For over two centuries, Japan's military government kept the country isolated. Then in 1868 a national transformation began, culminating with a period of growth after the Second World War that came to be known as the "economic miracle." This time on Japanology Plus, our theme is industrial heritage. Our guest is Osamu Kamei, the vice-director of Center of the History of Japanese Industrial Technology at the National Museum of Nature and Science. And in Plus One, Japan's silk heritage.