For instance,  1  BIS Review 99/1999  Paul David, a Stanford University economist, notes that electric motors did not boost productivity growth appreciably until more than forty years after Edison installed the first dynamo in 1881.
Though a new technology typically will not be fully incorporated overnight, the speed of its adoption can be faster or slower depending on the institutional and other features of the economy. For information technology, the process of incorporation appears to be taking place at a considerably faster rate in the United States than in other parts of the industrialized world.