“Radical libertarianism assumes that humans are
wired only to be selfish, when in fact cooperation is the height of human
evolution.”
Libertarianism does not assume people are wired
only to be selfish. Libertarianism is
simply the belief that the initial use of force is not permitted in society,
including government officials. If you
want to be selfless in a libertarian society, you are free to do so. So long as you act in a voluntary manner, you
are acting within a libertarianism framework.
You can have completely selfless societies acting within a libertarian
society such as a communist enclave or a group of monks.
“It assumes that societies are efficient
mechanisms requiring no rules or enforcers, when, in fact, they are fragile
ecosystems prone to collapse and easily overwhelmed by free-riders.”
There are rules in a libertarian society. The rules are imposed by the owners of
private property. If you don’t like the
rule set by the owner, you are free not to engage that owner in voluntary exchange. For example, the owner of a theater may have
a rule that says no cell phones allowed.
If you don’t like that rule, you can choose not to visit that
theater. It is wrong to say libertarian
societies have no rules.