Next they should invent a sarcasm detector, that would be really useful.
Yeah... that would be reallllllly useful...
That's because most libertarians are selfish bastards at heart. They are not concerned with such collectivist notions as creating a sustainable free society.
No. Libertarians believe that if the people really want to create a sustainable free society it can be done without the government stepping in to do it. Give the society to the people to do whatever they want with it. Don't give it to the government to let them do whatever they claim to be the will of the people.
If you don't have time to do it right, where are you going to find the time to do it over?