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.

Too many assumptions are being made here. Absolute Libertarianism won't work, just like absolute communism, democracy, socialism or, who cares, theocracy won't work either. You simply can not trust the mass of sheeple or corporations to do what is right all the time. You can't trust the government to do what is right ever.

However, a larger part of it is the fundamental role of government. Is it to improve the lives of the people or to secure the freedoms of the individual? Leftists espouse the former, Libertarians the latter. More importantly, Libertarians seek limited government -- not the absence of government. When government gets involved, things tend to go to crap. As Jefferson said, "if the government decided when we should sow and when we should reap, we would soon want for bread."

On the economic side, Libertarianism has its problems, but so does Communism. This nation did survive a long, long time with limited government intervention. And there is a place for government regulation and intervention, such as matters which apply to the powers vested in Congress: roads, commerce, etc. Because those things do affect the whole, some government regulation is needed. What I reject is the notion that every aspect of life must be regulated, observed, taxed and subsidized by government.

But screw that. I'm not an economist (who'd have guessed?) My adherence to Libertarian philosophy is based on the desire for personal liberty. It is not the place of the government to say I can't smoke pot in my own house. Maybe I want to cook up a batch of 180 proof shine, for my own consumption. If I sell it and it kills somebody, I am at the least guilty of manslaughter; and should be punished accordingly. In my state it is illegal to buy, sell or produce pornography which shows penetration. Who the hell is it going to hurt if I watch Back Door Jackhammer Jesus XII?

Libertarianism is at its heart the idea that "if it harm none, do as thou will." The government should only step in when someone has been harmed (or, I'll concede, there is a good chance someone will be harmed, such as drunk drivers or open threats.)

As for me, "any man who lays his hands on my to govern me is a tyrant and a usurper; I declare him my enemy." -- Pierre Proudhon.