Wow. I am a polyglot, love languages, and study how they evolve. I've read dozens of books about language formation and the impact of culture and history on human communication, but this is one of the best. If you do read it, get the audiobook so you can hear McWhorter pronounce the excellent examples of a wide sample of languages that convincingly make the case that there really is so much that is special about Black English, while at the same time making the case that it is just an ordinary language evolution. I learned a lot.