Why is libertarianism so infallible?

Libertarianism is the inclusion of every sapient being into the decision making process and all that logically follows from that. Utilitarianism is the objective of ensuring the most happiness for all sapient beings and all that logically follows from that. Sometimes they compliment each other, other times they contradict.

Discuss.

>>68
More of EVERYTHING IS SOCIALIST BECAUSE I'M RETARDED stuff. His isn't capable of holding much data, so he labels himself as LIBERTARYAN and anyone not anarchistic SOCIALIST, even though there are socialist and non-statist things, but that's too much for his meager mental capabilities.