How can you have a history of portable computing and not say a single thing about LCDs? The innovation that contributed most to adoption of notebook computers was the TFT screens with wider viewing angle and better colors. The article talks about the CNC used to make the sleek computers of today. But it wasn't any deficiency of manufacturing that made old laptops look boxy. They had to build the frames to block as much light as possible from interfering with the display.