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.