Satz explores how an agglomeration of constituents forming a system can demonstrate discordant behavior that does not correspond to expectations. The text features helpful graphic illustrations of important concepts. The exposition is elegant and clear. * N. Sadanand, CHOICE * Is the whole always equal to the sum of its parts? This slender book by Satz addresses this question with examples from different areas of science. * N. Sadanand, Central Connecticut State University * The exposition is clear, nice and simple. The arguments are elegantly parsed and as such are fun and entertaining. The author gets one to think. * Larry McLerran, University of Washington * One of the most delightful, charming, and thought-provoking books I have read in a long time. This field has been emerging for quite some time, but the universality of laws in vastly different systems as prime number distributions, frequencies of earthquakes, or word usage is becoming clear now. And we are just at the beginning of this revolution in the sciences - which may even be applicable to several social phenomena. * Dinesh K. Srivastava, National Institute of Advanced Studies, Bengaluru, India * Fascinating and easy to read for beginners, very clear and transparent, fun to read. * Christian Beck, Queen Mary University of London * The book is oriented to engage a diverse readership interested in new perspectives in physics, presenting an entertaining narrative that explores the enthralling concepts surrounding the field of complexity, concepts that have become integral in shaping our comprehension of the physical world. Particularly, undergraduate, and graduate physics students will benefit from reading it, as it provides a gateway to understanding how complexity principles apply to a multitude of physics problems, effectively opening a new realm of discovery. * Miguel AF Sanjuan, Contemporary Physics, Nov 2023 *