> This started my whole story with Erlang, which still goes on today. Joe’s book was approachable, the same way he was. He could explain like no other what the principles of Erlang are, what led to its design, and the core approach to fault tolerance that it embodies. It’s one of the few language-specific books that is not content with getting you to write code, but lets you understand why you should write it that way. The language didn’t just have features because they were cool, it had features because they were needed for fault tolerance. What Joe told you applied anywhere else.