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.

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Science work with facts yes, and a scientific theory must be able to be disproven theoretically meaning that its basic framework must include the parameters where it can clearly be discarded as disproven. That god does not exist is impossible to proove. That libertarianism does not work is impossible to proove. This means both statements are not scientific and more opinions with no true answer rather than scientific theories.