What you see is not what you get. Imagine bats and birds that look like faces, macabre skulls that appear on anything white, three donkeys with only three ears among them, and walls that disappear. Nothing is at it seems, and first impressions are just that - impressions, not the truth.
Examine drawings, some of them from designs hundreds of years old, that fool the eye into believing a flat surface is three-dimensional, that coils are rolling from left to right across the page, and that white spaces are flashing at you - plus more. find out about closure, lines of perspective, the "Rubin Vase," and how such concepts and techniques can help you untangle these fascinating tricks of eye and mind.