Traveling to the US city of New York you have made a very large series of colorful pictures and now selects the same from them. Photo with the image of huge skyscrapers, abutting against the blue sky turned in duplicate, and you decide to get rid of him. Before you throw away or donate it to a photograph, a close look at small parts of objects with identical images and compare them mentally so as not to miss the smallest detail, from the very beginning that it is impossible to detect.
