Almost all the animals had a very bad memory so they were not able to remember things of major signifigance. After a little while the pigs would mention the past and the animals would not remember what had happened so they would agree with the pigs. The the battle of cowshed, snowball was a very herioic animal in that battle but Neapolean said that that was not true that there memory had deceived them, that snowball was just trying to get them to trust him because he was in connection with Mr. Jones. Also the pigs had changed the commandments. When the animals saw the commandments when they have been changed the pigs convinced them that they were wrong. So even though some animals knew how to read they would not have remembered very clearly what the commandments really said.
The pigs where also very convinceing. They were alway able to get out of any situation. The best talker of all the pigs was Squaler. He was always able to convince that animals that what every they had done the do for the good of all the animals and not just for themselves. Just like when the pigs had taken the milk and apples for themselves, they said that they only took it was because they needed it and that if they did not have it they would not be able to help operate the farm, he also added that the pigs did not actually like the milk and apples but they had to eat it. They rest of the animals believed them because they did not know what else to think. The pigs where also able to convince them that they had not changed the commandments and that there memory had deceived them and that that is what it had always said. This tactic of convincing them really helped them a lot
in taking over the farm for without the
rest of the animals support the pigs would not have gotten control of the farm. Were the animals able to prevent the pigs from changing the seven commandments? The pigs were very cunning in twisting the commandments...