Arrow's Theorem only considers single-winner systems. But most politics is done by the Parliament, not the President. There is no need to use small, single-win

Arrow's Theorem only considers single-winner systems. But most politics is done by the Parliament, not the President. There is no need to use small, single-winner voting districts to choose the members of the Parliament. Make voting districts 5-10 times larger and use proportional voting. Arrow's Theorem is not valid for that kind of systems.