This list is so good. In fact, even the new inventions are seen with the same viewpoint and some of them are considered totally a waste. But they are not. For instance, the launch of Chromebooks after laptops did not meet people's approval but now they are doing so well. Brands like Lenovo, Dell, Acer and HP have launched their powerful mediatek powered laptops and people of all ages buy them gladly. There is no end to innovation.