...is that it can afford fools in its ranks.
A fool who doesn't believe in using power, in power, isn't far removed from a genius who doesn't believe in using power, in power.
Libertarianism doesn't need brilliant orators or ingenious authors. It doesn't hurt that it seems to attract both in number, but it doesn't -need- them.
Libertarianism requires nothing to succeed except its enemies. They make our case for us, for they -cannot- afford the fools in their ranks, and they have them in legion.