What were Aristotle's reasons why statesmen should know all the different types of government?

so statesmen could be reelected
So statesmen could choose the government that would maximize their personal power.
So statesmen could make appropriate changes in government

So statesmen could make good laws

So statesmen could create the best possible government

So statesmen could choose the most appropriate government for a particular state.

(All of these were among Aristotle's reasons for knowing all the different types of government.)
My name is Geronimo Gabalini