intend only to seek their own benefit

People who intend only to seek their own benefit are ‘led by an invisible hand to serve a public interest which was no part of’ their intention. I say that there is a reverse invisible hand: People who intend to serve only the public interest are led by an invisible hand to serve private interests which was no part of their intention. Therefore, there is an invisible hand in politics that operates in the opposite direction to the invisible hand in the market. In politics, individuals who seek to promote only the public good are led by an invisible hand to promote special interests that it was no part of their intention to promote.