It's a book whose central idea is very clear and, I found, very interesting. It then grows as a tree to develop this idea into intricate branches, all very connected to the root though. The central idea rotates around the concept of antifragility (of course, you saw the title) which is the ability of certain systems to thrive from attacks and get strengthened by them, rather than be victims of it. The book gives plenty of examples and sometimes goes deep into history. A good and recommended read, I only found the (many) parts where the author criticises personalities, institutions, other ideas, a bit excessively bitter.