Since the Renaissance, artists have relied on rigorous laws of perspective to produce orderly, rational images of the world. In this engagement calendar, Robert Ausbourne violates every optical law in the book, presenting pictures that challenge us to imagine wildly unfamiliar forms. Opposite each of the twenty-seven optical illusions scattered throughout the year is a blank page for your own sketch (or for notes and lists). Ausbourne is the author of How to Understand, Enjoy, and Draw Optical Illusions (Pomegranate).Size: 6 x 8 1/4 in.; 112 pages; Wire-O bound softcover. Printed on recycled paper using soy-based inks.