Before condemning data mining one should distinguish between objective and biased data mining. The former is commendable. Even biased data mining is appropriate when used to illustrate and not to test hypotheses. In the context of testing, the problem with biased data mining arises not from the...

The widespread belief that one can read off the public's expectations of inflation from the yield differential between indexed and conventional bonds ignores the fact that indexed bonds are held largely by those who expect the most inflation. However, holding indexed bonds as a hedge against...