I liked this bit:
I’ve always been interested in technologies that are widespread and a bit boring. A good example of this is the pager motor. It’s the component inside your phone that makes it vibrate. There are about 3 billion smartphones running right now, and if you think about every mobile phone that has been manufactured since about 2000, they all had pager motors in them, which means on Earth there must be 10 billion motors of this kind. They almost never burn out and are incredibly efficient. They’re amazingly well made pieces of technology.