When anarchists want to point to working, stateless social orders, one the frequently point to is the great medieval trade fairs. Well, oops: "It finds that contract enforcement at the fairs did not take the form of private-order or corporative mechanisms, but was provided by public institutions."
"All of this means that while the government has been artificially propping up the economy and 'stimulating' it through artificial means, peoples’ perceptions of economic life have been transformed into that which was intended by the central planners: the economic crush is over, our government cured all the problems, things are great again, go back to your old ways. Rinse and repeat."
* -- I hope it is obvious that I am being facetious -- there is valuable information left in that book that is not overturned by these findings. But clearly, the regression theorem is kaput. That is simply not what happened. It turns out a priorism is not a good way to do history!