The shortcomings of economics are not original error but uncorrected obsolescence. The obsolescence has occurred because what is convenient has become sacrosanct. Anyone who attacks such ideas must seem to be a trifle self-confident and even aggressive. The man who makes his entry by leaning against an infirm door gets an unjustified reputation for violence. Something is to be attributed to the poor state of the door.
―J. K. Galbraith, The Affluent Society