The short (and not so short) essays included in this collection were written by leading intellectuals of our day. All these texts answer the same question: what scientific concept can become a useful thinking tool not only for scientists, but for any of us? In other words, how can we learn to think more effectively about the world around us and about ourselves? Despite the fact that the book was written by scientists, specialists in the most advanced fields of knowledge, much in it can be useful to each of us in our ordinary everyday life...