Phillip Keller (2014) in his Phys-L post "Goodhart's Law" wrote:
"A former student of mine pointed me at this (from Wikipedia): *Goodhart's law* is named after the banker who originated it, Charles Goodhart <http://en.wikipedia.org/wiki/Charles_Goodhart>. Its most popular formulation is: "When a measure becomes a target, it ceases to be a good measure. . . . . . . . . . . . "
And one must not forget the related laws::
Dukenfield's Law <http://bit.ly/bsRokM>: "If a thing is worth winning, it's worth cheating for."
Campbell's Law <http://bit.ly/hMsyUr>: "The more any quantitative social indicator is used for social decision making, the more subject it will be to corruption pressures and the more apt it will be to distort and corrupt the social processes it is intended to monitor."
REFERENCES [URLs shortened by <http://bit.ly/> and accessed on 06 Nov 2014.]
Campbell, D.T. 1976. "Assessing the impact of planned social change," in G. Lyons, ed. , "Social research and public policies: The Dartmouth/OECD Conference, " Chapter 1, pp. 3-45. Dartmouth College Public Affairs Center, p. 35; online as a 196 kB pdf at <http://bit.ly/hMsyUr>. See also Campbell (1979),
Campbell, D.T. 1979. "Assessing the impact of planned social change," in "Evaluation and Program Planning" Volume 2, Issue 1, an abstract is online at <http://bit.ly/aQ4iJU>. For a memoriam to the late Donald Campbell see <http://bit.ly/bxyGfR>: "He was the founder of the domain of 'evolutionary epistemology' <http://bit.ly/a9XGKV> (a label he created), in which he generalized Popper's falsificationist philosophy of science to knowledge processes at all biological, psychological and social levels." See also <http://en.wikipedia.org/wiki/Donald_T._Campbell>.
Chrystal, K.A. & P.D. Mizen. 2001. "Goodhart’s Law: Its Origins, Meaning and Implications for Monetary Policy," online as a 70 kB pdf at <http://bit.ly/1tsJfvI>.
Hake, R.R. 2010a. "Dukenfield's Law & Campbell's Law," online on the OPEN! AERA-L archives at <http://bit.ly/9FWI9n>. Post of 14 Aug 2010 20:52:11-0700 to AERA-L , EvalTalk, NetGold, & PhysLrnR.
Hake, R.R. 2010b. "Dukenfield's Law & Campbell's Law #2," online on the OPEN! AERA-L archives at <http://bit.ly/d3FrI8>. Post of 22 Aug 2010 15:31:31-0700 to AERA-L and Net-Gold. The abstract and link to the complete post were also transmitted to various discussion lists and are also on my blog "Hake'sEdStuff" at <http://bit.ly/f9Maey> with a provision for comments.
Keller, P. 2014. "Goodhart's Law" online on the OPEN Phys-L archives at <http://bit.ly/1wnYuse>. Phys-L post of 30 Oct 2014 16:17:54-0400.
Kleiman, M. 2010. "Dukenfield's Law of Incentive Management," The Atlantic, 13 August 2010; online at <http://bit.ly/bsRokM>.