I like Feynman’s extraordinary ability to synthesise searingly hard subjects to a level that anyone with basic skills can understand. This book is no exception. There are a lot of valuable lessons - everything from basic interactions to the value of science. And I picked it up for that reason. As it turns out half the book is about the challenger explosion and a very insider account of the investigation that followed. It’s well worth it if you’re even tensely interested in engineering or space.