A common criticism of libertarian philosophy is that it can’t handle collective action problems: That a totally voluntary society lacks the tools to build lighthouses, prevent over-fishing, or ensure we all get our vaccines.
In response, libertarians developed a branch economics dedicated to showing how collective action problems can be solved with voluntary cooperative arrangements. Elinor Ostrom’s work was particularly important for arguing that, under the right conditions, norms and civil society can evolve to govern the commons from the bottom up.
There are obviously limits to informal norms, however. For one, they are easy to undermine through appeals to rationalistic arguments. After all, norms exist to enforce cooperative arrangements that would otherwise be unstable. That suggests it is always possible for a sophist to jeopardize collective action by appealing to their peer’s individually rational, myopic reasons for action (“Just catch one more fish, no one will notice.”), and with each person who defects it becomes more tempting for…
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