Yes and no, a scale can help by telling if you are losing or gaining weight but the downside is that it can also discourage you. It can make you feel like you are not making any progress at all or it can make you feel like you have gained weight.
In animal farm, the leading pigs used trickery to control the rest of the animals. when questioned about their reasoning, the pigs quickly used persuasion to convince the animals that they were right.