Yes, it is true. In the past, it is the human power only that is managing all kinds of works and providing employment generation in factories and business activities. As science and technology progressed, new tools and machines which can manipulate work done in many folds, need for manpower decreased. To reduce the cost to feed manpower by way of salaries, nowadays business people are completely dependent on modern technology. For example, till now to clean and wash cooking utensils and wash clothes, even middle-class people are depending on housemade servants. Now, these workers are demanding more salary per month, so now many people whom I know are buying automatic washing machines to wash clothes. Similarly, a dish wash machine which is not popular in India is now becoming popular that is available at a cost of Rs.20,000.