This is the old libertarian saw, stated by P.J. O’Rourke like this (only longer, better, and funnier): If your grandmother doesn’t pay her taxes, she’ll be fined. If she doesn’t pay her fine, she’ll eventually be put in jail. If she tries to escape from jail, she’ll be shot. So!: Anything that you agree the government should do, you should be willing to put a gun to your grandmother’s head and threaten to shoot her for. Something like that.
This is a pretty old libertarian saw (contrary to the folks who posted the video above, libertarianism doesn’t argue for a completely stateless society, just for a minimal state): the government should do the minimum amount necessary to keep a society functioning, and no more. This means enforcing minimal laws against harming others, and a small national defense system. Everything else, the argument goes, is better privatized. I’ve been a registered Libertarian since the day I registered to vote, so I’ve given these arguments some thought.
One day the libertarians may go off and create their dream society, maybe on a floating island. In the meantime, we have Somalia, which has been without a central government since 1991.
So here’s the solution, and it has more than a little to do with game theory. Stuff that the government does is not like forcing some one individual to contribute to something. There’s a whole range of things that, if we weren’t all contributing, it wouldn’t make sense for an individual to give any money towards. Let’s start with the Libertarian’s example of national defense. It makes sense to have a national defense system only if everyone contributes. But it ends up that there are lots of things that directly or indirectly help everyone in a society. And while there are ways that a lot of these things could be accomplished by groups of private individuals, it makes sense for the government to do them. Would you shoot your grandmother for the interstate highway system? Probably not. But the highways unquestionably help our society in ways that a privatly-funded and tolled highway system would not.
The welfare system, public education, food safety inspections, drone strikes in foreign countries, eviction of protesters from public spaces, public healthcare, air traffic control. You probably agree that some of these things are good, and that some are bad. That’s not the point, though. The point is that they’re all things that a central government is in a unique position to provide, and that arguments exist that they are a net benefit. Once we’ve agreed to create the structure of the government, we’re all in it together, and we all need to decide together what we think are appropriate roles for that government.
It’s not that we need a system to make George help Oliver. It’s that we’re all better off if there’s a system that helps all those that need help, not just those that can find someone willing to help them.