Use some imagination
Surely a more interesting use for this - particularly in historical studies - would be to map the progression of an historical event (skirmishes in a war, the movements of the Sarajevo assassin, the march of Garibaldi, etc) rather than the life of an individual, particularly if it is what that person DID, conceptually, which is important, more than where that person WAS at any given point in time?
Cute idea though.