop he cies — a ▁tool ▁to ▁prevent ▁un rest — D emer zel