> No voting system is perfect (Arrow's impossibility theorem) Arrow's impossibility theorem only says that no _ranked_ voting system is perfect, so it doesn't

> No voting system is perfect (Arrow's impossibility theorem) Arrow's impossibility theorem only says that no _ranked_ voting system is perfect, so it doesn't apply to cardinal methods such as Approval or Score. > That they have some edge conditions that could be theoretically exploited belies that fact that plurality voting (ie, FPTP / one person one vote) is a complete train wreck for spoilers and favoring extreme voting. I agree, but I think the nature of the exploitation should still be considered. For IRV, we would be introducing a dependence on unauditable voting machines to tabulate votes, which would make it harder to verify the integrity of future elections.