Optical Illusions and Puzzles (Spiral: the Bonds of Reasoning) by PARRAGON BK SERVICE buy used Used & Rare price $6.71 new from$6.99 shop with confidence SPECIAL SHIPPING CONSIDERATIONS FOR USED & RARE ITEMS. Please see the special considerations for shipping Used & Rare items, including extended delivery times, possible import duties & taxes. Delivered in 3-5 weeks Format: Softcover Publisher: Parragon Books Condition: The following ISBNs are associated with this title: ISBN - 10:1445405156 ISBN - 13:9781445405155 Seller Comments: A tradition of southern quality and service. All books guaranteed at the Atlanta Book Company. From the Publisher This richly illustrated book presents a wide variety of the most popular optical illusions of all time, arranged in categories by type, along with clear explanations in simple language. An extensive assortment of seemingly confounding puzzles will test your powers of perception and cognition. Experience figure/ground confusion, reckon with visual consistency, and deal with the effects of optical distortions. Fight off the effects of camouflage, and locate hidden messages and treasures! Who says science can't be fun!14 cm x 22 cm 384 page spiral softcover.