Taking off from where the story ends, how likely do you think Orwell makes it that a new revolutionary leader could appear?
Orwell does a fairly good job making sure that the ending is structured so little change in the rule of Napoleon can emerge. Time has passed so that the old animals who remember the revolution have died off, and the new ones readily admit to the structure where pigs and dogs are the established leaders of the farm. When the animals peer through and see no difference between human and pig, there is a sense of resignation to their vision. There is no outrage. There is no demand for change. There is only acceptance of what reality is and how this vision will be sustainable as the Status Quo. A new revolutionary leader is unlikely due to this acquiesce to reality. At the same time, I believe that Napoleon has done a good job in ensuring that anyone who speaks of rebellion will experience his full wrath and extent of punishment, practically moving the animals towards silence out of self- preservation. Orwell establishes reality in a such a manner whereby no one either has the will to speak out or understands the need to do so. In this, it becomes highly unlikely that a new revolution will happen and a new leadership model will emerge. Orwell is deliberate in this ending, attempting to make the reader reflect on their own condition and how this is a state of affairs that must be avoided, even if it cannot be on the farm.