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Here we have a picture of a black chair, the type you would find belonging to a set of furniture to match the dining room table. When you first look at this chair you will probably think you are seeing it from the front. However if you focus your attention more on the vertical bars running down the back of it, it gives the illusion that you are looking at the chair from the back. So which way do you think this chair is really facing?
Gwen is right. The shadow gives it away.