Reflexión sobre el papel de masas

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Congress is controlled by the democrats. president yaeger, a republican, takes several actions that are opposed by the democrats in congress. first, the president introduces a new budget that cuts most of the government's social programs and gives tax breaks to the wealthy. next, president yaeger negotiates a trade treaty with a nation accused of human rights abuses. then, the president gives pardons to three republican senators who have been convicted of crimes.

Which scholars explained the roles of the public and private sectors by comparing it to maneuvering a boat?