You won't learn a new programming paradigm in a week. If Donald Rumsfeld were here he would say to you: There are known knowns. These are things we know that

You won't learn a new programming paradigm in a week. If Donald Rumsfeld were here he would say to you: There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know. The point of this book, obviously, is to turn people's unknown unknowns into known unknowns. Not for them to become competent programmers of 7 languages in 7 weeks.