My grandparents have found an amazing thing in their bathroom floor porcelain tiles- hidden pictures. Almost like optical illusions, I've seen everything from bears, to foxes, to sheep, to people in these blue-ish tiles. They are from Turkey, and the pictures are very subtle - you have to look hard to see them. Why are they there ? What's the point? Any history?? Thank you! lol that's not what i mean - they are meant to be seen, but why ?? what does that mean - illumaniti ?