Aristotle (384–322BC) was not only a philosopher but also a pioneering giant of political science. He observed and classified how city states of his time did their politics, identifying six regimes in all. The three “ideal” ones – where rulers would rule for the benefit of all citizens – were monarchy, aristocracy, and polity. Respectively, that meant rule by the one, the few, or the many. He called their real-life equivalents – where rulers ruled for their own benefit – tyranny, oligarchy, and democracy.For Aristotle, whether states were oligarchic or democratic was deeply ingrained in their ways of working – the politics of structure itself. He believed that cities that chose their office holders, jurors and judges by lottery were democratic and that those using elections were oligarchic – that’s Greek for government of, by, and for the few.