Editing Unintended consequences (section)

===John Locke===
The idea of ''unintended consequences'' dates back at least to [[John Locke]] who discussed the unintended consequences of [[interest rate]] [[regulation]] in his letter to Sir John Somers, Member of Parliament.<ref>John Locke, [http://oll.libertyfund.org/titles/763#lf0128-04_head_002''The Works of John Locke in Nine Volumes''], (London: Rivington, 1824 12th ed.). Vol. 4.</ref>