‘People of the same trade seldom meet together, even for merriment and diversion, but the conversation ends in a conspiracy against the public or in some contrivance to raise prices”, Adam Smith, The Wealth of Nations, 1776
“But we cannot rely on custom or conscious alone to interpret and enforce the rules; we need an umpire.These then are the basic role of government in a free society; to provide a means where we can modify rules, to mediate differences among us on the meaning of rules, and to enforce compliance with the rules on the part of those few who otherwise would not play the game.”