Why is libertarianism so infallible?

It is due to it being the application of political science. It does not permit failed policies to be continued fruitlessly year after year with idealistic fervour, it is next to impossible for anyone surrounded by fierce libertarian critics to continue clinging on to lies. It is a purely functional machine, lubricated with justice and fueled by free speech.

Libertarianism needs to be updated with a post 16th century economic model.  lp.org is apparently quite ignorant of the simple concept of a market externality.  Their platform would actually make sense if they endorsed Pigovian taxes for markets with significant externalities.  I guess that goes for all the parties!