Another interesting article by Nick Szabo is here: <a href="http://unenumerated.blogspot.com/2006/02/irreducible-complexity-of-society.html" rel="nofollow">http://unenumerated.blogspot.com/2006/02/irreducible-complex...</a>, where he discusses proof-of-work (2006) and what he saw as the problem with it.<p>Actually, a compelling theory is that Nick Szabo (possibly in collaboration with others) is Satoshi Nakamoto: <a href="http://likeinamirror.wordpress.com/2013/12/01/satoshi-nakamoto-is-probably-nick-szabo/" rel="nofollow">http://likeinamirror.wordpress.com/2013/12/01/satoshi-nakamo...</a>.