The book begins with familiar designs found all around and inside us (such as the 'trees' of
river basins human lungs blood and city traffic). It then shows how all flow systems are
driven by power from natural engines everywhere and how they are endlessly shaped because of
freedom. Finally Professor Bejan explains how people like everything else that moves on earth
are driven by power derived from our engines that consume fuel and food and that our movement
dissipates the power completely and changes constantly for greater access economies of scale
efficiency innovation and life. Written for wide audiences of all ages including readers
interested in science patterns in nature similarity and non-uniformity history and the
future and those just interested in having fun with ideas the book shows how many design
change concepts acquire a solid scientific footing and how they exist with the evolution of
nature society technology and science.
