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.

>>43
You're an interesting fellow, but I'm not quite convinced yet.
How about you prove that your style doesn't stem from ignorance and I back off?
But don't be too subtle.