In what ways do the pigs use the other animals literacy and lack of intelligence to keep animals from rebelling against the pigs

The pigs justify their actions on the basis of their superiority; they are smart and need more nutrition than the other animals to fuel their brainpower. There is no scientific basis for the pigs’ claim—in fact, if anyone needs more food to fuel their labor, it is the manual laborers—but they can count on the animals’ being too ignorant to realize that. In this way, Orwell makes the point that totalitarianism need not be blatant in order to be operating. It can hide under the guise of the “greater good” as it did in the Soviet Union before the totalitarianism became obvious.