...having an estimate of the OLIR likewise seems crucial to making good policy in the next few years. The issue is one that,
in my view, the FOMC and the staff should be looking at carefully. ...Of course, the value of the OLIR would only be a rough
approximation to the “truth,” but one cannot avoid making such approximations in policymaking, whether implicitly or explicitly (Bernanke 2004a, p. 166).