curprev00:2500:25, 3 October 2023 174.172.65.250talk 14,774 bytes−423 The link does not corroborate the citation for the 1831 usage. Further it would be strange if the phrase were used before it was invented by economists.undoTag: references removed
curprev14:4614:46, 16 April 2016 David John Abrahamtalkcontribs 13,603 bytes−277 Removed an edit that pointed readers to a commercial web page as a source. Said edit was incorrect as the source cited four, not three tests as noted in the deleted text. Deleted text referenced material not based on peer review or accepted methodology.undoTags: Visual editMobile editMobile web edit