This was an interesting look at how Japan gave up an entire form of technology in the 17th century. While Perrin is no expert on Japan, and his overall observations about technology are a little dated, he is a superb writer who makes his arguments effectively and with passion.
A very interesting short study of the use of firearms in Japan: why did they, after adopting them in the 16th century with great success, stop using them (a lot to do with aristocratic culture), and how (the Tokugawa shogunate managed to establish a single centralized manufactury and government mono...