How can parents, educators, business leaders and policy makers nurture creativity, prepare for inventiveness and stimulate innovation? One compelling answer, this book argues, lies in fostering the invention of imaginary worlds, a.k.a. worldplay. First emerging in middle childhood, this complex form of make-believe draws lifelong energy from the fruitful combustions of play, imagination and creativity. Unfortunately, trends in modern life conspire to break down the synergies of creative play with imaginary worlds. Unstructured playtime in childhood has all but disappeared. Invent-it-yourself...