What social and industrial research has not sufficiently realised as yet is that... minor irrationalities of the average normal person are cumulative in their effect. They may not cause breakdown in the individual but they do cause breakdown in the industry.

Elton Mayo, Irrationalty and Revery, Journal of Personnel Research, March 1933, p.482; Cited in: Ionescu, G.G., & A.L. Negrusa. "Elton Mayo, an Enthusiastical Managerial Philosopher." Revista de Management Comparat International 14.5 (2013): 671.