Dear This is the first time you talk about the BBC The loop does not show the Check and Balance system It shows tendency of closed loop system toward its extremums It actually checks but unballances the system toward a specific political party Remember that all other sections of the article refers to Iranian constitution and use it as reference I am wondering how it is not allowed to use Iranian Constitution as a reference to show its own problems while at the same time other references are used I am happy to see that you confirms the existance of a circle and only are discussing about terminology Now see the following Persian links which belongs to one of the political parties inside Iran You can see that the section vicious circle is not OR I will add some other links if you would like