It's an autobiography by Biz Stone, co-founder of Twitter, co-founder of Jelly. At the start, it talks about crazy risks he took. Some of which, in hindsight, still seem pretty risky… Some of which, though, show that he was good at figuring out the reasons behind some "rules" and figuring out some rules that might not apply anymore. His thoughts about altruism and its place in society are pretty interesting.