"When performers make a slip of some kind, clearly exhibiting a discrepancy between the fostered impression and a disclosed reality, the audience may tactfully 'not see' the slip or readily accept the excuse that is offered for it. And at moments of crisis for the performers, the whole audience may come into tacit collusion with them in order to help them out...and with much delicacy help sustain the quite false impression that they have not absorbed the meaning of what has happened." -Erving Goffman
http://ralphriver.blogspot.com/2006/09/more-dylan-thefts.html
http://ralphriver.blogspot.com/2010/06/bob-dylan-carl-sandburg-and-problem.html