Economics is haunted by more fallacies than any other study known to man. This is no accident. The inherent difficulties of the subject would be great enough in any case, but they are multiplied a thousand fold by a factor that is insignificant in, say, physics, mathematics or medicine—the special pleading of selfish interests. While every group has certain economic interests identical with those of all groups, every group has also … interests antagonistic to those of all other groups. While certain public policies would in the long run benefit everybody, other policies would benefit one group only at the expense of all other groups.

Henry Hazlitt (1946). Economics in One Lesson, p 3.