Libertarian problem-solvers

In an article entitled "A Libertarian Visits South America" comes the following bit of good news:

My trip to Brazil ended with a five-hour afternoon hike with Roy and Felipe down a steep subtropical trail (using ropes in one section!) to some beautiful waterfalls. It was amazing — in those five hours, we solved just about every problem facing the world today.

There you have it -- all problems have been solved! Next!