It is remarkable that none of the great dictators of the twentieth century (Mussolini, Hitler, Stalin, Mao) ever succeeded in realizing their visions. It is not that the world resists planning altogether, but the outcome will always be something unanticipated.
The great dictators of the 20th century were, no doubt, immensely powerful, but their power consisted only in their ability to bring about gigantic unintended effects.