His really good book, published earlier, was "Fooled By Randomness." "Black Swan" is a title obviously chosen by the publisher to sell a popular book. I found it almost unreadable compared to "Fooled by Randomness" which I think one of the most important books of our time - I try to get all of my scientific colleagues to read it.
I'm not a scientist and I read it. I am smart enough to know that I didn't "get" everything.