"Breakfast Links: September 8, 2011"
— Krugman on gold.
— An even simpler model.
— Amazon cuts a sales tax deal with California.
— Estimating the ideology of the 2012 GOP contenders.
— The proliferation of mobile platforms.
— David Leonhardt fears a double dip.
— Ron Paul’s pivot to bi-metalism is a move toward the sensible center.
— Rick Perry doesn’t struggle with this.
— In Europe no political authority has the power or responsibility to resolve the crisis.
— Stiglitz on the recession.