ue ▁influence ▁is ▁difficult . ▁In ▁Australia , ▁a ▁ch allen ger ▁must ▁show ▁that ▁the ▁free ▁will ▁of ▁the ▁test ator ▁has ▁been ▁over bor ne ▁by ▁words ▁and ▁actions ▁of ▁the ▁alleg ed ▁wrong ▁do er ( s ), ▁to ▁such ▁an ▁extent ▁that ▁the ▁dece ased ’ s ▁freedom ▁of ▁test ation ▁has ▁been ▁taken ▁away . ▁ ▁Ins ane ▁del usion ▁Ins ane ▁del usion ▁is ▁another ▁form ▁of ▁in cap acity ▁in ▁which ▁someone ▁executes ▁a ▁will ▁while ▁strongly ▁holding ▁a ▁" fixed ▁false ▁belief ▁without ▁hypothesis , ▁having ▁no ▁foundation ▁in ▁reality ." ▁Other ▁courts ▁have ▁expanded ▁on ▁this ▁concept ▁by ▁adding ▁that ▁the ▁fixed ▁false ▁belief ▁must ▁be ▁persist ently ▁ad her ed ▁to ▁against ▁all ▁evidence ▁and ▁reason , ▁and ▁the ▁ir r ational ▁belief ▁must ▁have ▁influenced ▁the ▁draft ing ▁or ▁prov isions ▁of ▁the ▁will . ▁▁ ▁In ▁Florida , ▁one ▁of ▁the ▁most - o ften ▁c ited ▁court ▁r ul ings ▁on ▁ins ane ▁del usion ▁is ▁from ▁ 2 0 0 6 . ▁In ▁this ▁case , ▁the ▁de ced ent ▁executed ▁a ▁new ▁will ▁in ▁ 2 0 0 5 ▁in ▁the ▁hospital ▁with ▁severe ▁pain ▁and ▁under ▁the ▁influence ▁of ▁a ▁strong ▁medic ation . ▁She ▁died ▁the ▁next ▁day . ▁The ▁new ▁will ▁dis in her ited ▁the ▁care t aker ▁and ▁left ▁the ▁de ced ent ' s ▁estate ▁to ▁several ▁char ities . ▁The ▁care t aker ▁assert ed ▁that ▁the ▁de ced ent ▁was