The Little Schemer is not just an introduction to functional programming, it is an exciting study of the very principles of computational thinking. The book guides the reader through the intricacies of recursive programming, presenting the material in a user-friendly tabular format ("question-answer"). This is an indispensable guide for those who strive not only to understand the code, but also to think in it and rebuild it, going beyond ordinary programming and plunging into a more abstract world of computing.