Lesson 3 Rule: Changes in the past instantly affect the future.   Camellia bushes hug three sides of the Shady Oaks rest home as if to hold it up. When Barry walked up, he saw a sign "No Petting," and couldn't figure out if the black and white image on the triangular sign was of a dog, an old hunched man, or two teens making out in the back of a car. After climbing the sloped driveway, Barry found an elderly couple, a man with loose spirals of white hair trailing off the back of his head. Beside him sat a woman, whose fleshy eyelids appeared almost shut and whose legs were wound round by a grey plaid blanket.