<Dt> 1 . Externality </Dt> <Dd> The defendant must have nothing to do with the event's happening . </Dd> <Dt> 2 . Unpredictability </Dt> <Dd> If the event could be foreseen, the defendant is obligated to have prepared for it . Being unprepared for a foreseeable event leaves the defendant culpable . This standard is very strictly applied: </Dd>

What is the term for the ability to overcome circumstances