Considering the state of fixed income markets around the world, and Moody's threat to downgrade US debt, quite timely.
ETA: specifically on Treasuries, looks like Taleb reconsidered:
http://www.moneynews.com/StreetTalk/Nassim-Taleb-Shorting-Treasuries/2010/02/04/id/348993
Today's post, Risk-Free Bonds Aren't, was originally published on 22 June 2007. A summary (taken from the LW wiki):
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