It is useful to denote when ordered outcomes occur as a result of action but not of intention. Russ Roberts covers it well: http://www.econlib.org/library/Col

It is useful to denote when ordered outcomes occur as a result of action but not of intention. Russ Roberts covers it well: http://www.econlib.org/library/Columns/y2005/Robertsmarkets.html http://www.econlib.org/library/Columns/y2005/Robertsmarkets....