First past the post is a kind of internal anarchy

If our only concern is international (external) politics then we can say that first past the post is adequate... in providing an effective government. The reason being that fptp provides a leader with which to negotiate. Proportional representation is able to do this also but fptp certainly achieves this. The problem might arise with fptp when we seek to resolve internal disputes. Because there are only two parties then if neither party is interested in representing your complaint it will be ignored. Equally if both parties hold your view (to the detriment of an ignored minority) then also fptp fails. If we want government to resolve internal disputes then fptp is very bad. Only a proportional system gives voice to the complaints of minorities. In a way we can think of fptp as being a kind of internal anarchy... in the same way that we do not expect the mayor of a town to be become heavily involved in the affairs of the population. We expect them to be an ambassador for the town from the viewpoint of external visitors but to play a diminished role internally. First past the post is like this. It is perfectly effective as far as external matters are concerned but almost absent as far as internal matters are concerned.