http://spectrum.ieee.org/singularity, which is an update of his 1998
paper in the Journal of Transhumanism.
Hanson is the most fascinating of the "Virginia School" of libertarian /
public-choice economists associated with George Mason University. The
Virginia School is described at
http://www.mercatus.org/MediaDetails.aspx?id=22330 , and is compared to
the Austrian School at