3D Art

is it art or its an illision.....or just the way you view it. Your eyes can clearly view things a different way for some. We can trick our own eyes to think something when its not. Maybe see something and something changes or colorless. Some people like to express it through a small game called Sidewalk Chalk and its alot of time and effort to finish a masterpiece. Like these guys http://www.oddee.com/item_97706.aspx..... Theres is alot of ways for illisions to happen and alot f ways to make art in the most simpliest ways. Sometimes our eyes like to play pranks on us and tshow us something differemt than others. Our senses is different by the way we view things.