'I feel that there is a world market for as many as five computers' [Thomas Watson, IBM corp., 1943] 'Where a calculator on the ENIAC is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in  the future by the year 2000, may have only 1,000 vacuum tubes and weigh only 1.5 tons' [Angesehener Mechaniker, März 1949]