{"product_id":"pocket-puzzlers-optical-illusions-0049725049932","title":"Pocket Puzzlers: Optical Illusions","description":"\u003cdiv class=\"book-description\"\u003e\n\u003cp\u003e\u003cstrong\u003ePocket Puzzlers: Optical Illusions\u003c\/strong\u003e by Joyce, Katherine. paperback edition. ISBN: 0049725049932.\u003c\/p\u003e\n\u003cp\u003eSeeing shouldnt always be believing... It all depends on how you look at it--every one of these drawings has a built-in \"deception.\" For example, in this picture how many cubes are there: 7 or 8? Count again: if youre focusing on the black tops, youll come up with 8, but if your eye is on the white bottoms, youll find 7 cubes. Some images show two things in one, others confound your perception so you wont be able to judge size, and still more seem to sparkle and pulse. You wont be able to take your eyes off them! 96 pages, 86 b\/w illus., 4 x 5.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sterling","offers":[{"title":"Default Title","offer_id":45650485248053,"sku":"ByrdShop_0806949937","price":61.02,"currency_code":"USD","in_stock":false}],"url":"https:\/\/atxbooks.com\/products\/pocket-puzzlers-optical-illusions-0049725049932","provider":"ATX Books","version":"1.0","type":"link"}