1. You can't have Anarchistic societies without advanced technological infrastructure, large production surpluses, group communication etc.
2. You can't have Anarchistic societies with the advent of technology, only primitive Anarchism.
This story seems to help undermine a little of both :-)
I'm not sure about either of these arguments. The most robust arguments, as far as I can tell, are those relative to common goods (where you can't exclude access to goods/services) and externalities. The book tries to answer most of these questions. While I'm not entirely sold (at lest not yet) I recommend the book. It's not a rant about the Government, instead it goes quite in depth by proposing what anarco-institutions might look like and what kind of society those institutions are likely to produce by looking at historical cases (like Medieval Iceland) and parts of the current system.