Such+jobs+as+weeding,+for+instance,+could+be+done+with+a+thoroughness+impossible+to+human+beings.

Q Park This shows the uselessness of the humans, who are supposed to represent the Tsars. The Tsars sure were extravagent, looking at the quote "Tsar Nicholas at the head of the nobility, owned eight different palaces and employed 15,000 servants", we can learn that the humans didn't use what the animals produced to productively, and used them for such luxury as alcohol, over-eating, and waste. Therefore, the humans(Tsars), has lost trust from the animals(workers) that they would do a good job, which resulted hatred of the animals to get rid of them from the farm.